A used MRP system 2 chain device.
4 bolt, BB mount. few marks and scratched but still works and hold the chain solid!
Never once lost the chain with this. I used a 40T chain ring with this.
£170 new ( http://www.winstanleysbikes.co.uk/produ ... Outer_Ring)#
£25
4 bolt, BB mount. few marks and scratched but still works and hold the chain solid!
Never once lost the chain with this. I used a 40T chain ring with this.
£170 new ( http://www.winstanleysbikes.co.uk/produ ... Outer_Ring)#
£25
