Horstman Grim Reaper XR50 Clutch- Smaller ... Lighter ... Faster  Horstman, the leader in automatic clutches is proud to introduce a purpose built race clutch for the Honda XR50. Fact, low horsepower engines benefit greatly when inertia is reduced. The Grim Reaper clutch lowers inertia significantly by reducing the size and weight of the clutch compared to the factory model.  This translates to quicker starts and faster acceleration every time you grab a handful of throttle and go for it!    Fully automatic  ….  no clutch lever or cable needed   Installs in minutes …. no machining or modification to engine needed   77% Lighter. 27 ounces vs  48 ounces ,   45% smaller    3.150” vs   4.580”  Higher internal ratio 16/54  vs  17/78  for more speed in each gear. Weighted cam action levers …… 20% greater clamping for positive lockup. Works on stock 50cc power through fully modified 125cc   Easy maintenance … remove 5 cap screws to disassemble. Adjustable stall speed ….. a must for the serious racer. CNC machined from billet alloy steel and aluminum. Cryogenic treatment ….lasts longer….transfers heat quicker.   Clutch includes 54T Spur Gear, hardware, special tools, and manual     XR50 and Honda are trademarks of Honda Corporation