Transition Bikes

The Hard Charging
All-Rounder

The Sentinel inspires confidence like you're wearing full body armor.

It's forgiving do-it-all attitude truly blurs the lines between planted bottomless sender and playful poppy trail pony. Whether you're chasing EWS dreams or just a weekend afternoon escape, it will bring out the best in you. So 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.

AVAILABLE COLORS:

Deep Purple

Glacier White

Graphite Grey

SELECT BUILD

$3,499

$2,799 USD

$4,799

$3,699 USD

$4,599

$3,699 USD

$4,999

$3,999 USD

$6,699

$4,999 USD

$6,499

$4,999 USD

$7,699

$5,799 USD

$7,999

$6,399 USD

$9,999

$8,499 USD

$2,199

$1,499 USD

$3,599

$2,699 USD

SELECT SIZE/COLOR

X-Small

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X-Small

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X-Small

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Small

Ships appx: 02/08/26

Small

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Small

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Medium

Ships appx: 02/08/26

Medium

Ships appx: 02/08/26

Medium

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Large

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Large

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Large

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X-Large

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X-Large

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X-Large

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XX-Large

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XX-Large

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XX-Large

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$3,499

$2,799 USD

IN STOCK: Ships within 2 business days

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

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 during check out.

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PRICE

$3,499

$2,799 USD

$4,799

$3,699 USD

$4,599

$3,699 USD

$4,999

$3,999 USD

$6,699

$4,999 USD

$6,499

$4,999 USD

$7,699

$5,799 USD

$7,999

$6,399 USD

$9,999

$8,499 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

29" (X-Small 27.5")

29"

29" (X-Small 27.5")

REAR SHOCK

RockShox SuperDeluxe Base
(205x60mm)

RockShox Super Deluxe Select+
(205x60mm)

RockShox Super Deluxe Select
(205x60mm)

RockShox Super Deluxe Ultimate
(205x60mm)

Fox Float X Performance Elite
(205x60mm)

Fox Float X Factory
(205x60mm)

RockShox Super Deluxe Ultimate
(205x60mm)

FORK

RockShox Psylo Gold RC
(160mm)

RockShox Lyrik Select+
(160mm)

RockShox Lyrik Base
(160mm)

RockShox Lyrik Ultimate
(160mm)

Fox Float 36 Grip X2 Performance Elite
(160mm)

Fox Float 36 Grip X2 Factory
(160mm)

HEADSET

FSA No.57E

**Not Included**

STEM

RaceFace Aeffect R (40mm)

ANVL Swage (40mm)

RaceFace Aeffect R (40mm)

ANVL Swage (40mm)

HANDLEBAR

RaceFace Chester
XS/SM (800x20mm)
MD/LG/XL/XXL (800x35mm)

ANVL Mandrel Alloy 35
XS/SM (800x20mm)
MD/LG/XL (800x30mm)
XXL (800x40mm)

RaceFace Chester
XS/SM (800x20mm)
MD/LG/XL/XXL (800x35mm)

ANVL Mandrel Alloy 35
XS/SM (800x20mm)
MD/LG/XL (800x30mm)
XXL (800x40mm)

OneUp Carbon Bar
XS/SM (800x20mm)
MD/LG/XL/XXL (800x35mm)

OneUp Carbon Bar
SM (800x20mm)
MD/LG/XL (800x35mm)

GRIPS

ODI Elite Flow Lock-On

SADDLE

SDG Bel Air 3

SDG Bel Air 3 LUX

SEATPOST

SDG Tellis
XS (125mm)
SM (150mm)
MD (170mm)
LG (200mm)
XL/XXL (230mm)

OneUp Dropper Post
XS (120mm)
SM (150mm)
MD (190mm)
LG (210mm)
XL/XXL (240mm)

SDG Tellis
XS (125mm)
SM (150mm)
MD (170mm)
LG (200mm)
XL/XXL (230mm)

OneUp Dropper Post
XS (120mm)
SM (150mm)
MD (190mm)
LG (210mm)
XL/XXL (240mm)

Fox Transfer Factory
XS (120mm)
SM (150mm)
MD (180mm)
LG (210mm)
XL/XXL (240mm)

Fox Transfer Factory
SM (150mm)
MD (180mm)
LG (210mm)
XL (240mm)

BRAKES

Shimano Deore M6120 4 Piston

SRAM Maven Bronze

Shimano XT M8120 4 Piston

Shimano Deore M6120 4 Piston

SRAM Maven Bronze

Shimano XT M8120 4 Piston

Shimano XT BR-M8220 4 Piston

SRAM Maven Silver

Shimano XTR BR-M9220 4 Piston

ROTORS

Shimano RT66 (203mm)

SRAM Centerline (200mm)

Shimano RT86 (203mm)

Shimano RT66 (203mm)

SRAM Centerline (200mm)

Shimano RT86 (203mm)

SRAM HS2 (200/180mm)

Shimano RT-MT905 (203mm)

SHIFTER

Shimano Deore M6100 iSpec EV

SRAM Eagle 90 MMX

Shimano XT M8100 iSpec EV

Shimano Deore M6100 iSpec EV

SRAM Eagle 90 MMX

Shimano XT M8100 iSpec EV

Shimano XT Di2 SW-M8250

SRAM POD Ultimate Bridge MMX

Shimano XTR Di2 SW-M9250

DERAILLEUR

Shimano Deore M6100 SGS 12sp

SRAM Eagle 90

Shimano XT M8100 SGS 12sp

Shimano Deore M6100 SGS 12sp

SRAM Eagle 90

Shimano XT M8100 SGS 12sp

Shimano XT Di2 RD-M8250

SRAM XO AXS Eagle Transmission

Shimano XTR Di2 RD-M9250

CASSETTE

Shimano Deore M6100 (10-51t)

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

Shimano XT M8100 (10-51t)

Shimano Deore M6100 (10-51t)

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

Shimano XT M8100 (10-51t)

Shimano XT CS-M8200-12
(10-51t)

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

Shimano XTR CS-M9200-12
(10-51t)

CHAIN

Shimano Deore M6100

SRAM GX Eagle Transmission

Shimano XT M8100

Shimano Deore M6100

SRAM GX Eagle Transmission

Shimano XT M8100

Shimano XT CN-M8100

SRAM XO Eagle Transmission

Shimano XTR CN-M9100

CRANK

Shimano Deore M6100
(30t/165mm)

SRAM Eagle 90 DUB
(30t/165mm)

Shimano XT M8100
(30t/165mm)

Shimano Deore M6100
(30t/165mm)

SRAM Eagle 90 DUB
(30t/165mm)

Shimano XT M8100
(30t/165mm)

Shimano XT FC-M8200
(30t/165mm)

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

Shimano XTR FC-M9220
(30t/165mm)

RIMS

WTB ST i30

DT Swiss M 1900 Spline 30

WTB ST i30

DT Swiss M 1900 Spline 30

DT Swiss XM 481

We Are One Triad

SPOKES

Pillar Double Butted

DT Swiss Champion

Pillar Double Butted

DT Swiss Champion

DT Swiss Competition

Sapim Race

HUBS

Novatech D791SB/D902SB

DT Swiss 370 Ratchet LN

Novatech D791SB/D902SB

DT Swiss 370 Ratchet LN

DT Swiss 350 Classic DEG

Industry Nine Hydra

TIRE/FRONT

Maxxis Assegai EXO/TR (2.5)

Maxxis Assegai 3C EXO+ (2.5)

Maxxis Assegai EXO/TR (2.5)

Maxxis Assegai 3C EXO+ (2.5)

TIRE/REAR

Maxxis Minion DHRII EXO/TR (2.4)

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

Shimano Di2 Battery Charger
Tubeless Valves & Sealant

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

Shimano Di2 Battery Charger
Tubeless Valves & Sealant

Fidlock Twist Bike Base

COLOR OPTIONS

	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

	Deep Purple
	Graphite Grey
	Glacier White

	Glacier White
	Graphite Grey
	Deep Purple

	Deep Purple
	Graphite Grey
	Glacier White

Glacier White

	Deep Purple
	Graphite Grey
	Glacier White

	Deep Purple
	Graphite Grey
	Glacier White

WEIGHT

36.4 lbs/16.51 kg (Size MD)

34.4 lbs/15.58 kg (Size MD)

33.6 lbs/15.21 kg (Size MD)

32.9 lbs / 14.92 kg (Size MD)

33.2 lbs/15.07 kg (Size MD)

32.0 lbs/14.53 kg (Size MD)

9.91 lbs / 4.50 kg (Size MD)

7.41 lbs / 3.36 kg (Size MD)

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.

Speed Balanced Geometry SBG ensures the bike maintains low speed agility, front wheel traction, and proper rider weight balance while actually increasing confidence in steep terrain and at high speeds. With SBG, a slacker head tube angle is combined with a reduced offset fork standard, preventing the front wheel from being too far in front of the rider. This improves front to rear weight distribution on the bike, which is often out of balance on long and slack bikes. One of SBG's greatest benefits is that it creates a confident steering feel that adapts to wheel speed. More stability when going fast, more agility on technical slow speed maneuvering as well as improved traction, control and confidence for any skill level of rider.
	SM	MD	LG	XL	XXL

A. REACH	420	450	476	501	521

B. STACK	613	622	631	640	649

C. EFFECTIVE TT LENGTH	552	585	613	641	665

D. SEAT TUBE LENGTH	350	390	430	460	490

E. EFFECTIVE ST ANGLE	78.2°	77.5°	76.9°	76.4°	76.0°

SADDLE HEIGHT FOR EFFECTIVE ST ANGLE	600	660	720	780	820

ACTUAL ST ANGLE	70.8°	70.8°	70.8°	70.8°	70.8°

SEAT TUBE OFFSET AT BB	87	87	87	87	87

F. HEAD TUBE LENGTH	100	110	120	130	140

G. HEAD TUBE ANGLE	63.6°	63.6°	63.6°	63.6°	63.6°

H. CHAINSTAY LENGTH	440	440	440	440	440

I. WHEELBASE	1199	1233	1263	1292	1316

J. BOTTOM BRACKET DROP	29	29	29	29	29

K. ESTIMATED BB HEIGHT	346	346	346	347	347

L. STAND OVER HEIGHT	671	688	700	712	722

M. FORK OFFSET	43	43	43	43	43

Frame Specifications

REAR TRAVEL:	150mm (Compatible with 140mm)

FRONT TRAVEL:	160mm

WHEEL SIZE:	29"

SIZES:	SM, MD, LG, XL, XXL

FRAME BEARINGS:	2x 6903, 2x 6902, 4x 6802, 2x 3802, 2x 6900

FORK AXLE TO CROWN:	574mm (Includes headset)

FORK OFFSET:	42-44mm

REAR SHOCK SIZE:	205mm x 62.5mm (Compatible with 205mm x 57.5mm)

SHOCK HARDWARE:	Trunnion Mount Top / 25mm x 8mm Bottom

HEADSET (TOP):	44mm Zero Stack

HEADSET (BOTTOM):	56mm Zero Stack

BB SHELL:	73mm BSA Threaded

CHAINLINE:	52mm

REAR BRAKE MOUNT:	180mm Post Mount, Max Rotor Size 203mm

REAR AXLE:	Carbon: Syntace X12 148, 1.0mm Thread Pitch Alloy: Transition Axle For UDH, 12mm x 148mm Spacing

ISCG TABS:	ISCG05

SEATPOST DIAMETER:	31.6mm

SEAT CLAMP:	Carbon: 37.0mm Alloy: 34.9mm

MAX SEATPOST INSERTION:	Carbon: Small 220mm \| Medium 250mm \| Large 290mm \| XL 320mm \| XXL 350mm Alloy: Small 240mm \| Medium 270mm \| Large 310mm \| XL 335mm \| XXL 360mm

MAX CHAINRING SIZE:	32T Standard Single Ring

MAX TIRE SIZE:	29 x 2.6

REAR SHOCK SAG:	150mm/62.5mm: 16-20mm (26-32%) 140mm/57.5mm: 15-19mm (26-33%)

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OVERVIEW/BUY

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FRAME SPECS

FAQ'S

SUPPORT/SETUP

Transition Sentinel Enduro/Trail Mountain Bike

OVERVIEW/BUY

BUILD SPECS

SBG GEOMETRY

FRAME SPECS

FAQ'S

SUPPORT/SETUP