17mm Engine Sprocket Retainer Plate Sets for Chinese 4 Stroke 50cc 70cc 90cc 110cc 125cc 150cc 200cc 250cc Engine ATV Go Kart Go Cart 4 Wheeler Dune Buggy Quad Bike Dirt Bike Pit Bike Off Road Motorbike Motocross. This engine sprocket retainer plate sets include: One engine sprocket plate; two sprocket plate fixed screws. The inside diameter: 0.67"(17mm) Please be carefully check the goods appearance, size, shape and then compare your original goods before ordering, thank you.