This 17 mm lock sprocket applies to (and is not limited to) 125cc engines. Lock sprocket is 4.2 cm long, 2.5cm wide, 0.2cm thick and the mounting holes are 3cm apart center to center. [More Info]

This 20mm lock sprocket applies to (and is not limited to) 125cc engines. Most commonly used for 125cc manual shift dirt bike engines. Applies to most 125cc kick start and electric start engines. [More Info]

Lock Sprocket Bolt - 2pcs [More Info]