4mm of aerospace-grade 7075 aluminum puts these burly rings right in the sweet spot: tough enough for DH racing and dirt jumping, light enough for XC and single speed. The extra millimetre of thickness plus I-beam construction makes them stiffer than 3mm rings.
- Reversible laser etched graphics.
|Ideal for||Mountain biking|
Bolt circle diameter
Bolt circle diameter (BCD): the diameter of an imaginary circle that intersects the centre of each chainring bolt.