SRAM RED XG-1290 Cassette - 12-Speed 10-36t For XDR Driver Body Silver E1 MFPN=IC21-PRBB30 Equipped with Bluetooth and ANT+

Equipped with Bluetooth and ANT+ technology to seamlessly pair with fitness apps smartphones and GPS bike computers and watches

Shimano Dura-Ace RD-R9100 Rear Derailleur

Add the transitional height mid and side tread and the Terreno Dry transitions as smoothly as it rolls

model Tigon Coil stroke 55mm eye-eye 210mm

SRAM RED XG-1290 Cassette - 12-Speed 10-36t For XDR Driver Body Silver E1 MFPN=IC21-PRBB30 Equipped with Bluetooth and ANT+Designed for smooth and fast shifting Gradual gear progression between cogs at least five one tooth jumps on 10 28T, 10 30T and 10 33T cassettes while still offering a wider range 10 tooth start helps provide a wider gearing range Designed to work with an XDR driver body One piece machined steel X DOME design for weight savings SRAM Model ID: CS XG 1290 E1 TECH SPECS Cassette Freehub Compatibility XD R Cog Material Steel Range 10 36T Cassette Spider