Dr. Pulley Over-Range Variator Kit: Yamaha 2T Minarelli

Maximum Drive: Dr. Pulley Over-Range Performance Variator Push your top speed and acceleration to the limit with the Dr. Pulley Over-Range Variator Kit . Designed for the serious enthusiast, this "Over-Range" system features an oversized 94mm pulley diameter and re-engineered ramp angles. This allows your drive belt to travel further than the factory variator permits, effectively giving your 2-stroke Minarelli engine a wider gear ratio for explosive take-offs and a significantly higher top-end cruising speed. Technical Performance Features Oversized 94mm Face: Larger diameter than stock variators, providing a greater surface area for the belt to travel higher, resulting in increased top-end velocity. Extended Ramp Geometry: Optimized for use with high-performance sliding weights, allowing for a smoother, more linear power band without the "dead spots" common in OEM units. Complete Tuning Kit: Includes the variator boss, backing plate with sliders, drive face, and precision spacers to ensure perfect alignment and belt tracking. High-Heat Dissipation: Constructed from a lightweight, high-strength alloy designed to maintain consistent friction levels and prevent belt slip during aggressive riding. Comprehensive Fitment Guide This 13mm spline variator is designed for 50cc 2-Stroke Minarelli (1PE40QMB/Jog) engines: Brand / Engine Compatible Model Series Yamaha Zuma 50 (Pre-2012), Jog 50, Vino 50 Adly / Hammerhead Fox 50, Jet 50, Muddy Bug 50 Crank Specs Fits 13mm Crankshaft / 17-Tooth Spline Technical Specifications Pulley Outer Diameter: 94mm Inner Diameter (Boss): 18mm Crankshaft Spline: 13mm (17-Tooth) Kit Includes: Variator, Drive Face, Back Plate, Sliders, and Spacers Mechanic's Note: This is an "Over-Range" kit, meaning it is physically larger than your stock variator. Installation Tip: Because of the 94mm diameter, ensure your Starter Bendix and crankcase have enough clearance; some minor material removal from the case may be required on specific clones. Pro Tip: To get the most out of this kit, pair it with Dr. Pulley Sliding Weights and a fresh Kevlar Drive Belt to handle the increased gear range! SKU: 1200-1111 Vendor: Dr. Pulley