Controltech 2x9 chainrings £50

Off-road double chainset

BikeRadar score 4/5

Using a double chainset off-road instead of the normal triple makes sense with Controltech’s interesting ring sizes.

The 40t outer ring is smaller than anyone else’s (normally 42/44), ensuring low ratios and a high cadence for more mountainous areas.

Hard 7075 T6 alloy shows good wear, while a 94mm bolt circle diameter will fit any mountain bike compact double crank. Shifting is smooth and precise thanks to steel pins, machined ramps and profiled teeth.

It’s hard to criticise a component that simply does it’s job. We’ll know more about ring durability after further testing. 

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