Rennen Threaded Chainring-4-Bolt 104 BCD chainring-bolts BOLT REQUIREMENT: Uses 4 bolt

BOLT REQUIREMENT: Uses 4 bolt pattern for Answer and Speedline mini cranks

The Promax Brake Kit 108mm (pro) features the Promax Click V-Point brake lever (long) and the Promax P-1 V-Brake 108mm (pro)

Material: CNC machined 6061-T Aluminum

MATERIAL: 4130 CrMo

Rennen Threaded Chainring-4-Bolt 104 BCD chainring-bolts BOLT REQUIREMENT: Uses 4 boltRennen 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.