AS3 CHAIN ADJUSTER REAR AXLE BLOCKS to fit GAS GAS EC 125 200 250 300 2001-2017. AS3 Performance Rear Axle Blocks for Gas Gas EC 125 200 250 300, EC 250 300 450 F. AS3 Performance rear axle blocks are CNC machined from billet aluminium for the perfect fit in the swing arm and around the rear wheel spindle.
