JT/JT 420HDR 12/48 Chain Kit (OEM ratio) reinforced — a drivetrain ready for daily use in urban environments. Made by JT Drive Chain, this kit combines a black/steel chain with a pitch of 420 and a standard steel sprocket, in an original ratio setup of 12/48. The HDR chain, of Racing quality, is equipped with XS-Ring seals to minimize lubricant loss and reduce wear on the links.
Designed for riders seeking durability and reliability on roads and city commutes, this kit offers a reinforced alternative while maintaining the original behavior of the sprocket and the crown.
- Brand: JT DRIVE CHAIN
- Type: Reinforced HDR Chain Kit
- Pitch: 420
- Seals: XS-Ring
- Color: Black/Steel
- Sprocket: Standard Steel
- Ratio: 12/48 (OEM)
- Quality: Racing
Regular installation and maintenance (correct tension, appropriate lubrication) will extend the life of the kit. Suitable for the following models:
- RIEJU SMX 50 (2002)
- RIEJU MRX 50 (2002)
- RIEJU SMX 50 (2001)
A technical and pragmatic choice to replace your final drive without altering the original behavior, while benefiting from a reinforced chain and high-performance seals to limit wear. Manufacturer reference: Not provided.