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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.

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...

Psychic Cylinders and Cylinder Kits are available fom standard size to +4mm Big Bores. When needing to rebuild your engine or simply wanting to increase your engines performance and horse-power psychic has the answer. Choose the cylinder alone or a...

Psychic Cylinders and Cylinder Kits are available fom standard size to +4mm Big Bores. When needing to rebuild your engine or simply wanting to increase your engines performance and horse-power psychic has the answer. Choose the cylinder alone or a...