Prima Roller Weights 20mm x 12mm (6 rollers in a set) COMPATIBILITY: BMS – TBX 260 (uses 8 rollers) Diamo – Turista 300 (uses 8 rollers) Linhai – VOG260 (uses 8 rollers) Malaguti – Madison 125/250 Roketa – MC-54B, MC-62 (uses 8 rollers) Tank – 250DE-08 (uses 8 rollers) Xingyue – XY260T-4 (uses 8 rollers) Yamaha – Majesty 125 >2001, 250 <2001, Maxster 125, Zuma 125, Vino 125, Teos 125, X-Max 250 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 **