Very lightweight chainring aluminum for mounting on spidering with a bolt circle diameter of 104 mm to the outer position. The bolt circle diameter of 104 mm is fitted etc. at most 3 chainrings from Sram, Shimano. The CNC machined chainrings BOR of high-strength aluminum, are hardened as ever in a special process with a glass mount peening and then anodized with 3 times the usual layer thickness. This Double Surface Treatment gives the leaves thereby increased durability! The chainrings of BOR have 4 switching ramps and integrated -hilfen for a clean and fast gear changes.
BOR 3x chainrings are DI2 / EPS - compatible.
bolt circle diameter: 104 mm
Compatibility: 9-speed, 10-speed, 11-speed
1x BOR chainring 44 teeth