Seller notes

Dr. Pulley 23x18 Sliding Roller Weights for 250cc water-cooled 172mm engines. These rollers work well with many Honda or Suzuki engines including Boreem (BMS), Kazuma, Lifan, Roketa MC13-250, Roketa MC54-250B, SUNL SL250-22,Tank Touring 250T-H & Tank Touring DE engines THIS LISTING IS FOR 28 GRAMS Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). Now the innovative Dr. Pulley Sliding Roller Weights slide...

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