Dr. Pulley HiT Clutch for Minarelli / Yamaha 2T - 60°

Zero Slip, Maximum Torque: Dr. Pulley HiT Clutch System Eliminate transmission lag and maximize power delivery with the Dr. Pulley HiT (High Torque) Clutch . Unlike traditional centrifugal clutches that rely solely on spring tension, the HiT system utilizes a patented "pillow spring" mechanism. This design uses centrifugal force to lock the clutch shoes against the bell, virtually eliminating slippage and ensuring every bit of power from your Minarelli engine reaches the rear wheel. It is the definitive upgrade for high-compression big bore builds, racing ATVs, and performance buggies. Technical Performance Features Patented HiT Technology: Features an internal wedge mechanism that increases pressure on the clutch bell as RPMs rise, providing a positive lock-up that standard clutches cannot match. 60-Degree Pillow Springs: Optimized for high-performance 50cc and 70cc cylinders, ensuring the clutch engages precisely at the power band's sweet spot. Advanced Heat Management: The included high-ventilation clutch bell is engineered to dissipate heat rapidly, preventing glazing and "fading" during aggressive racing or off-road use. Fully Tunable: Comes with 3 sets of pillow springs and 6 sets of clutch springs, allowing you to fine-tune your engagement and "lock-up" speeds for your specific riding style. Comprehensive Fitment Guide This 105mm clutch and bell assembly is a direct performance upgrade for 50cc 2-Stroke Minarelli (1PE40QMB/Jog) engines: Brand / Engine Compatible Model Series Yamaha Zuma 50 (Pre-2012), Jog 50, Vino 50, CT 50 Minarelli Clones Adly, Hammerhead, Keeway, Vento (1PE40QMB) ATV / Buggy Polaris Scrambler 50, various 2T 50cc-90cc Chinese ATVs Note Recommended for modified or "Big Bore" cylinders. Technical Specifications Bell Inner Diameter: 105mm Bell Spline Count: 16 Splines Bell Height: 33mm Clutch Type: HiT (High Torque) with 60° Pillow Springs Mechanic's Note: This is the last clutch you will ever need to buy for your Jog engine. Tuning Tip: Start with the medium springs provided in the kit. If your bike "bogs" off the line, move to a stiffer clutch spring to raise the engagement RPM. Pro Tip: While you have the CVT open, inspect your Drive Belt ; a high-lockup clutch like this will put more stress on an old, worn belt, making it the perfect time for a fresh Kevlar Belt upgrade! SKU: 169-221 Vendor: Scooterworks USA, LLC