MOOSE RACING Rear Sprocket - 49 Tooth - Yamaha 1211-251-49-12 520 RXP Pro-MX Chain Rust-resistant nickel-plated side plates

Rust-resistant nickel-plated side plates

Others the kit can be retrofitted into the OEM mounting spot

Replacement cheek pad for Arai Corsair-X

Attach to existing mounting points for easy installation

Constructed internally from Aerospace grade Titanium alloys

MOOSE RACING Rear Sprocket - 49 Tooth - Yamaha 1211-251-49-12 520 RXP Pro-MX Chain Rust-resistant nickel-plated side platesThe 7075 T651 aluminum we use for these sprockets receives an extra tempering which reduces distortion and provides optimal thickness vs. typically thinner 7075 T6 sprockets 100% machined, no stamping or grinding Optimal tooth thickness results in maximum tooth and chain contact