Athena 280cc Big Bore Cylinder Kit Bolt on kit, no machining required Aluminum cylinder with nickel-carbide coating designed with wider water jackets Complete piston kit, Forged piston with molybdenum coating Complete top end gasket set Easy to follow step-by-step installation instructions Average power gains of 5hp can be seen in most models Note: Images are for reference only; Images may not show your specific cylinder kit.

The Akrapovic Racing and Evolution complete exhaust systems are the flagships of our product lines. They are designed for competition-oriented MX riders who demand maximum performance from their exhaust systems. With their production quality, engine performance improvements and modern Hexagonal muffler design they satisfy the requirements of all riders. The systems are designed for two markets; in the US they are available with an approved spark arrester, and for the EU and other non-US markets they come with a noise damper. New for 2008 is additional chamber that helps to reduce noise emission and provides better power and torque at low rpm range. simple mounting excellent upgrade in performance deep sound hexagonal shape muffler eye-catching product which significantly changes the appearance of the bike improved engine characteristics: more power and torque in comparison with the stock muffler and competing products high quality and exotic materials: combination of carbon-fiber and titanium precision workmanship choice of carbon-fiber or titanium muffler outer sleeve lower weight in comparison with stock muffler and competing products Click Here for Additional Exhaust Information

Complete system with titanium MegaBomb header and midpipe. Race proven reliability testing, high temp multi-layer packing material and exclusive repack maintenance indicator. Features: The lightest full system available Superior power and performance - horsepower improved throughout RPM range Features exclusive proprietary Chamber Core and MegaBomb technology Factory Forward Engineering centralizes mass, improves handling Carbon muffler with titanium endcaps, midpipe and MegaBomb header Made from premium quality American materials MegaBomb header effectively reduces sound output by as much as 1.5dB while providing the low end of a long header and the top end of a short header Performance tuning inserts and spark arrestor module available Meets AMA sound requirements on most models; inserts available for others Click Here for Additional Exhaust Information

Pro Circuit exhaust systems for four-stroke engines are the top choice of ATV riders today. The product of state-of-the-art technology and extensive real-world testing, the Pro Circuit four-stroke systems boost over-all performance with explosive bottom, mid-range and peak power. Because they're constructed to withstand even the most abusive conditions, these systems are sure to give you years of unrivaled performance off-road or on the track. Features: Inspired by the T-4, the Ti-4 system utilizes high-quality grade-two aerospace titanium to provide huge weight savings and unique highlights Extensively track- and dyno-tested Steel Allen head screws make repacking an easy task CNC-machined modular end-cap design provides tunable power, with effortless reshaping to the machine's powerband Top-quality construction assures long life Silencers include spark arrestors that can be removed for closed-course racing; silencer is easy to remove or clean, is completely re-buildable and resists burnout prone to other four-stroke systems Exclusive E-glass pillow packing Can be used with OEM stock or a Pro Circuit header Click Here for Additional Exhaust Information

Athena 480cc Big Bore Cylinder Kit Bolt on kit, no machining required Aluminum cylinder with nickel-carbide coating designed with wider water jackets Complete piston kit, Forged piston with molybdenum coating Complete top end gasket set Easy to follow step-by-step installation instructions Average power gains of 5hp can be seen in most models Compression ratios are as follows YZ/WR450F Kit has 12.4:1 TRX450R 04/05 Kit has 10.7:1 YFZ450 04-07 Kit has 12:1

Athena 290cc Big Bore Cylinder Kit Bolt on kit, no machining required Aluminum cylinder with nickel-carbide coating designed with wider water jackets Complete piston kit, Forged piston with molybdenum coating Complete top end gasket set Easy to follow step-by-step installation instructions Average power gains of 5hp can be seen in most models Compression ratios are as follows KX250F Kit has 12.8:1 RMZ250 04-06 Kit has 12.8:1 RMZ250 07 Kit has 12.6:1 YZ/WR250F Kit has 12.5:1 Note: Images are for reference only; Images may not show your specific cylinder kit.

Powerflow II 2 into 1 Exhaust The ultimate in performance pipes, the Powerflow II moves an extreme amount of exhaust gases Works great with stock engines all the way up to large displacement engines Constructed of high-grade steel with Samson's exclusive Quad Chrome finish for the best possible corrosion resistance Three-stepped header pipes flow into the high-tech collector and 4" muffler with a removable 2" baffle Removable full coverage heat shields Oxygen sensor ports accept OEM and aftermarket sensors Includes all necessrry mounting hardware Made in the U.S.A. Click Here for Additional Exhaust Information

Alpinestars Women's Stella Julie Leather One-Piece Suit Just for women, the Stella Julie Suit is constructed from 1.2 ? 1.4 mm full-grain leather for excellent abrasion resistance This Alpinestar one-piece suit is engineered for female fit Multiple stitched main-seam construction for maximum tear resistance Ergonomically placed accordion stretch panels for optimal fit and flexibility Strategically placed stretch panels to conform to the female physique Pre-curved arms for increased rider comfort Silicone injected details Removable mesh lining Removable CE certified GP protectors with injection-molded shell and dual density foam padding Engineered female fit Replaceable PU Sport sliders TPR and embroidered logos YKK semi-auto lock zippers Sport sliders Back protector compartment with a foam back pad (CE certified RC back protector available as accessory) Available in European numerical sizes; please consult size chart before ordering

Speed and Strength Men's "Twist of Fate" One-Piece Race Suit 1.2-1.4mm premium cowhide leather frame Multiple safety stitched main seams Engineered thermoplastic external shoulder protectors Plastic reinforced C.E. approved should and elbow protectors Anatomical race cut fit Aerodynamic race hump Preforated front torso Low restriction collar Ceramic knee sliders

Athena 430cc Big Bore Cylinder Kit Bolt on kit, no machining required Aluminum cylinder with nickel-carbide coating designed with wider water jackets Complete piston kit, Forged piston with molybdenum coating Complete top end gasket set Easy to follow step-by-step installation instructions Average power gains of 5hp can be seen in most models This Kit has 12.3:1 Compression

Features and Benefits 1.2-1.4mm premium cowhide leather frame Multiple safety stitched main seams Engineered thermoplastic external shoulder protectors Plastic reinforced CE approved shoulder and elbow protectors Anatomical race cut fit Aerodynamic race hump Perforated front torso Low restriction collar Ceramic knee sliders

Features and Benefits 1.2-1.4mm premium cowhide leather frame Multiple safety stitched main seams Engineered thermoplastic external shoulder protectors Plastic reinforced CE approved shoulder and elbow protectors Anatomical race cut fit Aerodynamic race hump Perforated front torso Low restriction collar Ceramic knee sliders