SRAM RED AXS Aero Power Meter Chainring Kit - 48t 12/13-Speed 8-Bolt Direct Mount BLK E1 Model=Rival 1x XPLR 12/13-Speed Wide Crank Arm Assembly E1 The Black Jack provides a

The Black Jack provides a versatile tread with good grip and easy rolling

Works with SRAM Flattop chain

but often competitive also in colder weather

Hydraulic Bottom Out Spring Type Coil Spring Adjustments Preload Primary Color Black

SRAM RED AXS Aero Power Meter Chainring Kit - 48t 12/13-Speed 8-Bolt Direct Mount BLK E1 Model=Rival 1x XPLR 12/13-Speed Wide Crank Arm Assembly E1 The Black Jack provides aIntegrated power meter and chainring combo Accurate to + 1. 5% and unaffected by temperature changes Integrated rings are incredibly long lasting Combine with 8 bolt compatible crankarms SRAM Model ID: PM AXS KITA E1 TECH SPECS BB Inclusion No BCD Direct Mount SRAM 8 Bolt Connectivity ANT+ BT Teeth 48 Speed 12