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2025 Transition Sentinel Alloy Deore Bike

2025 Transition Sentinel Alloy Deore Bike

$2,799.00
$2,799.00 $3,499.00
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  • Premium Component Quality
Color: Glacier White
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Key Features

  • Transition Sentinel Hydroformed Aluminum V3 frame (2025) with 150mm of GiddyUp Horst-Link rear suspension.
  • Capable suspension handled by the RockShox Psylo Gold RC fork (160mm) and RockShox Super Deluxe Base shock.
  • Reliable Shimano Deore 1x12-speed drivetrain and powerful Deore M6120 4-piston hydraulic disc brakes with 203mm rotors.
  • Adjustable wheel sizing: XS uses 27.5", while SM-XXL can be run **29" or Mixed ("Mullet")** via a flip chip.
  • Aggressive Maxxis tire pairing: Assegai (front, 2.5") and Minion DHR II (rear, 2.4") (3C MaxxTerra compound on both).
  • Features a long-travel SDG Tellis dropper post (up to 230mm drop on XL/XXL).
  • Includes a pre-installed integrated mud guard and Fidlock Twist Bike Base bottle mount.
  • Internal cable ports allow for customizable shifting and brake setups.

Full Specifications

Product Transition Sentinel Alloy Deore Bike
Model Year 2025
Intended Use Enduro / All-Mountain
Rider Unisex
Frame Material Aluminum
Frame Material Details Molded chainstay, seatstay, and lower down tube protection (V3 version)
Rear Travel 150mm (Upgradable to 160mm with 65mm stroke shock)
Rear Shock RockShox Super Deluxe Base, 205mm x 60mm stroke
Fork RockShox Psylo Gold RC, 35mm stanchions
Fork Travel 160mm
Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
Headset FSA No.57E, ZS44 upper, ZS56 lower
Handlebar Race Face Chester, 800mm width, 35mm clamp
Rise: 20mm (XS/SM), 35mm (MD-XXL)
Stem Race Face Aeffect R, 40mm length, 35mm bar clamp
Grips ODI Elite Flow, lock-on
Brakes Shimano Deore M6120, 4-piston
Rotors Shimano RT66, 203mm
Brake Levers Shimano Deore M6100
Drivetrain 1x
Shifters Shimano Deore M6100, 12-speed, I-SPEC EV
Front Derailleur None
Rear Derailleur Shimano Deore M6100, 12-speed, SGS cage
ISCG Tabs ISCG05
Chainguide None
Cranks Shimano Deore M6100 Alloy, 165mm length
Chainrings Shimano Deore M6100, 30 tooth
Bottom Bracket 73mm English/BSA threaded
Pedals None
Chain Shimano Deore M6100, 12-speed
Cassette Shimano Deore M6100, 10-51 tooth, 12-speed
Rims WTB ST i30 Alloy, 30mm inner width
Hubs Novatec D791SB (15 x 110mm front), D902SB (12 x 148mm rear) with MICRO SPLINE driver
Spokes Pillar, double-butted
Tires Front: Maxxis Assegai, 3C MaxxTerra, EXO, 2.5"
Rear: Maxxis Minion DHR II, 3C MaxxTerra, EXO, 2.4"
Saddle SDG Bel-Air V3
Seatpost SDG Tellis dropper
Drop: 125mm (XS), 150mm (SM), 170mm (MD), 200mm (LG), 230mm (XL/XXL)
Seatpost Diameter 31.6mm
Seatpost Clamp Single bolt, 34.9mm
Rear Dropout / Hub Dimensions 12mm x 148mm (Boost)
Max. Tire Size 2.5"
Bottle Cage Mounts One inside front triangle, plus accessory mounts under top tube
Colors Deep Purple, Graphite Grey, Glacier White
Warranty Lifetime frame
Weight 36 lb 6.4 oz (16510 g) - Size MD
Miscellaneous
  • GiddyUp four-bar Horst-link rear suspension design
  • XS has 27.5" wheels; SM-XXL have 29" wheels front/rear (MX option via flip chip)
  • Internal cable routing with customizable side headtube ports
  • SRAM UDH (Universal Derailleur Hanger)
  • Includes pre-installed integrated mud guard, tubeless valves and sealant, Fidlock Twist Bike Base mount

Geometry

Size (Setting) XS 27.5" SM (29", MX) MD (29", MX) LG (29", MX) XL (29", MX) XXL (29", MX)
Top Tube Length 534mm 557mm 586mm 614mm 642mm 670mm
Head Tube Angle 64.0° 64.0°, 63.6° 64.0°, 63.6° 64.0°, 63.6° 64.0°, 63.6° 64.0°, 63.6°
Head Tube Length 100mm 100mm 110mm 120mm 130mm 140mm
Seat Tube Angle 79.2° 78.7°, 78.2° 77.9°, 77.5° 77.3°, 76.9° 76.8°, 76.4° 76.5°, 76.2°
Seat Tube Length 360mm 360mm 390mm 430mm 460mm 490mm
Bottom Bracket Height 340mm (15mm drop) 350mm (25mm drop), 344mm (11mm drop) 350mm (25mm drop), 344mm (11mm drop) 350mm (25mm drop), 344mm (11mm drop) 350mm (25mm drop), 344mm (11mm drop) 350mm (25mm drop), 344mm (11mm drop)
Chainstay Length 434mm 442mm, 440mm 442mm, 440mm 446mm, 444mm 446mm, 444mm 446mm, 444mm
Wheelbase 1171mm 1208mm 1237mm 1271mm 1300mm 1330mm
Reach 415mm 430mm, 426mm 455mm, 451mm 480mm, 476mm 505mm, 501mm 530mm, 526mm
Stack 592mm 615mm, 618mm 621mm, 624mm 633mm, 636mm 642mm, 646mm 651mm, 655mm
Additional Info
  • XS has 27.5" wheels. SM-XXL are set up 29" but can run mixed ("Mullet") wheels via the flip chip.
  • The first geometry value listed for SM-XXL is for the 29" setting (High BB/Steeper HTA); the second is for the Mullet setting (Low BB/Slacker HTA).
  • Effective seat tube angles are calculated at a saddle height of 560mm (XS), 600mm (SM), 660mm (MD), 720mm (LG), 780mm (XL), 820mm (XXL).
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  • A Promise of Reliability

    We guarantee your gear is ready for anything the road or trail throws at you

  • Expertly Tuned & Dialed In

    Every component is inspected and meticulously fine-tuned by our team

  • Rider-Verified Performance

    Gear that has proven itself on our own races, trails, and open road journeys

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Passion drives us

At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.

RIDERS WHO VALUE QUIET STRENGTH, TRUST SPOKEX

  • A Promise of Reliability

    We guarantee your gear is ready for anything the road or trail throws at you

    - Liam R.

  • Expertly Tuned & Dialed In

    Every component is inspected and meticulously fine-tuned by our team

    - Dan M.

  • Rider-Verified Performance

    Gear that has proven itself on our own races, trails, and open road journeys

    - Alex S.

NEED HELP? FIND YOUR ANSWER HERE

When will my order ship?

Most in-stock items ship within 1–2 business days. Built-to-order products may require a little extra time.

Do you offer fast shipping?

Yes - we ship quickly across the U.S. and internationally. Delivery estimates appear at checkout.

Is this product compatible with my bike?

Check the specs on the page. If you’re unsure, contact us and we’ll confirm fitment before you buy.

What is your return policy?

Unused items can be returned within our standard return window. Custom-built products may...

Is this product covered by warranty?

Yes - all products include full manufacturer warranty, and we can help with any claims.