Lightweight sprung type chain tensioner.
Replaces conventional derailleur gear mech.
Variable tension and position (can be used on suspension frames with varying chain length - or rigid frames.)
Superlight CNC alloy body, pivot bolt and sealed pulley.
Supplied with 2 springs to provide "pull up" or "push down" function.
Superlight CNC alloy body.
Sealed bearing CNC alloy pulley.
Steel no-jump guide cage.
Variable tension and direction.