Athena 04-05 Honda TRX 450 R 97mm 480cc Big Bore Cylinder Kit

This Athena Big Bore Cylinder Kit gives you everything you need to increase the displacement of your 2004-2005 Honda TRX 450 R to 480cc. The kit includes a 97mm cylinder, designed to replace your stock unit and boost performance. Athena has been developing aftermarket cylinder replacement parts for over a decade, with their R&D department in Italy handling the design and testing of each piece.

The cylinder itself is coated with motor-nicksil, a special nickel-silicon coating developed by Athena. This coating is applied to achieve a smooth surface finish and ensure optimal wear resistance, which is crucial for the longevity of a high-performance engine component. This updated design aims to improve the overall performance and durability of your ATV's engine.

This kit is a significant upgrade for riders looking to get more power out of their TRX 450 R. Please note that this kit is not CARB approved and cannot be shipped to California. It's always a good idea to consult your local regulations regarding emissions compliance for aftermarket engine modifications.