Transition Bikes

Send-it-all on the Sentinel

A bike that says yes to every trail, every ride, and begs for more.

The Sentinel rides the lines between planted bottomless sender and playful, poppy trail pony. This leaves it right in the sweet spot, as we like to call it. Its versatile attitude helps riders excel and push their limits, making it the "one bike" most will need. Its 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.

SELECT BUILD:

$4,599

$3,699 USD

$4,999

$3,999 USD

$6,499

$4,999 USD

$6,699

$4,999 USD

$7,999

$6,399 USD

$2,199

$1,499 USD

$3,599

$2,699 USD

SELECT COLOR: Deep Purple

SELECT SIZE:

X-Small

View Closeout Sentinel Models Here!

$4,599

$3,699 USD

IN STOCK: Ships within 2 business days

Ship To Me

Ship To Dealer

SHIP TO DEALER: If you prefer picking your bike up from your local authorized Transition Bikes dealer with free professional assembly, please make sure you choose Ship To Dealer above or during checkout.

FREE SHIPPING: We offer free shipping on all bikes and frames, see checkout for additional details.

LIFETIME WARRANTY: Our bikes are built to last and are backed by our lifetime warranty, so you can ride harder and worry less.

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PRICE

$4,599

$3,699 USD

$4,999

$3,999 USD

$6,499

$4,999 USD

$6,699

$4,999 USD

$7,999

$6,399 USD

$2,199

$1,499 USD

$3,599

$2,699 USD

FRAME

Sentinel Alloy 150mm

Sentinel Carbon 150mm

Sentinel Alloy 150mm

Sentinel Carbon 150mm

WHEEL SIZE

27.5

27.5"

REAR SHOCK

RockShox Super Deluxe Select+
(205x60mm)

RockShox Super Deluxe Select
(205x60mm)

RockShox Super Deluxe Ultimate
(205x60mm)

Fox Float X Factory
(205x60mm)

RockShox Super Deluxe Ultimate
(205x60mm)

FORK

RockShox Lyrik Select+
(160mm)

RockShox Lyrik Base
(160mm)

RockShox Lyrik Ultimate
(160mm)

Fox Float 36 Grip X2 Factory
(160mm)

HEADSET

FSA No.57E

Not Included

STEM

ANVL Swage (40mm)

RaceFace Aeffect R (40mm)

ANVL Swage (40mm)

HANDLEBAR

ANVL Mandrel Alloy 35
(800x20mm)

RaceFace Chester
(800x20mm)

ANVL Mandrel Alloy 35
(800x20mm)

OneUp Carbon Bar
(800x20mm)

GRIPS

ODI Elite Flow Lock-On

SADDLE

SDG Bel Air 3

SDG Bel Air 3 LUX

SEATPOST

OneUp Dropper Post
(120mm)

SDG Tellis
(125mm)

OneUp Dropper Post
(120mm)

Fox Transfer Factory
(120mm)

BRAKES

Shimano XT M8120 4 Piston

Shimano Deore M6120 4 Piston

Shimano XT M8120 4 Piston

SRAM Maven Bronze

SRAM Maven Silver

ROTORS

Shimano RT86 (203mm)

Shimano RT66 (203mm)

Shimano RT86 (203mm)

SRAM Centerline (200mm)

SRAM HS2 (200/180mm)

SHIFTER

Shimano XT M8100 iSpec EV

Shimano Deore M6100 iSpec EV

Shimano XT M8100 iSpec EV

SRAM Eagle 90 MMX

SRAM POD Ultimate Bridge MMX

DERAILLEUR

Shimano XT M8100 SGS 12sp

Shimano Deore M6100 SGS 12sp

Shimano XT M8100 SGS 12sp

SRAM Eagle 90

SRAM XO AXS Eagle Transmission

CASSETTE

Shimano XT M8100 (10-51t)

Shimano Deore M6100 (10-51t)

Shimano XT M8100 (10-51t)

SRAM XS 1275 T-Type (10-52t)

SRAM XS 1295 T-Type (10-52t)

CHAIN

Shimano XT M8100

Shimano Deore M6100

Shimano XT M8100

SRAM GX Eagle Transmission

SRAM XO Eagle Transmission

CRANK

Shimano XT M8100
(30t/165mm)

Shimano Deore M6100
(30t/165mm)

Shimano XT M8100
(30t/165mm)

SRAM Eagle 90 DUB
(30t/165mm)

SRAM XO Eagle DUB T-Type
(30t/165mm)

RIMS

DT Swiss M 1900 Spline 30

WTB ST i30

DT Swiss M 1900 Spline 30

DT Swiss XM 481

SPOKES

DT Swiss Champion

Pillar Double Butted

DT Swiss Champion

DT Swiss Competition

HUBS

DT Swiss 370 Ratchet LN

Novatech D791SB/D902SB

DT Swiss 370 Ratchet LN

DT Swiss 350 Classic DEG

TIRE/FRONT

Maxxis Assegai 3C EXO+ (2.5)

Maxxis Assegai EXO/TR (2.5)

Maxxis Assegai 3C EXO+ (2.5)

TIRE/REAR

Maxxis Minion DHRII 3C EXO+ (2.4)

Maxxis Minion DHRII EXO/TR (2.4)

Maxxis Minion DHRII 3C EXO+ (2.4)

INCLUDED

Fidlock Twist Bike Base
Tubeless Valves & Sealant

Fidlock Twist Bike Base
SRAM AXS Battery Charger
Tubeless Valves & Sealant

Fidlock Twist Bike Base

COLOR OPTIONS

	Deep Purple
	Graphite Grey
	Glacier White

	Deep Purple
	Graphite Grey
	Glacier White

	Deep Purple
	Graphite Grey
	Glacier White

	Deep Purple
	Glacier White
	Graphite Grey

	Deep Purple
	Graphite Grey
	Glacier White

	Deep Purple
	Graphite Grey
	Glacier White

	Deep Purple
	Graphite Grey
	Glacier White

WEIGHT

34.4 lbs/15.58 kg

33.6 lbs/15.21 kg

32.9 lbs / 14.92 kg

33.2 lbs/15.07 kg

9.91 lbs / 4.50 kg

7.41 lbs / 3.36 kg

Specs are subject to change at any time. All complete bikes are 95% assembled and packaged for quick and easy final assembly, and as such, Transition Bikes is not able to make special request build spec changes or modifications to packaging.

"The Sentinel V3 remains true to its ride-everything identity while improving its climbing efficiency and responsiveness on low-angle trails. Still a capable descender that can hold its own on when things get gnarly, the Sentinel flourishes most on trails that maximize its maneuverability and fast handling. You tack on the new additions of mixed wheel compatibility, internal storage, updated chain slap protection, reworked cable routing, UDH on carbon frames, and a geometry flip chip, and the Sentinel V3 answers the wants of many past owners. Refined, not redesigned, looks pretty damn good." - Jason Schroeder / Vitalmtb.com

FULL REVIEW

"Since it was first launched, the Sentinel has represented exactly what you want in a trail bike, and the latest version continues the tradition: it's happy to pedal and climb all day long if you need it to, but it's all still in service of the descent. And when that time comes, the Sentinel delivers. Even if you get in a bit over your head, it has you covered. It won't replace the big bike for some, and it isn't pretending to, but it does a great job as a stand in. As far as trail bikes go, the Sentinel keeps its spot high on my list of favourites." - Pete Roggeman / nsmb.com

FULL REVIEW

"I think this bike is for the mountain biker â€” for the purist, the minimalist, the no-nonsense-ist. It's not full of fancy bells and whistles, no marketing gimmicks, no proprietary BS, and despite all that, it's a damn good bicycle. It's a mountain bike with ports to route your damn shifter cables if you want them. It takes that same mentality out to the trails. It goes uphill and downhill and doesn't pigeonhole itself into some tiny little niche. It's happy in all kinds of terrain and never gets in your way. It goes as hard or easy as you'd like, it's just happy to be outside in the woods." - Conor Barry / Bikers Edge

FULL REVIEW

"As far as a summary on the new Sentinel, I am extremely impressed by my first impressions and I'm hard pressed to pick apart a single low point. While many things appeal in terms of the bike's features, it was the improved ride quality - which stems from perfectly refined kinematics and razor sharp geometry - that really won me over." - Ian Collins / MTB-Mag

FULL REVIEW

VITAL MTB NSMB BE BIKES MTB MAG

	Speed Balanced Geometry
		XS

	A.REACH	415

	B.STACK	592

	C.EFFECTIVE TOPTUBE LENGTH	527

	D.SEATTUBE LENGTH	360

	E.EFFECTIVE SEATTUBE ANGLE	79.5

	SADDLE HEIGHT FOR EFFECTIVE SEATTUBE ANGLE	560

	F.HEADTUBE LENGTH	100

	G.HEADTUBE ANGLE	64

	H.CHAINSTAY LENGTH	436

	I.WHEELBASE	1173

	J.BOTTOM BRACKET DROP (FRONT)	15

	J.BOTTOM BRACKET DROP (REAR)	15

	K.ESTIMATED BOTTOM BRACKET HEIGHT	340

GENERAL SPECS
FRAME MATERIAL:	Carbon or Alloy

WHEEL SIZE:	29" or MX (XS 27.5" Only)

SIZES:	XS, SM, MD, LG, XL, XXL

COMPONENT COMPATIBILITY
FORK OFFSET:	44mm (XS 37mm)

FORK AXLE-TO-CROWN:	578mm (Includes headset) (XS 560mm)

HEADSET (TOP):	44mm Zero Stack

HEADSET (BOTTOM):	56mm Zero Stack

BB:	73mm BSA Threaded

CHAINGUIDE:	ISCG05

CHAINRING MAXIMUM:	34T Standard Single Ring

CHAINLINE:	52-55mm

REAR BRAKE MOUNT:	180mm Post Mount, Max Rotor Size 223mm

REAR AXLE:	Transition Axle For UDH, 12mm x 148mm Spacing

SEAT CLAMP:	Carbon: 37.0mm Alloy: 34.9mm

SEATPOST DIAMETER:	31.6mm

TIRE MAXIMUM:	29" x 2.5" (*see FAQ)

SUSPENSION SPECS
FRONT TRAVEL:	160mm

REAR TRAVEL:	150mm (Compatible with 160mm)

SHOCK SIZE:	205mm x 60mm (compatible with 205 x 65mm)

SHOCK HARDWARE:	Trunnion Mount Top / 30mm x 8mm Bottom

SAG SETUP:	150mm/60mm: 16-20mm (26-32%)

BEARINGS:	Alloy: 2x 6903, 2x 6902, 4x 6802, 2x 3802, 2x 6900 Carbon: 2x6903, 2x6902, 6x6802, 2x6900

OVERVIEW/BUY

BUILD SPECS

FEATURES

SBG GEOMETRY

REVIEWS

FRAME SPECS

FAQ'S

SUPPORT/SETUP

Transition Sentinel Enduro/Trail Mountain Bike