Best Seller | 17T 428 17mm Chain / ch Front Sprocket Cog For 50/70/110/120cc Description: 428-17T Front Sprocket Cog Diameter of Centre Hole: Approx. 17mm/0.67 Diameter of Mounting Hole: Approx. 30mm/1.18 Total Diameter: 73mm/2.87 Fitment: for 50/70/110/125/150cc Dirt Bike ATV Quad Package Includes: 1 Piece Front Sprocket Cog more | | $12.64 FREE shipping go to store |