Description
SRAM RED AXS Aero Power Meter Chainring Kit 50t 12 13 Speed 8 Bolt Direct Mount BLK E1 MFPN=RB22EC90ALX10D42 while 112 BCD inner rings SA1058 MFPN=3984300 Mtnbike Tube Size:29 X 1.6 2.4 25 Tire Type Tubeless while 112 BCD inner rings are shared between the two groups ferrule 10 mm