Upper front chain retention device to be used with single front chainrings - makes sure chain won’t derail.
The cage takes account of the changing chain line.
Great for use on BSX, dual or downhill bikes.
Fully adjustable, very rigid dual clamp fixing and easy to set up.
Tough and durable stainless steel construction - will not rust
3 Clamp sizes available:- 28.6,31.8,34.9mm