Cassettes that fit the 2026 Specialized Tarmac SL8 Comp - SRAM Rival AXS
This bike runs 12-speed, SRAM Flattop (road) chain, SRAM XDR freehub, and its rear derailleur reaches a 36t largest cog.
Worked out from the bike's stock drivetrain — derived: cassette SRAM NEW SRAM Rival XG-1250, 12sp, 10-36t spec; chain SRAM NEW SRAM Rival E1 spec; rear derailleur SRAM NEW SRAM Rival AXS E1 spec
Fits as-is
Mounts on the freehub body this bike already has.
- SRAM Force XG-1270 Cassette (10-28t)10–28t
12-speed
- SRAM Force XG-1270 Cassette (10-30t)10–30t
12-speed
- SRAM Force XG-1270 Cassette (10-33t)10–33t
12-speed
- SRAM Force XG-1270 Cassette (10-36t)10–36t
12-speed
- SRAM RED XG-1290 Cassette (10-28t)10–28t
12-speed
- SRAM RED XG-1290 Cassette (10-30t)10–30t
12-speed
- SRAM RED XG-1290 Cassette (10-33t)10–33t
12-speed
- SRAM RED XG-1290 Cassette (10-36t)10–36t
12-speed
- SRAM Rival XG-1250 Cassette (10-30t)10–30t
12-speed
- SRAM Rival XG-1250 Cassette (10-36t)10–36t
12-speed
Not sure what the numbers mean? Our cassette guide covers speed counts, gearing ranges and how the freehub bodies differ.
Know when the next set is due
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