- #415 Sprocket & Chains | Superlight /Racing Size

YUMINASHI #415 SUPERLIGHT RACING SPROCKET & CHAIN CONVERSION
Fits Honda MSX125 / Grom 125 (2013 – 2017)

Eliminate unnecessary parasitic horsepower loss with the Yuminashi #415 Superlight Racing Drive System. Stock #420 and #428 drive setups carry excess rotating mass that steals acceleration from small-displacement engines. Upgrading to a narrow-pitch #415 racing chain and sprocket system dramatically reduces rotational inertia, allowing your engine to rev faster and transfer more usable power directly to the rear wheel.

• Ultra-Low Drag: Narrower #415 pitch minimizes friction losses across the entire drive system.

• Instant Throttle Response: Lower rotating mass improves engine spin-up speed out of corners.

• Engineered for Competition: Built for track, drag, and performance-tuned 125cc to high-displacement Grom builds where every fraction of a horsepower counts.

Note: #415 chains require matching #415 front and rear sprockets. Do not mix with #420 or #428 drive components.