Promax Direct Mount Chainring-Black Size:42t WIDTH OD: 31

WIDTH OD: 31

Time to flex the cranks at the track

and (2) compression nuts

Fits cranks such as the Shimano DXR

Alloy double wall "Brakeless" design

Promax Direct Mount Chainring-Black Size:42t WIDTH OD: 31The Promax Direct Mount Chainring Black at J&R Bicycles is crafted from high grade 7K series aluminum for the perfect blend of lightweight design and durability. This chainring is built to meet the demands of modern BMX racing with precision CNC machining and the innovative SRAM 3 bolt direct mount interface replaces the need for a spider, reducing weight without sacrificing strength. Engineered to complement Promax HF 3 and CK 1 cranksets, as well as