Jenson USA

MRP Long Range Patrol chain retention system is a strong and durable system that is designed to be used with a double chainring system.
Features:
- CNC machined alloy boomerang
- Designed for use with two chainrings
- E-Type guide allows shimano derailleur to be mounted directly to the boomerang
- Max-tooth designations references the maximum size of the larger chainring
- Polycarbonate Lite bashguard features weight reducing relief sections
- Rollers and bashguard are color-matched
- Upper boomerang "fin" keep chain from falling to the inside of the frame
- Urethane rollers