Prima 15x12 roller weight set for Minarelli 50cc 2-stroke 1PE40QMB engines (including all Yamaha-based 50cc horizontal 2T engines). 

Original Parts For Scooters SKU 169-121-3g

Light rollers are good for quick acceleration, stop and go riding and hills, but you lose top end speed. Heavy rollers will give you a higher top end speed (long roads) but you will loose low end acceleration.

If you’re a heavy person (and/or) if you have a stock motor you will want to lean towards the lighter rollers. If you are a light person (under 140lbs) or you have a big bore you will want heavier rollers.

Specifications:

• Roller Diameter: 15mm  
• Roller Width: 12mm
• Available Weights: 3g - 7g 

Compatibility: Minarelli 50cc 2-stroke 1PE40QMB engines (including all Yamaha-based 50cc horizontal 2T engines)

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.