Tooth Front Engine Sprocket for SDG 110cc 125cc Dirt Bike ATV

Front Black Rim Wheel CNC Hub for Honda XR50 CRF50 SDG. 420 11/12/13/14/15/16/17/18 Tooth Counter 17mm/20mm Shaft Front Engine Sprocket. 1 Set 420 Chain Engine Sprocket. Size: This Is For 420 Chain. The Shaft Size Is 17mm or 20mm.