Rennen Threaded Chainring-4-Bolt 104 BCD chainring-bolts precision 45x45 bearings

precision 45x45 bearings

Material: CNC machined 6061-T Aluminum

*New Era 59-Fifty

MATERIAL: 4130 CrMo

RIM FIT- Pro (1

Rennen Threaded Chainring-4-Bolt 104 BCD chainring-bolts precision 45x45 bearingsRennen takes their commitment to advancing BMX racing technology seriously and with the Rennen Threaded Chainring 4 Bolt at J&R Bicycles this is obvious. They have machined internal threads into the gears of this sprocket which eliminates the need for a chainring nut wrench and allows for more accuracy. Made from super strong 3 16in thick 7075 T6 aluminum it can handle all kinds of conditions and weighing less than most other options on the market.