Bando 669-18.2-30 Kevlar CVT Drive Belt (QMB shortcase)
1P39QMB shortcase / Tire Size 3.50-10" Rim
Description: Bando Brand Premium Kevlar CVT Drive Belt size 669x18.2x30 is made in Japan, not China version. Its material used is Aramid aka “Kevlar” which is used in making bullet-proof vests. Aramid characteristics reduce belt stretching and stress that can adversely affect the quality of belt engraving performance while preserving long belt life. Recommend for heavier duty off-road application. Standard fit for 139QMB 50cc 4-stroke ATVs and Street Scooters with a 10-inch rear wheel shortcase engine.
Installation: Make sure variator drive face is seated properly and not get its teeth chewed by the Bendix: 1. Slack the belt by opening the CVT clutch gives belt slack to the variator side. 2. Then install the variator drive face while lifting the slack belt further away from the center boss if done properly should not see any splines between variator drive face slop-side and boss flat-side. Should be flushed together. 3. Then install existing variator fan, washer, and hand-tight nut. 4. Finally, apply blue Loctite, torque nut to 30-35ft lbs. For reassurance please consult your manufacturer variator torque specs.
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.
• Aramid Bullet Proof Vest Reinforced Material
• Length: 669mm (Loop 12.461 in.)
• Width: 18.2mm (0.717 in.)
• Height: 9mm (0.354 in.)
• Groove Angle: 30°
• Made in Japan
• Fit 10" Rear Wheel Shortcase Engine
• Fit QMB 49/50cc+
Supported Models: Naraku CVT Kit (Part# KIT.A.139QMB); 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:
• 0.20 pounds | 13.169” (L) x 0.717” (W) x 0.354” (H)