Bando premium CVT drive belt 669x18x30 for short case 139QMB 50cc scooters with 10" wheels. GY6 Bintelli Wolf Tao JNEN. Made in Japan. SKU 106-111. Bando premium CVT drive belt 669x18x30 for short case 139QMB 50cc scooters with 10" wheels. GY6 Bintelli Wolf Tao JNEN. Made in Japan. SKU 106-111.
Bando premium CVT drive belt 669x18x30 for short case 139QMB 50cc scooters with 10" wheels. GY6 Bintelli Wolf Tao JNEN. Made in Japan. SKU 106-111.

BANDO USA, Inc

Bando Premium 669x18x30 CVT Drive Belt 139QMB Short Case

SKU 106-111
$26.00
Shipping calculated at checkout.
Description

Keep your automatic scooter shifting smoothly and efficiently with the premium Bando 669x18x30 High-Performance CVT Drive Belt. Manufactured in Japan to demanding OEM criteria, this continuous variable transmission belt is engineered specifically for 49cc/50cc 4-stroke QMB139 engines utilizing a short-case configuration with a 10-inch rear wheel layout.

Shop mechanics widely recognize Bando belts as the absolute gold standard for scooter transmissions. Constructed with high-modulus internal synthetic rubber compounds and high-tensile cords, this belt resists heat stretching and structural deformation under continuous high-RPM loads, delivering maximum power transfer from your front variator to the rear clutch pulley setup with zero rotational slip.

Product Features

  • Premium Japanese Manufacturing: Engineered by Bando to exact factory replacement standards for consistent geometry and long-term durability.
  • High-Tensile Cord Reinforcement: Minimizes longitudinal stretching and decay under high thermal loads within the CVT transmission case.

Technical Specifications

  • Belt Sizing Metric: 669-18-30
  • Total Outer Length: 669mm
  • Top Width Profile: 18mm
  • Drive Face Seating Angle: 30 Degrees
  • Total Belt Thickness: 8mm
  • SKU Reference: 106-111

Comprehensive Model Fitment Matrix

This 669mm CVT drive belt is a direct drop-in replacement across a massive family of 49cc/50cc 4-stroke import street scooters utilizing the standard short-case GY6 engine architecture:

Scooter Brand Verified Compatible Model Applications
Bintelli Breeze 50cc, Sprint 50cc
Wolf Brand Scooters Islander 50, Lucky 50, RX-50
Generic GY6 Platforms Fits various Chinese 139QMB / GY6 50cc 4-stroke scooters explicitly specifying a 669 length belt.
CRITICAL SHORT-CASE FITMENT NOTE: This transmission belt measures exactly 669mm. It is built exclusively for Short-Case 50cc GY6 configurations running a 10-inch rear wheel layout. If your 50cc scooter utilizes a 12-inch or 13-inch rear wheel, it features a Long-Case engine layout and requires a longer 729mm or 788mm belt instead. Please verify your stock belt sizing markings before completing your order.

Shop Mechanic's Tuning Advice: When installing a fresh CVT drive belt, always inspect your variator roller weights and rear clutch assembly pads for wear or glazing. To optimize performance and ensure maximum transmission belt longevity, we recommend thoroughly wiping down the pulley faces with a brake cleaner solvent to clear out old rubber dust and scaling deposits prior to final belt seating.


California Prop 65 Warning
Product Diagrams
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
Since 1989

Supplying parts and accessories for vintage and modern scooters since 1989 – Over Half a Million Served and Counting!

Comprehensive Resource

From wear-and-tear items like tires and oil filters to aftermarket parts from industry-leading brands.

Dealer Focused

With a committed team of dealer-focused sales reps and streamlined pricing and shipping processes, we are dedicated to supporting your business.

Innovative

Our team constantly strives to develop and source the best new products for your scooter.