Description
The Prima Roller Weight Tuning Kit (16×3, 3g to 14g) is the best way to tune the CVT transmission in your Genuine Buddy 50, Black Cat 50, Rattler 50, RoughHouse 50, Honda Ruckus and Zoomer, Vespa ET2 (pre-1998), Kymco People 50, or 139QMB GY6 bike.
Specifications:
- Includes 3 of each roller in sizes ranging from 3g to 14g, for a total of 36 weights.
- Combining 2 sets of rollers allows you to tune your engine with a large variance in weight. For example, by alternating 3x 10g rollers and 3x 11g rollers in the variator, you can get a 10.5g roller set.
- Lighter weights increase RPMs for a given road speed, while heavier weights lower RPMs for a given road speed.
- Tailor your tuning to match your engine setup and personal driving style.
*DANGER: Weights must be installed in a 120-degree pattern! If not, SEVERE ENGINE DAMAGE WILL RESULT!!!
Compatibility:
| Genuine Buddy 50 | Genuine Black Cat 50 |
| Genuine Rattler 50 | Genuine RoughHouse 50 |
| Honda Ruckus | Honda Zoomer |
| Vespa ET2 (pre-1998) | Kymco People 50 |
139QMB-based 50cc / 80cc engines with the following engine codes:
| 139QMA | 139QMB | 1P39QMB | 1P39QMA-2 |
| YN139QMB | JJ1P39QMB | 139FMA-2 | BD1P39QMB |
| BN139QMB | 147QMD | Other QMA models | Other QMB models |
About Prima: Prima is the industry leader in premium scooter accessories, service parts and scooterist protective apparel. Prima brand products are designed direct-fit for all popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, Royal Alloy and GY6 / QMB powered scooters.
Made in Taiwan
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