Skip to content
Cart

Sorry, this Transition Sentinel Alloy Mountain Bike - 2023, Medium isn't available.
You'll be the first to know next time this or similar products are available.

Transition Sentinel Alloy Mountain Bike - 2023, Medium

Item #BMT33570
Condition: Certified Pre-Owned
Fit Range: 5'6" - 5'10"

Trade In
Eye icon Pulsating eye icon that grows and shrinks people are looking at this
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.

More details More details icon

Unicorns 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.
Master Mechanic’s Notes
  • New Spank Spoon handlebar grips
  • Light scratches on the top tube, down tube, head tube, fork lowers, & rear triangle
  • Light scratches along the rear derailleur, crank arms, & wheelset
Specifications
Toggle accordion
Details
Original MSRP $4,999.00
Year 2023
Brand Transition
Model Sentinel
Size Medium
Frame Material Aluminum
Drivetrain SRAM, 1x12 spd
Weight 33 lbs 11 oz
Build
Fork FOX Performance Elite Series 36 FLOAT
Fork Travel 160mm
Rear Shock FOX Performance Elite Series FLOAT X
Rear Shock Travel 140mm
Brakes Shimano SLX M7100, Disc Brakes - Hydraulic
Shifters Shimano SLX M7100, Mechanical
Rear Derailleur Shimano SLX M7100
Bottom Bracket Shell Threaded
Crankset Shimano SLX M7100, 30t, 170mm
Cassette Shimano SLX M7100, 10-51t
Chain KMC
Handlebar OneUp Components Carbon, 800mm
Headset Cane Creek
Stem OneUp Components Alloy, 35.0mm x 40mm, 0°
Seatpost OneUp Components OneEighty Dropper, 31.6mm
Seatpost Travel 180mm
Saddle Fabric w/ Steel Rails
Front Axle Spacing 15x110mm Boost (Thru-Axle)
Rear Axle Spacing 12x148mm Boost (Thru-Axle)
Wheelset Industry Nine Enduro S Alloy Tubeless Compatible, Industry Nine 1/1
Front Tire Maxxis Assegai EXO TR, 29" x 2.5"
Rear Tire Maxxis Minion DHR II 3C MaxxTerra EXO TR, 29" x 2.4"
Tire Type Tubeless
Tubeless Compatibility Bike ships tubeless
Pedals Sold separately
Geometry
Toggle accordion
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.

Learn More

Bikes are meant
to be used.