Carefully matched exhaust expansion chamber optimizes gas flow for enhanced low- and mid-range power delivery.

The crankcase design features a spacer-style reed valve intake for improved air/fuel flow.

High-flow airbox ensures excellent air filter performance and easy maintenance.

A 28mm Hitachi Astemo® Keihin flat-slide carburetor provides seamless throttle response.

Durable six-speed transmission features oversized gears to provide enhanced engagement and smoother shifts.

The 85cc two-stroke engine features Yamaha's Power Valve System (YPVS) for broad power across the rev range.