JT Sprockets Rear OE Steel T45 #420 JTR255.45

Designed for smaller capacity bikes and mopeds, this 420 pitch sprocket provides a lightweight yet durable solution for your final drive. The 45-tooth sizing offers a slight adjustment in gearing to improve acceleration and low-end response.

• Specific heat-treatment process increases surface hardness to prevent hooking and tooth deformation.
• Lighter overall mass reduces unsprung weight for improved suspension response and handling.
• Precision engineering ensures the chain seats perfectly, reducing mechanical noise and friction losses.
• Tailored for machines utilizing a 420 pitch chain system.