Chain - 428 x 116 Links - Apollo Z20 Z40 Dirt Bikes 109901 Pulley ID: 17mm (0

Pulley ID: 17mm (0

Here is the link to the retainer with bolts:

Center hole diameter: 48mm (1

125cc 4-stroke

Chain - 428 x 116 Links - Apollo Z20 Z40 Dirt Bikes 109901 Pulley ID: 17mm (0428 Drive Chain with 116 Links This 428 drive chain has 116 links and fits the Apollo Z20 and Z40 dirt bikes. If you don't want to screw around with removing links, this is the chain for you. This chain may fit other makes and models too. Please check description and pictures before ordering. Drive chain specs: 116 links Inner width roller: 7. 94mm (5 16 in) Chain Pitch (distance from pin to pin): 12. 70mm (1 2 in) Roller diameter: 8. 5mm (0. 335 in)