Parts Unlimited Sprocket - K22-3503B Yamaha Dirt Bikes 1999-2022 Koso North America 2:1 Boss Fat Cat is

2:1 Boss Fat Cat is a stepped header system at the head 1 5/8" to 1 3/4" to 1 7/8" at collector and and 2 1/2" where the muffler goes to the header

modern design with advanced features for touring riders

Lengths given may not be the exact OEM length

CNC-machined billet aluminum construction with black-anodized finish

Parts Unlimited Sprocket - K22-3503B Yamaha Dirt Bikes 1999-2022 Koso North America 2:1 Boss Fat Cat isFeatures All our front and rear sprockets are manufactured to OEM specs using high grade hardened steel for long life All match original equipment exactly and feature precision machined splines and teeth for a perfect fit Packaged individually in poly bags with our PART # and the OEM # clearly marked Lightweight rear sprockets available for some applications Specs Color Finish Natural Type Drive Units Each Chain Size 520 Mounting Position Rear Riding