The new Transition Sentinel .A bike that says yes to every trail, every ride and begs for more. The Transition Sentinel rides the lines between planted bottomless sender and playful, poppy trail pony. This leaves it right in the sweet spot. It's versatile attitude helps riders excel and push their limits, making it the one bike most will need. The Transition Sentinel intuitive nature is easy to get acquainted with; you'll find yourself sending lines, jumps, and maneuvers you always felt were beyond your ability. Where before you went around, now you go over. Where you pushed up, now you pedal. Where you rolled, now you boost. It's time to Send-It-All. Product Transition Sentinel Carbon Deore Bike Model Year 2025 Riding Type Enduro / All-Mountain Rider Unisex Sizes and Geometry XS S M L XL XXL Wheel Size 27.5" (650b) 29" Frame Material Carbon Fiber Frame Material Details Rear Travel 150mm Rear Shock RockShox Super Deluxe Select, 205x60mm Fork RockShox Lyrik Base, 44mm offset (XS 37mm) Fork Travel 160mm Head Tube Diameter Tapered Headset FSA No.57E (44mm Zero Stack Top | 56mm Zero Stack Bottom) Handlebar Race Face Chester, 800x20mm (XS-S), 800x35mm (M-XXL) Stem Race Face Aeffect R, 40mm Grips ODI Elite Flow Lock-On Brakes Shimano Deore M6120 4-Piston, 203mm Shimano RT66 Rotors Brake Levers Shimano Deore Drivetrain 1x Shifters Shimano Deore M6100 iSpec EV Front Derailleur None Rear Derailleur Shimano Deore M6100 SGS 12-Speed ISCG Tabs ISCG 05 Chainguide None Cranks Shimano Deore M6100, 165mm Chainrings 30 Tooth Bottom Bracket 73mm Threaded Pedals None Chain Shimano Deore M6100 Cassette Shimano Deore M6100, 10-51 Tooth Rims WTB ST i30 Hubs Novatech D791SB/D902SB Spokes Pillar Double Butted Tires Front: Maxxis Assegai 3C EXO/TR, 29"x2.5" (27.5" on Size XS) Rear: Maxxis Minion DHR II 3C EXO/TR, 29"x2.4" (27.5" on Size XS) Saddle SDG Bel Air V3 Seatpost SDG Tellis Travel: 125mm (XS), 150mm (S), 170mm (M), 200mm (L), 230mm (XL-XXL) Seatpost Diameter 31.6mm Seatpost Clamp 37.0mm Single Bolt Rear Dropout / Hub Dimensions 12mm x 148mm (Boost) Max. Tire Size 2.5" Bottle Cage Mounts One inside front triangle Colors Glacier White, Deep Purple, Graphite Grey Warranty • The V3 Sentinel, released in 2024, is covered for life against manufacturing defects • All Transition Bikes frames are covered by a “Crash Replacement Policy” to the original or second-hand owner Weight 33 lb 8.5 oz (15,210 g) Miscellaneous • V3 version • BOOM Box (Burritos Or Other Munchies) in-frame storage with supplied storage bags • 29" wheels on sizes S-XXL and mixed wheel compatible, dual 27.5" on size XS • Main pivot mudguard • New cable-routing ports • Refined kinematics for a lively, progressive platform • 24% rear shock progression • SRAM UDH derailleur hanger • Geo-adjust flip chip in lower shock mount to accommodate mixed wheels • 205mm x 60mm rear shock size (compatible with 205mm x 65mm) • Shock hardware: Trunnion mount top / 30mm x 8mm bottom • Recommended rear shock sag: 16-20mm (26-32%) • Coil and air shock compatible • Included with bike: Fidlock Twist Bike Base, Tubeless Valves and Sealant