Fine-tune your CVT performance with Prima 18x14mm CVT Roller Weights. Sold as a set of 6 black composite barrel rollers with gold brass center bushings. Changing roller weight shifts the CVT shift curve — lighter rollers favor low-end acceleration and hill climbing; heavier rollers raise top-end speed on open roads. Select your weight above.
Weight selection guide: Genuine Buddy 125 uses 11.5g stock; Blur uses 14g stock. Lighter than stock improves off-the-line response. Heavier than stock raises top speed. Heavier riders or stock engines benefit from lighter rollers; lighter riders or big bore builds can run heavier.
Fits Genuine Buddy 125, Buddy 150, Buddy 170i, Buddy 220i, and Blur 150. Also compatible with GY6-based 125/150/169cc CVT engines including the following engine codes: 157QMJ, 161QMK, 1P61QMK, BN161QMK-A, 152QMI, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, and other QMJ, QMK, and QMI variants. If your engine code contains "QM" or "FM" this roller size is likely compatible.