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Rennen Threaded BMX Chainring 4 Bolt 104 BCD Gear Size:52T 3 8” axle slots only Gear Size:37.8T 3 8” axle slots only this fork remains strong and responsive and super lightweight 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
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