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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
Suitable for trails
2mm post diameter size
The Stay Strong 4-Bolt Chainring at J&R Bicycles is made of fully CNC machined aircraft-grade 7075 aluminum which makes for a strong and lightweight cog
FIT: Pivotal seat post
Volcano cones
Rennen Chainring-4-Bolt 104 BCD Standard Gear Size:37T Suitable for trailsThe Rennen Chainring 4 Bolt at J&R Bicycles is made from airplane grade 7075 T6 aluminum alloy which is 83 percent stronger than the standard 6061 T6. This premium alloy is also super lightweight. One of the lightest out there. Rennen designed these chainrings with a single speed specific tooth shape for added durability. These 104mm BCD chainrings are the popular choice of the top Pro BMX racers around the world
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