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Using only the highest quality materials available, the M-7 is built to last.Exclusive use of a stainless steel spiral perforated core, designed further enhances the sound attenuation properties of the muffler, while still increasing the HP and torque of...

Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kitMOS2 (Teflon/Molybdenum) Coated Skirts A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include...

Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kitMOS2 (Teflon/Molybdenum) Coated Skirts A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include...

There's a reason the AIR4ORCE tunable intake system was named, 2012 Product of the Year, by Transworld Motocross magazine—because it works.The AIR4ORCE provides more horsepower by increasing the volume over a stock airboot and then allows you to tune the...

Stage 3 cam: single cam motor. Best suited for engines requiring more breathing capability. Uses stock valve springs, rockers, and auto decompression mechanism.

Stage 2 ITR: Dual cam engineIntake and exhaust cams sold separatelyExcellent midrange to top end gainsUses stock valve springs

Stage 2 ITR: Dual cam engineIntake and exhaust cams sold separatelyExcellent midrange to top end gainsUses stock valve springs

Stage 1: Dual cam engine.Intake and exhaust cams sold separately.No bottom-end loss with strong mid-range to top-end gains.Cam uses stock auto-decompression mechanism.Uses stock valve springs.

Stage 1: Dual cam engine.Intake and exhaust cams sold separately.No bottom-end loss with strong mid-range to top-end gains.Cam uses stock auto-decompression mechanism.Uses stock valve springs.

Set your ride apart from the rest with the ultimate look in race performanceLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect, leak-free fitSuper-tough, powder-coated...

Same as PROX 3.6333Affordable premium quality replacement connecting rodsHigh-tech crank and wrist bearingsAISI carburized crank pinSilver-coated crank pin bearingA.E. recommended phosphor bronze thrust washersForged from 8620 AISI steel, hardness-tested...

Quality materials mean increased longevity and continued performance. A critical aspect of any rebuild, gaskets are often given little thought. However, the right materials can make all the difference.We do all of the thinking, so you don't have to. Our...