Hammer Performance - for All Your Harley Davidson XL Sportster and Big Twin Performance Needs
Hammer Performance Horizontal Bar



Dyno Room and Results for Harley Davidson and Buell Performance Products and Services from HAMMER PERFORMANCE


New Harley Davidson and Buell Performance Products from HAMMER PERFORMANCE


Garage Sale Products from HAMMER PERFORMANCE


Harley Davidson and Buell Performance Photo Gallery


Pictures of Harley Davidson and Buell Performance Cylinder Heads


Pictures of Custom Air Hammer Air Cleaners








DYNO ROOM



HAMMER PERFORMANCE 103 horsepower 1200-1250 Sportster dyno sheeet


2015 XL1200 Sportster owned by Nick Clark

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "IMPACT" Head Porting Service on the original 1200 heads
HAMMER PERFORMANCE IMPACT 560 Cams HAMMER PERFORMANCE Air Hammer Air Cleaner (CRUSH model)
Patriot Defender Exhaust System
Tuned with DirectLink by Canton Cycle



HAMMER PERFORMANCE 133 horsepower XL883/90ci Sportster dyno sheet


2002 Sportster owned by Mat Hormell

HAMMER PERFORMANCE 90ci Kit
HAMMER PERFORMANCE BFH Porting Service on SE heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR48 Carburetor
Dyna 2000i ignition
Patriot Defender Exhaust System
XR1200 Crank Conversion



HAMMER PERFORMANCE 101 horsepower XL883/1250 Sportster dyno sheeet


2011 XL883 Sportster owned by Dwayne Buzzell

HAMMER PERFORMANCE 100+hp XL883/1250 Conversion Package, consisting of:



HAMMER PERFORMANCE 106 horsepower XL883/1250 Sportster dyno sheeet


2014 XL883 Sportster owned by Charles Osgood

HAMMER PERFORMANCE 100+hp XL883/1250 Conversion Package, consisting of:

Comments: Charles tested his 100+hp package with both the Patriot Defender and also the Vance & Hines Competition Series two into one (with standard baffle, not the "quiet" version). Thanks for the data Charles and congratulations on the great result!



HAMMER PERFORMANCE 102 horsepower XL883/1250 Sportster dyno sheeet


2008 XL883 Sportster owned by Tim Hopper

HAMMER PERFORMANCE 100+hp XL883/1250 Conversion Package, consisting of:



HAMMER PERFORMANCE 132 horsepower XL883/1275 Sportster dyno sheeet


2007 XL883 Sportster owned by HAMMER PERFORMANCE

HAMMER PERFORMANCE 120+hp XL883/1275 Conversion Package, consisting of:

Comments: this is the final result from the development of our 120+hp conversion package. This package raises the bar yet again for bolt-on Sportster performance! Although we got this result with prepared 883 heads, at this level it doesn't matter whether you start with 883 or 04+ 1200 head castings, the end result is totally equivalent. So the 120+ package, just like the 110+ package, can be applied to either an 883 or an 04+ 1200 and the package is identical either way. For 2003 and earlier 1200's, you'll need to replace your head castings to get to this level.



HAMMER PERFORMANCE 111 horsepower 1200-1250 Sportster dyno sheeet


2014 XL1200C Sportster owned by Richard Cooper

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the original 1200 heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Ported Intake Manifold & Throttle Body
RSD Turbine Air Cleaner
Patriot Defender Exhaust System
Tuned with TTS Mastertune



HAMMER PERFORMANCE 110 horsepower 1200-1250 Sportster dyno sheeet


2014 XL1200X Sportster owned by a Charlie's Harley-Davidson Customer

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the original 1200 heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner (CRUSH model)
HAMMER PERFORMANCE Ported Intake Manifold & Throttle Body
Thunderheader Exhaust System
Tuned with TTS Mastertune



HAMMER PERFORMANCE 104 horsepower XL1200 1250 conversion Sportster dyno sheeet


2008 XL1200 Sportster owned by Richard Rivera


HAMMER PERFORMANCE Bolt-On 1250 Kit (big fin version, 10.5:1)
HAMMER PERFORMANCE "IMPACT 560" Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner (CRUSH model)
Dynojet Powervision Tuner
XB/XR1200 Flywheel Assembly
Patriot Defender Exhaust System



HAMMER PERFORMANCE 123 horsepower XL1200 90 cubic inch Sportster dyno sheeet


2008 XL1200 Sportster owned by Tracey Harrison-Hill


HAMMER PERFORMANCE 90ci Kit
HAMMER PERFORMANCE "SLEDGE" Head Porting Service on a set of XL883 heads
HAMMER PERFORMANCE "IMPACT 560" Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner (CRUSH model)
HAMMER PERFORMANCE Porting of the Stock Intake Manifold & Throttle Body
Dynojet Powervision Tuner
D&D Bobcat Exhaust System
Comments: this was supposed to be a mild build! It exceeded everyone's expectations. Congrats Trace and hang on tight!



HAMMER PERFORMANCE 146.8 horsepower 883-90ci Sportster dyno sheeet


2000 XL883 Sportster owned by John Plaster

HAMMER PERFORMANCE 90 Cubic Inch Kit
HAMMER PERFORMANCE "SLEDGE" Head Porting Service on a set of Buell XB heads
HAMMER PERFORMANCE SLEDGE 660 Cams
Home Made Exhaust system
S&S D Carb and Manifold



HAMMER PERFORMANCE 112 horsepower XL883/1250 Sportster dyno sheeet


2007 XL883 Sportster owned by Joseph Fucci

HAMMER PERFORMANCE 110+hp XL883/1250 Conversion Package, consisting of:



HAMMER PERFORMANCE 112hp XL1200 Sportster Dyno Sheet


2006 XL1200 Sportster owned by Kelly Carter

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service
HAMMER PERFORMANCE "CRUSH 600" Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner (CRUSH model)
Mikuni HSR45 Carburetor on HAMMER Billet Intake Manifold
Daytona Twin-Tec TC88A Ignition
D&D Bobcat Exhaust System (2014 model) Comments: D&D revised their Bobcat exhaust for 2014. The new version has a massive reversion centered around 5800rpm. This limited the main jet that could be put into the bike, because the AFR was going so rich right there. A little more power on top is available if the exhaust reversion can be eliminated.



HAMMER PERFORMANCE 110.8 horsepower Harley Twin Cam Softail 98 cubic inch dyno sheeet


2002 Softail owned by John Woeck


HAMMER PERFORMANCE Bolt-on 98 Cubic Inch Kit
HAMMER PERFORMANCE "SMASH" Head Porting Service on 2006+ castings
S&S 585 Easy-Start Cams
Dynojet Powervision Tuner with Autotune Pro kit
SE Exhaust System



HAMMER PERFORMANCE 119 horsepower XL883/1250 Sportster dyno sheeet


2014 XL883N Sportster owned by Alex Hurt

HAMMER PERFORMANCE 110+hp XL883/1250 Conversion Package, consisting of:

XR1200 crank upgrade



HAMMER PERFORMANCE 118 horsepower XL883/1250 Sportster dyno sheeet


2007 XL883C Sportster owned by Rob Bullard

HAMMER PERFORMANCE 110+hp XL883/1250 Conversion Package, consisting of:

Comments: The best result we've seen from a bike equipped with the heavy solid rear wheel of the "C" model, congratulations Rob!



HAMMER PERFORMANCE 120 horsepower 90ci Sportster dyno sheeet


2008 XL883 Sportster owned by Hideki Kusunoki - Kusunoki Custom Works, Himeji, Japan

HAMMER PERFORMANCE/Axtell 88ci Kit
HAMMER PERFORMANCE "SLEDGE" Head Porting Service
HAMMER PERFORMANCE CRUSH 600 Cams
Comments: One of the fastest Sportsters in Japan for sure, congratulations Kusunoki-san!



HAMMER PERFORMANCE 103 horsepower XL883/1250 Sportster dyno sheeet


2005 XL883 Sportster owned by Jim Carli

HAMMER PERFORMANCE 100+hp XL883/1250 Conversion Package, consisting of:



HAMMER PERFORMANCE 103 horsepower 1250 Sportster dyno sheeet


2007 XL1200 Sportster owned by Matt Page

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service
HAMMER PERFORMANCE IMPACT 560 Cams
HAMMER PERFORMANCE Ported Intake Manifold & Throttle Body
HAMMER PERFORMANCE Air Hammer Air Cleaner (Crush model)
V&H Comp Series Two into One Exhaust
Dynojet Powervision
Comments: Matt used the Powervision map we provided, did a few autotune cycles, and rolled it on a dyno for three pulls. Not bad considering the limited tuning. Still a little lean on top, there's more power lurking in there!



HAMMER PERFORMANCE 135 horsepower 883-88ci Sportster dyno sheeet


2000 XL883 Sportster owned by John Plaster

HAMMER PERFORMANCE 88 Cubic Inch Kit
HAMMER PERFORMANCE "SLEDGE" Head Porting Service on a set of Buell XB heads
HAMMER PERFORMANCE SLEDGE 660 Cams
Home Made Exhaust system
S&S D Carb and Manifold



HAMMER PERFORMANCE 121-124 horsepower 883-1250 Sportster dyno sheeet


2007 XL883 Sportster owned by HAMMER PERFORMANCE

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "SLEDGE" Head Porting Service
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner (Sledge model)
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision
Comments: These are the results of our R&D efforts with SLEDGE head porting. The blue pull has "SLEDGE PLUS" EFI 1200 heads, which means they received some welding that allowed us to reshape the intake ports for better flow. It also has an HPI 55mm throttle body that we ported. The red pull is our standard SLEDGE head service on EFI 1200 heads with a ported factory throttle body & manifold. And finally, the green pull is a set of our standard SLEDGE ported EFI 883 heads, again with the ported factory throttle body & manifold. SLEDGE porting of your 883 heads is a very cost effective way to reach these upper levels: once your 883 heads SLEDGE ported, they're very bit as good as SLEDGE ported 1200 heads.



HAMMER PERFORMANCE 102 horsepower XL883 Sportster 1250 dyno sheet


2002 XL883 Sportster owned by Joe Schaffner

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "SMASH" Head Porting Service
HAMMER PERFORMANCE "IMPACT 560" Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner (Crush model)
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Bassani Road Rage Exhaust System



HAMMER PERFORMANCE 111 horsepower XR1200 Sportster 1250 dyno sheet


2009 XR1200 Sportster owned by Mort Gelberd

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Crush Head Porting Service
Red Shift 605/591 Cams
FreeSpirits Blackhorn breather
FMF Titanium/Supertrapp Hybrid (red) and Twin Motorcycles Torque Hammer (blue) Exhaust Systems
Comments: This dyno session was Mort's 5,000 mile check-up, and the bike is running at least as well as it did shortly after the build (see below)



HAMMER PERFORMANCE 110 horsepower XR1200/1250 Sportster dyno sheet


2010 XR1200 Sportster owned by Brian Kolis

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "SLEDGE" Head Porting Service
Red Shift 605/591 Cams
Twin Motorcycles Torque Hammer II exhaust system
Tuned with Dynojet Powervision by Neville Lush Racing



HAMMER PERFORMANCE 102 horsepower XL1200/1250 Sportster dyno sheet


2012 XL1200 Sportster owned by Stew Cohn

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service
HAMMER PERFORMANCE IMPACT 560 Cams
Patriot Defender Exhaust System
Zippers Thundermax ECM
Comments: They chopped it off too early Stew, it hasn't even thought about nosing over yet!



HAMMER PERFORMANCE 103 horsepower XL883/1250 Sportster dyno sheet


1995 XL883 Sportster owned by Chris Bulpitt

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the Buell XB heads
HAMMER PERFORMANCE IMPACT 560 Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR42 Carburetor
Rich Products Thunderheader Exhaust
Dyna 2000 Ignition
Comments: Chris's motor has also been upgraded with the latest and greatest XR1200/XB12 crank assembly via a new machining service that HAMMER PERFORMANCE is offering for 91-03 XL's. This much improved crank is lighter and stronger than his original crank, uses a 1.5" crank pin for more big end durability and resistance to spread, and has stronger connecting rods as well. It also costs less than his original crank. Contact us for more information on this upgrade.



HAMMER PERFORMANCE 102 horsepower XL883/1250 Sportster dyno sheet


2002 XL883 Sportster owned by Jonathan Lord

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE SMASH Head Porting Service on the original 883 heads
HAMMER PERFORMANCE IMPACT 560 Cams
Mikuni HSR42 Carburetor
SE Slip-ons, baffles removed
Daytona Twin-Tec 1005S-EX Ignition with Single Fire Coil



HAMMER PERFORMANCE 110 horsepower 1250 Sportster dyno sheeet

2003 XL1200 Sportster owned by Ken Kirby

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the Buell XB heads
HAMMER PERFORMANCE "IMPACT 560" cams
HAMMER PERFORMANCE "CRUSH" Air Hammer Air Cleaner
Mikuni HSR42 Carburetor
Patriot Defender Exhaust System
Daytona Twin Tec 1005 Ignition System



HAMMER PERFORMANCE 123 horsepower 883-1250 Sportster dyno sheeet

1998 XL883 Sportster owned by Terry Flynn

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the Buell XB heads
Screamin Eagle 575 Cams
HAMMER PERFORMANCE "SLEDGE" Air Hammer Air Cleaner
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Samson Caliber 2 into 1 Exhaust System
Daytona Twin Tec 1005 Ignition System
Comments: This is round two for Terry, see his first result below. A tweaking of the rev limiter got him even more, and another first place at the dealership dyno shootout. Congratulations Terry!



HAMMER PERFORMANCE 108 horsepower XL883/1250 Sportster dyno sheet


2012 XL883 Sportster owned by Adam Hunt

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE CRUSH Head Porting Service on 1200N heads
HAMMER PERFORMANCE CRUSH 600 Cams
Patriot Defender Exhaust System
Ported Throttle Body & Manifold
Tuned by Thundertech using SEPST



HAMMER PERFORMANCE 109 horsepower XL883/1250 Sportster dyno sheet


2010 XL883 Sportster owned by Kevin Fleming

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE SMASH Head Porting Service on the original 883 heads
HAMMER PERFORMANCE IMPACT 560 Cams
Patriot Defender Exhaust System
HPI 51mm Throttle Body & Manifold
Assembled and tuned by Route 65 Harley Davidson using TTS Mastertune



HAMMER PERFORMANCE 103 horsepower XL883/1250 Sportster dyno sheet


2013 XL883 Sportster owned by Kevin Taggart

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE SMASH Head Porting Service on the original 883 heads
Screamin Eagle 575 Cams
D&D Bobcat Exhaust with Concentric Baffle



HAMMER PERFORMANCE 120 horsepower XL883/1250 Sportster dyno sheet


1992 Sportster owned by Ryan Dhabalt

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Sledge Head Porting Service on XB heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Patriot Defender Exhaust System
Comments: This is a pump gas street motor with all bolt-on components. It's also rev 3 of Ryan's motor. Last year he "only" had 115hp. A few updates to his stuff, an excellent job of screwing it together, and a good dyno tune netted him the above chart. Congratulations Ryan!



HAMMER PERFORMANCE 102 horsepower 883-1250 Sportster dyno sheeet


2009 XL883 Iron Sportster owned by Wade Richards

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "SMASH" Head Porting Service
Screamin Eagle 575 Cams
RB Racing 2:1 exhaust
Zippers Thundermax Tuner



HAMMER PERFORMANCE 117 horsepower 883-1250 Sportster dyno sheeet


2007 XL883 Sportster owned by HAMMER PERFORMANCE

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service on a set of late model EFI 1200 heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Ported Intake Manifold & Throttle Body
HAMMER PERFORMANCE Air Hammer Air Cleaner (Sledge model)
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision



HAMMER PERFORMANCE 118 horsepower 883-1250 Sportster dyno sheeet


2000 XL883 Sportster owned by John Plaster

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "SLEDGE" Head Porting Service on a set of Buell XB heads
HAMMER PERFORMANCE SLEDGE 660 Cams
Patriot Defender Exhaust System (baffle butterfly open)
S&S G Carb and Manifold
Comments: The tach pickup on the dyno didn't much like John's ignition setup, so we overlaid two similar pulls to make the lines continuous.



HAMMER PERFORMANCE 110 horsepower 100-1250 Sportster dyno sheeet


2009 XL1200 Sportster owned by Jay Sutter

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the original 1200 heads
HAMMER PERFORMANCE Impact 560 Cams
HAMMER PERFORMANCE Ported Intake Manifold & throttle body
HAMMER PERFORMANCE Air Hammer Air Cleaner (Sledge model)
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision



HAMMER PERFORMANCE 108.1 horsepower XR1200 1250 Sportster dyno sheeet


2011 XR1200 Sportster owned by Art Hernon

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "CRUSH" Head Porting Service
Red Shift RS575 Cams
Twin Motorcycles Torque Hammer II exhaust system
Twin Motorcycles HPA Air box
Built and Tuned by Boz at Powerglides - an authorized HAMMER PERFORMANCE dealer



HAMMER PERFORMANCE 104.9 horsepower 1250 Sportster dyno sheeet


2006 XL1200 Sportster owned by John Helfer

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "CRUSH" Head Porting Service
HAMMER PERFORMANCE "CRUSH 600" Cams
HAMMER PERFORMANCE "SLEDGE" Air Hammer Air Cleaner
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Thunderheader exhaust system
Daytona Twin Tec TC88A Ignition System



HAMMER PERFORMANCE 110 horsepower 883-1250 Sportster dyno sheeet


1998 XL883 Sportster owned by Terry Flynn

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE "CRUSH" Head Porting Service on the Buell XB heads
Screamin Eagle 575 Cams
HAMMER PERFORMANCE "SLEDGE" Air Hammer Air Cleaner
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Samson Caliber 2 into 1 Exhaust System
Daytona Twin Tec 1005 Ignition System
Comments: Terry home-tuned his bike by seat-of-the pants. He then went to a dyno shootout at a dealer and entered. With no tuning on the dyno, he got this result within a handful of pulls. Not only did he win first place in his class, but the HD techs were so impressed that they gave him the "Technicians Choice Award", beating out other bikes with turbochargers and superchargers. I bet they had never seen a street driven, pump gas friendly, normally aspirated Sportster pull a number like that! Still climbing when it got into the limiter too. Congratulations and great job Terry!



HAMMER PERFORMANCE 103 horsepower 1200-1250 Sportster dyno sheet


2008 1200 Sportster owned by Harley Matson

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "CRUSH" Head Porting Service
HAMMER PERFORMANCE IMPACT 560 Cams
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision
Comments: The dyno broke halfway through the tune-up! Sorry about that Harley, we'll get you more!



HAMMER PERFORMANCE 108 horsepower 1200S-1250S Sportster dyno sheet


2000 1200S Sportster owned by Dave Cremeans

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE "SLEDGE" Head Porting Service on the original 1200S heads
HAMMER PERFORMANCE "CRUSH 600" Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR42 Carburetor
Supertrapp 2:1 Megaphone & Patriot Defender Exhaust Systems as shown
Dyna 2000i Ignition System



HAMMER PERFORMANCE 100 horsepower 883-1250 Sportster dyno sheet


2007 883 Sportster owned by Richard Taylor

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Smash Head Porting Service on the original 883 heads
HAMMER PERFORMANCE IMPACT 560 Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision



HAMMER PERFORMANCE 118 horsepower XL1200 Sportster dyno sheet


2006 XL1200 Sportster owned by Bob Thompson

HAMMER PERFORMANCE/Axtell 90ci Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Sledge Head Porting Service
HAMMER PERFORMANCE "CRUSH 600" Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR48 Carburetor
JIMS Powerglide II Lifters
S&S Roller Rocker Arms
Patriot Defender Exhaust System (baffle butterfly open)



HAMMER PERFORMANCE 106 horsepower XR1200 Sportster dyno sheet


2009 XR1200 Sportster owned by Aleksey Rozentuler

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Crush Head Porting Service
Red Shift 605/591 Cams
JIMS Powerglide II Lifters
S&S Roller Rocker Arms
Dynojet Power Commander 5 with Autotune
TwinMotorcycles High Performance HPA air box
V&H Black Widow Exhaust



HAMMER PERFORMANCE 103 horsepower 883-1250 Sportster dyno sheet


2007 883 Sportster owned by Tyler Woodard

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Smash Head Porting Service on the original 883 heads
HAMMER PERFORMANCE IMPACT 560 Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision
Comments: Tyler was the very first customer to receive our 100+hp conversion package based on 883 heads, as developed on our shop mule below. Great result, congratulations Tyler!



HAMMER PERFORMANCE 118 horsepower Twin Cam 98ci dyno sheet


2005 FLTRI owned by Dave Wilhdlm

HAMMER PERFORMANCE Bolt-on 98 cubic inch Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Sledge Head Porting Service
Wood TW68 Cams
JIMS Hydrosolid lifters
S&S Roller Rocker arms
D&D Bobcat Exhaust System
Comments: Dave's bike is pulling all this power through the itty bitty stock throttle body and manifold. New pieces are on order, watch for bigger numbers in Dave's future!



HAMMER PERFORMANCE 115 horsepower XL883/1250 Sportster dyno sheet


1992 Sportster owned by Ryan Dhabalt

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Sledge Head Porting Service on XB heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Patriot Defender Exhaust System
Comments: After Ryan got used to his 103hp motor (see below), he came to us and asked for more. We upgraded him to our latest innovative pistons and top-of-the-line head porting. Made a difference, congratulations Ryan! Also, check out this amazing video of Ryan in action on this bike.



HAMMER PERFORMANCE 115 horsepower XL883/1250 Sportster dyno sheet


2000 XL883 Sportster owned by John Plaster

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE Crush Head Porting Service on XB heads
HAMMER PERFORMANCE CRUSH 600 Cams
HAMMER PERFORMANCE Billet Intake Manifold
Mikuni HSR45 Carburetor
Patriot Defender Exhaust System
Comments: This is the second version of this motor for John, see below for the first version. If you line up against John at the track, be prepared to be looking at his tail light! Congratulations John!



HAMMER PERFORMANCE 107 horsepower XR1200 Sportster 1250 dyno sheet


2009 XR1200 Sportster owned by Mort Gelberd

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Crush Head Porting Service
Red Shift 605/591 Cams
FreeSpirits Blackhorn breather
FMF Titanium Exhaust



HAMMER PERFORMANCE 111 horsepower Sportster 1250 dyno sheet


2007 883 Sportster owned by HAMMER PERFORMANCE

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Smash Head Porting Service on the original 883 heads
HAMMER PERFORMANCE Impact 560 Cams
HAMMER PERFORMANCE Ported Intake Manifold
HAMMER PERFORMANCE Air Hammer Air Cleaner
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with Dynojet Powervision
Comments: An updated chart from the bike below, the differences being a) we swapped the pistons to our trick 30 Degree Reverse Dome versions and machined the chambers to match, b) we upgraded the valve springs to our premium PAC Alloy pieces so we could spin it higher, and c) we ported the intake manifold. As you can see, these changes added almost 5hp! It's still mechanically every bit as quiet as the stock bike, has good manners, and is smooth. This is not a radical package at all.



HAMMER PERFORMANCE 106 horsepower Sportster 1250 dyno sheet


2007 883 Sportster owned by HAMMER PERFORMANCE

HAMMER PERFORMANCE Bolt-on 1250 Kit with flat top pistons
HAMMER PERFORMANCE Smash Head Porting Service on the original 883 heads
HAMMER PERFORMANCE Impact 560 Cams
HAMMER PERFORMANCE Air Hammer Air Cleaner
Patriot Defender Exhaust System (baffle butterfly open)
Tuned with TTS Mastertune
Comments: Many people ask us if their 883 heads are viable power-producers when doing a conversion. This chart should answer that question! This is a very low cost package as it uses not only the original 883 heads but also the stock lifters, pushrods, rockers, valve springs, throttle body & manifold, coil, etc. It's a pump gas street motor with 10.5:1 compression with mild cams that are easy on the valvetrain. It's mechanically every bit as quiet as the stock bike and has great low speed manners and smoothness. But when you crank that throttle open, you better be hanging on!



Matt Matthews 107 horsepower Sportster 1250 dyno sheet


2000 Buell X1 owned by Matt Matthews

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Crush Head Porting Service
HAMMER PERFORMANCE Crush 600 Cams
Comments: Matt rolled his bike on a dyno at a bike rally just for kicks, before he had even tuned it, and it pulled this very impressive result. We fully expect he'll be north of 110hp after tuning. Congrats Matt!



Scott Evans


2004 1200C Sportster owned by Scott Evans

HAMMER PERFORMANCE Bolt-on 1250 Kit with 30 Degree Reverse Dome Pistons
HAMMER PERFORMANCE Crush Head Porting Service
HAMMER PERFORMANCE Crush 600 Cams
Samson Caliber 2 into 1 exhaust
Mikuni HSR45 Carburetor on HAMMER Billet Intake Manifold
Daytona Twin-Tec TC88A Ignition
Comments: Scott was one of the first to receive our new 30 degree reverse dome pistons and also our billet intake manifold. This is a very strong pump gas street motor, congrats Scott!



John Plaster


2000 Sportster owned by John Plaster

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE Crush Head Porting Service
HAMMER PERFORMANCE Crush 600 Cams
Drag pipes
S&S Super G carburetor
Dyna 2000i ignition module



Ryan Dhabalt


1992 Sportster owned by Ryan Dhabalt

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE Crush Head Porting Service
SE 575 Cams
Samson Caliber Exhaust
Mikuni HSR42 carburetor
Twin Tec ignition module



Dave Young


1999 Buell M2 owned by Dave Young

HAMMER /Axtell 88ci Kit
HAMMER PERFORMANCE Sledge Head Porting Service
Red Shift 723 Cams
Custom Exhaust
S&S Super D carburetor



Jason Woody


1997 Buell S1 owned by Jason Woody

HAMMER PERFORMANCE Bolt-on 1250 Kit
HAMMER PERFORMANCE Sledge Head Porting Service
HAMMER PERFORMANCE Crush 600 Cams
Stock S1 2" header with V&H SS2R muffler
Mikuni HSR45 carburetor
SE Selectable ignition module



Tim Jacobs


2005 Sportster XL1200C owned by Tim Jacobs

HAMMER PERFORMANCE/Axtell 90ci Kit
HAMMER PERFORMANCE Sledge Head Porting Service
Red Shift 585 Cams
Bassani Road Rage Short exhaust
Mikuni HSR45 carburetor
Twin Tec TC88A ignition



Dale Nillis


1999 Dyna Low Rider owned by Aaron Wilson

98 Cubic Inch Bolt-on Big Bore Kit
Hammer Performance Sledge Head Porting Service
RR615 cams
Supertrapp 2 into 1 Exhaust
Daytona Twin Tec TC88A Ignition



Dale Nillis


1999 Buell X1 owned by Dale Nillis

Hammer Performance/Axtell Cast Iron 88 Inch Kit
Hammer Performance Sledge Head Porting Service on Buell XB Heads
S&S 600 cams
Force Big Bore Exhaust
Dyno tuned using ECM Spy by Max at High Country Harley Davidson



Dana Schauer


2010 Sportster owned by Dana Schauer

Hammer Performance 1250 Kit
Hammer Performance Smash Head Porting Service on 2007 XL1200 Heads
SE .575 cams
Supertrapp Exhaust
Dyno tuned by Joe's Cycle Repair



Dave and Patty Spetman


1999 Buell X1 owned by Dave and Patty Spetman

Hammer Performance 1250 Kit
Hammer Performance Smash Head Porting Service (7mm option with PAC Alloy springs)
SE .536 cams
Force Exhaust
Dyno tuned using Directlink by Max at High Country Harley Davidson

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