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Transition Sentinel Alloy GX Mountain Bike - 2020, Medium

Item #BMT26772
Condition: Certified Pre-Owned
Fit Range: 5'7" - 5'10"

Trade In
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Every Certified Pre-Owned bike passes our multi-point inspection
  • Frame integrity verified
  • All components inspected
  • Drivetrain cleaned and tuned
  • Suspension adjusted
  • Wheels trued
Shipping

Our RideFast shipping means this bike gets to you quickly and securely.

Quick Assembly
  • Bikes arrive tuned and mostly pre-assembled
  • Torque tool & video guide included
  • Get riding in 15 minutes
Canadian Customers

Please note that any duties, taxes, or surcharges as required by Canadian customs and provincial authorities will be the buyer's responsibility. Shipping to Canadian addresses may take longer than expected due to customs.

Guaranteed Buyback

We'll happily purchase this bike back from you when you're ready for your next upgrade. A TPC buyback offer is guaranteed for 18 month on all qualifying bikes.

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Unicorn's Do Exist

Why We Love It
The Sentinel is a mid-upper travel 29er steed that will give you confidence to hit lines and features you used to go around. Transition's "SBG" (Speed Balanced Geometry) ensure's the bike feels agile at slow speeds, stable at fast speeds, increases front wheel traction, and ensures proper rider weight distribution. Combine this stellar geometry with Transition's "Collet main pivot technology", which improves rear end stiffness as well as keeping your hardware tight (no one likes discovering missing hardware on their bike). Not just a fair weather rider? Don't worry, Transition has your back there as well with additional pivot bearing shields to keep contamination and moisture out so you can ride worry free. Looking through this bike, it truly feels like Transition has thought of every way to make our lives easier. Threaded bottom brackets, user friendly cable routing, ample tire clearance, frame protection in all the right places, and a gear mount under the top tube are just some of the amazing touches we love about this trail ripper. Its lively, it pops, it climbs, its truly a unicorn in the bike world.
Upgrades
  • absoluteBLACK Oval Chainring
Master Mechanic’s Notes
  • New bottom bracket
  • New WTB Speed Terra aluminum rear wheel
  • New SRAM chain
  • Moderate scratches on the chainstays & seatstays
  • Moderate scratches on the top tube & down tube
Specifications
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Details
Original MSRP $4,399.00
Year 2020
Brand Transition
Model Sentinel Alloy GX
Size Medium
Frame Material Aluminum
Drivetrain SRAM, 1x12 spd
Weight 35 lbs 2 oz
Build
Fork RockShox Lyrik
Fork Travel 160mm
Rear Shock FOX Performance Series FLOAT DPX2
Rear Shock Travel 140mm
Brakes SRAM Code RSC, Disc Brakes - Hydraulic
Shifters SRAM GX Eagle, Mechanical
Front Derailleur N/A
Rear Derailleur SRAM GX Eagle
Bottom Bracket Shell Threaded
Crankset Truvativ Descendant w/absoluteBLACK Oval Chainring, 30t, 170 mm
Cassette SRAM Eagle XG-1275, 10-50t
Chain SRAM
Handlebar ANVL Mandrel Alloy, 800 mm
Headset FSA Integrated
Stem ANVL, 35.0 mm x 35mm, 0°
Seatpost OneUp Dropper, 31.6mm
Seatpost Travel 150mm
Saddle WTB Pure
Front Axle Spacing 15x110mm Boost (Thru-Axle)
Rear Axle Spacing 12x148mm Boost (Thru-Axle)
Wheelset Front: e*thirteen trs Disc Aluminum Tubeless Ready / Rear: WTB Speed Terra Disc Aluminum Tubeless Ready, Front: Novatec / Rear: WTB
Front Tire Schwalbe Magic Mary TL Easy EVO, 29" x 2.4"
Rear Tire Schwalbe Big Betty TL Easy EVO, 29" x 2.4"
Tire Type Tubeless
Tubeless Compatibility Wheels are tubeless compatible but ships with tubes installed
Pedals Sold separately
Geometry
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Bike geometry chart
Inspected. Tested. Trusted.

What is CPO?

CPO bikes are gently ridden bikes that have been meticulously inspected, restored and serviced. Every CPO bike is cleaned, tuned and tested in our top-of-the-line Colorado headquarters. Road, mountain, ebike or gravel, TPC services each bike over 8 phases and multiple points of inspection.

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Bikes are meant
to be used.