Big Bore Cylinder Kit.
Discover how to upgrade your bike with Athena's Extreme Big Bore Kit, which increases displacement, delivering a significant boost in power and torque across the entire power band. This kit is the ideal solution for riders who want to push their bike's performance beyond standard limits while maintaining the legendary handling and lightness of this motocross machine.
Enhance Your Performance.
The kit includes an aluminum alloy cylinder, a high-quality forged piston complete with pin and rings, and all necessary gaskets. This cylinder kit results from years of off-road and racing research and development, ensuring smooth and continuous power delivery suitable for all RPM ranges.
Electronic Innovation with GET Boost.
Included in the kit is the GET Boost electronic module, developed by Athena's GET division, which takes your bike's performance to the next level. GET is globally recognized for its collaborations with top off-road teams, including MXGP and AMA Supercross. With GET Boost, you can fully leverage the big bore kit's performance without needing to modify the original ECU or electrical system.
Easy Installation and Maximum Integration.
Installing the GET Boost is straightforward: simply disconnect the connectors from the primary injector and throttle body, and connect them to the GET auxiliary harness. The GET Boost module, pre-calibrated specifically for this cylinder kit, connects quickly and allows you to get the most out of your engine safely and reliably.
Cylinder Technical Specifications.
The cylinder is made from a high-silicon aluminum alloy with an integrated steel bore through Athena's exclusive co-fusion process. This process ensures a perfect bond between the aluminum and steel, improving heat transfer and preventing premature wear. The bore geometry is designed to ensure a perfect combustion seal, preventing pressure loss and fluid or gas leaks.
High-Performance Forged Piston.
The forged piston, crafted from aluminum alloy, combines strength and lightness. CNC machining ensures tight tolerances and precise geometries, with a molybdenum disulfide coating that reduces friction and noise. The aerospace-grade steel pin, coated with DLC, guarantees hardness and low friction for unparalleled durability and reliability.
High-Quality Gaskets.
The included gasket set is designed to provide optimal sealing with the new cylinder. The head gasket is an MLS (Multi-layer Steel) type, made from stainless steel and laser-cut with the latest technology, ensuring perfect and long-lasting adherence under all conditions.
Take Your Bike to the Next Level.
The Big Bore Kit with GET Boost is the ultimate choice for riders who want to maximize their bike's performance. Increased power, superior reliability, and a riding experience that will make you enjoy every moment on the track or off-road. Get ready to never want to get off your bike again!
Optimize your bike's performance with Athena's Extreme Big Bore Kit and discover a new world of power and excitement.
- 85 mm bore: the maximum increase ever.
- No crankcase machining needed.
- Racing Forged Piston with fully open boxed bridged design and anti-friction coating.
- Aluminum alloy cylinder with steel cylinder liner.
Notes: Race use ONLY product - NOT intended for street use. WARNING: The cylinder head and base gaskets contained in the kit are specifically developed for Athena cylinders kits. Whenever the cylinder kit is disassembled, replace the gaskets with the specific Athena spare gasket kit: DO NOT use O.E. replacement gaskets.
