About This Product
Rennen 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 chainwrench 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 3oz makes it one of the lightest out there.