If you're running a SRAM Red or Force AXS crankset with the 8-bolt direct mount interface and want to swap between chainring sizes without buying a whole new crankset — or you've picked up an aftermarket 107 BCD ring you want to bolt on — this is the spider that makes it happen. SRAM's RED/Force AXS Crank Spider affixes chainrings with a 107 BCD to select cranks with SRAM's 8-bolt direct mount interface, and it is not compatible with SRAM's 3-bolt direct mount interface. That distinction matters, so check your crank arm before ordering — if you see three bolts holding the spider in place instead of eight, this isn't your part.

Crafted from aluminum, the 4-arm spider handles any SRAM chainring with a 107mm BCD. That opens up the full range of Red and Force AXS chainring options: 46/33, 48/35, 50/37, and the wider 43/30 configurations all bolt to the same platform. If you're going from a compact to a mid-compact for a hillier season, or building up a second crankset for a training bike, you're changing one component instead of an entire crank assembly.

The spider comes with all the mounting hardware including Torx T20 bolts, chainring bolts and bolt covers, so installation doesn't require a separate hardware kit. The spider does not include a power meter — this is the non-power version, meant either for riders who don't run power or as a lighter alternative to the Quarq spider-based unit. If you want power measurement, that's a different SKU entirely.... Read More