16 x 13 NCY Roller Weights

This will fit most 50cc horizontal 2 stroke engine with 16X13 size rollers and 50cc 139QMB Gy6 engines. Roller weights are one of the most cost effective ways to get performance from your scooter fine tuning and tweaking.

Tuning Tips:
Light rollers are good for quick acceleration, stop and go riding and hills, but you loose 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