Item Type: Gear Box Clutch KitMaterial: Metal alloy + ceramicGear Box Ratio: 3:1Gear Box Teeth: 14TGear Box Chain Size: T8F chainDistance Between Mounting Holes of Gear Box: (Center hole to center hole) Approx. 70mm/2.76inClutch Diameter: Approx. 75mm/2.95inClutch Thickness: Approx. 17mm/0.67inCenter Hole Diameter: Approx. 15mm/0.59inApplication: All-new aftermarket replacement parts for refurbished original clutch drum housing replacement, providing strong transmission capacity and restoring performance to a brand new stateFitment: Suitable for 43cc 49cc mini PIT off-road motorcycle pocket mini four-wheel off-road vehicle pocket T8F chain practical accessories.Package List1 x Clutch Drum Housing Gear Box1 x Clutch 1Fitment: Clutch drum housing gear box is suitable for 47cc 49cc Mini Pocket Quad Dirt Bike ATV. 2High Quality Material: Gear box clutch kit is made of high quality metal alloy and ceramic material, high strength, sturdy and durable. 3Size: Clutch diameter is approx. 75mm/2.95in, thickness is approx. 17mm/0.67in, and the center hole diameter is approx. 15mm/0.59in. 4Original Standard: According to original standard, you can directly replace the old or broken kits, stable and reliable. 5Simple Installation: The installation is simple, no complicated tools, convenient for using, save your time and energy.