JT. 520HDR 12/47 122 Standard Rear Sprocket Chain kitAPRILIA 50 RS 50 REPLICA - 2004Ref : JTC01851A / 3070836

JT Chain Kit 420HDR12/47/122 — Standard Sprocket and Chainwheel

Designed for the restoration or regular maintenance of the transmission, this JT kit includes a 420HDR chain and a standard steel sprocket/chainwheel set. A practical option for urban riders: simple reliability, direct installation, and parts tailored for daily use on small displacements and lightweight road bikes.

• Chain: 420HDR, steel finish, 122 links — standard version suitable for original transmissions.
• Sprocket: standard sprocket compatible with the configuration indicated by the kit reference.
• Chainwheel: steel chainwheel, standard version for a precise fit with the 420HDR chain.
• Technical specifications: chain quality: standard; indicated weight: 0.74 kg / 100 links.

This kit is aimed at riders looking for a complete and easy-to-install solution to achieve a clean and quiet drive. Be sure to check the list of components and the number of links before installation to adapt the length and gearing to your motorcycle. Compatible with many urban models — among them: APRILIA RS 50 REPLICA (2004 - 50 cc) — but ensure engine/model compatibility before purchase.

Note: Manufacturer reference not provided. For durable installation, check tension, lubrication, and wear after the first few kilometers.