NCY 16x13mm roller weights, 5g–9g. Fits 139QMB/GY6 50–80cc: Genuine Buddy 50, Honda Ruckus, Yamaha Zuma, TaoTao & more. ISO 9001, made in Taiwan. NCY 16x13mm roller weights, 5g–9g. Fits 139QMB/GY6 50–80cc: Genuine Buddy 50, Honda Ruckus, Yamaha Zuma, TaoTao & more. ISO 9001, made in Taiwan.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go. NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go. NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go. NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go. NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY 16x13mm roller weights, 5g–9g. Fits 139QMB/GY6 50–80cc: Genuine Buddy 50, Honda Ruckus, Yamaha Zuma, TaoTao & more. ISO 9001, made in Taiwan.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.
NCY Rollers (16x13); QMB139, Tao Tao, CSC Go.

NCY

NCY Performance Roller Weights 16x13mm 139QMB & GY6 50-80cc

SKU 1200-1051 7G
$18.00
Shipping calculated at checkout.
Options: 7G
Description

Fine-tune your scooter's CVT transmission with NCY 16x13mm Roller Weights. Available in 5g through 9g, these precision rollers let you dial in the perfect balance between low-end torque and top-end speed — and replacing worn, flat-spotted rollers restores lost performance and improves fuel efficiency.

Key Features

  • Precision Tuning — 5g–9g options to find your CVT sweet spot between acceleration and top speed
  • Premium Durability — low-friction polymer sleeve with metal core, ISO 9001 certified, made in Taiwan
  • Performance Recovery — eliminates high-rev lag and restores top speed lost to worn factory weights
  • Sold as a set

Specifications

  • Dimensions: 16mm (diameter) × 13mm (width)
  • Available Weights: 5g, 6g, 7g, 8g, 9g
  • Material: Low-friction polymer sleeve with metal core
  • Origin: Made in Taiwan

Compatibility

Fits a wide range of 50cc–80cc scooters using the 139QMB / GY6 50cc engine platform:

Brand Compatible Models
Genuine Scooter Co. Buddy 50, RoughHouse 50, Rattler 50, Black Cat 50
Honda Ruckus 50, Metropolitan 50 (pre-2011), Elite 50, Dio (AF25, AF27, AF28)
Yamaha Zuma 50 (2-stroke), Vino 50, Jog 50
Chinese / Import All 139QMB / GY6 50cc–80cc engines (TaoTao, CSC Go, etc.)

Compatible engine codes: 139QMA, 139QMB, 1P39QMB, 1P39QMA, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, LJ139QMB, 147QMD (GY6 80cc)

Tuning Guide

  • Lighter than stock — crisper acceleration, better low-end pull
  • Same as stock — restored factory performance
  • Heavier than stock — higher top speed with reduced acceleration
Maintenance Tip: Inspect roller weights every 1,000 miles. Flat spots or a drop in top speed are signs it's time for a fresh set.

About NCY

NCY is the premier provider of aftermarket performance components for Honda, Yamaha, Genuine, Vespa, Piaggio, SYM, Lance, KYMCO, and GY6/QMB-powered scooters. ISO 9001 certified and made in Taiwan since 1997.

California Prop 65 Warning: www.p65warnings.ca.gov
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.
Options: 7G
Since 1989

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