Athena P400485100038 Big Bore Ø 105cc 53 mm cylinder kit

Unleash your Yamaha YZ 85´s full potential with the Athena P400485100038 Big Bore Cylinder Kit. This 105cc, 53mm kit offers a massive performance gain, boosting horsepower and torque across the entire RPM range. Engineered in Italy with a high-grade aluminum cylinder and Nickel-Carbide coating, it ensures exceptional durability, superior heat dissipation, and long-lasting reliability for demanding racing conditions. Enjoy a significant increase in low-end grunt and top-end pull with this easy, bolt-on upgrade. Transform your YZ 85 into a podium contender