Naraku 669-18-30 CVT Drive Belt (QMB shortcase)
1P39QMB shortcase / Tire Size 3.50-10" Rim
Description: Naraku Brand Premium CVT Drive Belt size 669x18x30 are made in Taiwan, not China version. Its material used is Nylon previously used in making bullet-proof vests. Nylon strong yet its flexible not harsh on aluminum driveface like "Kevlar" which are recommended for heavier duty off-road applications. Nylon makes it gentle on CVT recommended for everyday riding use. Standard fit for 139QMB 50cc 4-stroke ATVs and Street Scooters with 10-inch rear wheel shortcase engine.
NOTE: How tell if you have 139QMB longcase or shortcase? If the distance from variator nut to clutch bell nut is 8.75", then it takes a 669-CVT belt which makes it a shortcase. If the distance from variator nut to clutch bell nut is 10", then it takes a 729-CVT belt which makes it a longcase. For we can’t always tell by rim size alone, for example, if the 139QMB Scooter has a 10" rim it can be tire size 3.50-10 (use 669-CVT belt shortcase) or have a tire size 130/90-10 (use 729-CVT belt longcase).
Include the following one belt.
• Nylon Reinforced Material
• Length: 669mm (Loop 12.461 in.)
• Width: 18.2mm (0.717 in.)
• Height: 9mm (0.354 in.)
• Groove Angle: 30°
• Made in Taiwan
• Fit 10" Rear Wheel Shortcase Engine
• Fit QMB 49/50cc+
Supported Models: GY6 139QMB 49cc-50cc engines, Buddy50, Filly 50, Kymco, QLink, RoughHouse, SYM, TaoTao, Bintelli Beast 50cc, Bintelli Bolt 50cc, Bintelli Scorch, Wolf Blaze, Wolf CF-50, Wolf M1, Wolf R1, Wolf V50, Wolf W1
Item Weight & Product Dimensions:
• 0.206 pounds | 13.169” (L) x 0.717” (W) x 0.354” (H)