Dr. Pulley HiT Clutch for Minarelli / Yamaha 2T - 50°

Race-Ready Engagement: Dr. Pulley HiT Clutch (50 ° Version)

Eliminate transmission lag and maximize power delivery with the Dr. Pulley HiT (High Torque) Clutch. This 50-degree version is specifically engineered for racing applications and highly modified 2-stroke Minarelli engines. By utilizing a patented internal wedge mechanism, the HiT system locks the clutch shoes against the bell as RPMs rise, ensuring zero slippage and instant power transfer that traditional centrifugal clutches simply cannot achieve.

Technical Performance Features

• 50-Degree Pillow Springs: Specifically tuned for high-revving engines, allowing the clutch to stay disengaged until the engine reaches its peak power band for explosive "hole-shot" starts.
• Patented HiT Lock-Up: Features an internal wedge that increases pressure on the bell under load, preventing the "clutch fade" and glazing common in high-heat racing scenarios.
• Precision High-Flow Bell: The included 105mm clutch bell is balanced for high-RPM stability and features oversized cooling vents to maintain consistent friction levels.
• Pro-Tuning Kit: Includes 3 sets of pillow springs and 6 sets of clutch springs, giving you the ability to customize engagement to match your specific exhaust and cylinder porting.

Comprehensive Fitment Guide

This 105mm performance assembly is a direct fit for 50cc 2-Stroke Minarelli (1PE40QMB/Jog) engines used in scooters and high-performance ATVs:

Technical Specifications

• Bell Inner Diameter: 105mm
• Spline Count: 16 Splines (Standard Minarelli)
• Pillow Spring Angle: 50 Degrees (High-RPM Engagement)
• Components: HiT Clutch, Vented Bell, Multiple Tuning Spring Sets

Mechanic's Note: The 50-degree HiT clutch is a serious piece of racing hardware. Performance parts are not covered by warranty.

Setup Tip: This version is intended for engines that need to "scream" before moving; if your bike is stock or has a mild "Street" kit, you may prefer the 60-degree version for smoother city riding.

Pro Tip: When installing, ensure your Clutch Nut is torqued to factory specs

SKU: 169-220