Transition Sentinel

ChainLine Cycle Verified independent store

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Trail Bike (Carbon or Alloy) · 29" or Mixed Transition's best-selling trail bike, and arguably the sweet-spot 29er on the market. 150mm rear travel, 160mm fork, designed to climb a ll day in service of the descent. The V3 (2025+) brings mixed-wheel compatibility (flip-chip), Transition's internal "BOOM Box" storage (on carbon frames), size-adjusted chainstays, updated cable routing, and UDH. Available as alloy or carbon; carbon gets internal storage. Horst-link suspension means excellent traction and mid-stroke support. Offered in Eagle 70 and Eagle 90 (T-Type Transmission) builds. At a Glance Frame: Carbon Fiber or 6061 Aluminum, 150mm rear travel, 29" or Mixed (27.5" rear) via flip chip, Horst-Link suspension, BSA Threaded BB, SRAM UDH (carbon), BOOM Box internal storage (carbon only) Fork: RockShox Lyrik or Fox 36, 160mm travel (180mm max compatible) Rear Shock: RockShox Super Deluxe or Fox Float X, 205x60mm trunnion (upgradable to 65mm stroke for 160mm travel) Drivetrain: SRAM Eagle 90 T-Type Transmission (or Eagle 70), 12-speed Brakes: SRAM Motive/DB8 or equivalent, 4-piston Full Specifications Frame Carbon Fiber or 6061 Aluminum, 150mm rear travel, 29" or Mixed (27.5" rear) via flip chip, Horst-Link suspension, BSA Threaded BB, SRAM UDH (carbon), BOOM Box internal storage (carbon only) Fork RockShox Lyrik or Fox 36, 160mm travel (180mm max compatible) Rear Shock RockShox Super Deluxe or Fox Float X, 205x60mm trunnion (upgradable to 65mm stroke for 160mm travel) Drivetrain SRAM Eagle 90 T-Type Transmission (or Eagle 70), 12-speed Brakes SRAM Motive/DB8 or equivalent, 4-piston Geometry 64° head angle, flip-chip adjustable (also mullet flip) Sizes XS, S, M, L, XL, XXL (XS uses dual 27.5" wheels) Frame weight (carbon) ~7.4 lb / 3.36 kg Show more