Bando 743-20-30 CVT Drive Belt | Short-Case GY6 Genuine Buddy

Restore smooth power transmission and eliminate belt slip with the premium Bando 743-20-30 CVT Drive Belt. Manufactured in Japan by the world's most trusted powersports belt supplier, this OEM-grade belt handles intense heat, resists cracking, and minimizes stretch under heavy engine loads—serving as the absolute gold standard for short-case GY6 and Genuine Buddy drivetrain systems.

Key Features

• Made in Japan Quality: Produced to strict factory tolerances by Bando, the premium OEM supplier trusted by Honda, Yamaha, and Kymco.
• High-Heat Elastomer Matrix: Advanced rubber compound formulation prevents premature glazing, cracking, and structural failure under intense CVT operating temperatures.
• High-Tensile Cord Reinforcement: Minimizes belt stretch to lock in a stable shifting curve, ensuring consistent top-end power delivery over the lifespan of the belt.

Technical Specifications

• Length: 743mm
• Top width: 20mm
• Groove angle: 30°
• Application: short-case GY6 125cc / 150cc / 170cc CVT with 10" rear wheels
• Weight: 0.35 lbs
• MPN: 743-20-30-9.5
• Made in Japan by Bando

Vehicle & Engine Compatibility

The 743-20-30 footprint is engineered exclusively for short-case mid-displacement platforms running small-wheel configurations. Review verified fitments below:

⚠ CRITICAL FITMENT CHECK: This belt is strictly for short-case engines with a 10-inch rear wheel. If your 125cc/150cc scooter or vehicle is equipped with a 12-inch or 13-inch rear wheel, you have a long-case configuration and require a longer belt (typically an 835-20-30 or 842-20-30). This belt will not fit standard 50cc (139QMB) setups. Always verify the size stamped on your old belt before ordering.

Mechanic's Installation Tip: When installing a new CVT belt, meticulously inspect your variator sliders, roller weights, and clutch pulleys for wear. Use an aerosol brake cleaner to thoroughly clear out all old, abrasive belt dust and debris from the transmission housing cavity. Never use screwdrivers, tire irons, or pry bars to force a new belt over the pulley faces, as this will tear the internal high-tensile reinforcement cords. Instead, compress the rear torque driver sheave entirely by hand against the spring to create the slack needed to slide the belt onto the boss smoothly and safely.

California Prop 65 Warning: www.p65warnings.ca.gov

• Bando OEM-grade 743-20-30 CVT belt — made in Japan, trusted by Honda/Yamaha/Kymco
• High-heat compound — resists glazing, cracking, and slip under CVT temperatures
• High-tensile reinforcement cords — minimal stretch, stable shifting curve
• Short-case specific — 743mm for compact GY6 125cc–170cc CVT with 10" rear wheels
• Check belt size stamps before ordering — 12"/13" wheel vehicles need 835-20-30 or 842-20-30

Length: 743mm | Top Width: 20mm | Groove Angle: 30° | Application: Short-Case GY6 125-170cc / 10" Rear Wheel | Engine Codes: 157QMJ / 152QMI / 139QMB | Weight: 0.35 lbs | MPN: 743-20-30-9.5 | Origin: Japan | SKU: 106-125

Genuine Buddy 125/150/170i / Psycho 125 / Black Jack 125 | TaoTao ATM50-A1 / VIP Future Champion 50 | Lance GTR 50 / Charming 50 / Duke 50 | Roketa Maui MC-08-50 / Bahama MC-07-50 | SUNL SL50QT-7/SL50QT-2 | Tank Sports Urban 50 / Sporty 50 | Short-case GY6 CVT go-karts and ATVs