The Hard Charging All-Rounder

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

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 manoeuvres 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.

Specifications
Frame	Sentinel Carbon 150mm
Wheel Size	29"
Rear Shock	Fox Float X2 Factory 2 Position (205x62.5mm)
Weight	7.0 lbs/3.20kg (Size MD w/ Shock)

Lifetime Warranty
At Transition Bike we take pride in the quality of our products and are stocked to offer a lifetime warranty for the original owner and our stellar crash replacement program. We've got your back so you don't have to worry about your bike.
Frame Material
The Sentinel Carbon uses premium Japanese Toray fibre using a unique latex coated EPS moulding process to create tighter edge radius control using less material. The Sentinel alloy features a frame made from tough and dependable heat treated 6061 aluminium to strike the right balance of strength, durability and ride quality.
Pivot Technology
Collet main pivot technology improves rear end stiffness and keeps your pivot hardware tight. Additional bearing shields prevent main pivot bearing contamination when washing your bike or riding in wet conditions.
Frame Protection
We keep your bike rides quiet and your frame safe from damage with filly integrated, flush mounted rubber frame protection at all critical areas. In addition to downtube and seatstay protection, the ribbed chainstay protector features expnaded coverage of the rear dropout pivot area.
Enduro Max Bearings
We exclusively use Enduro Max suspension pivot specific bearings in standard sizes that are readily available worldwide. Dual bearings are used at the dropout pivots for frame stiff ness and additional c-clips local the rocker bearings in place under torsional loads.
Gear Accessory Mount
Our underside top-tube accessory mount allows you to carry a spare tube or other goodies safely on your frame in case you are looking to ditch the backpack.
Mega Seatpost Insertion
Dropper posts keep getting longer so we combine short seat tube lengths with mega seatpost insertion to help get your saddle completely out of the way.
Tyre Clearance
Ample clearance for mud and tyres up to 2.6" width.
User Friendly Cable Routing
to simplify maintenance and keep your bike noise free, the rear derailleur cable is routed through guide tubes in the the front triangle and chainstay.
Threaded BB
A standard 73mm threaded bottom bracket shell makes crankset maintenance hassle-free and prevents unwanted press-fit BB related noises.
Press in Headset
Our ZS44/ZS56 press in headset gives you the freedom to use angle adjust headsets if you feel the nee to make your bike a touch slacker or a touch steeper.
Angleset headset does not come with framesets or complete bikes.
Water Bottle Compatibility
We keep you water bottle clean inside the front triangle so you can keep hydrated worrying about mud making it to your mouth.

Speed Balance 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 all new 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 manoeuvring as well as improved traction, control and confidence for any skill level of rider.

SBG

	SM	MD	LG	XL	XXL
A. REACH	420mm	450mm	476mm	501mm	521mm
B. STACK	613mm	622mm	631mm	640mm	649mm
C. EFFECTIVE TT LENGTH	552mm	585mm	613mm	641mm	665mm
D. SEAT TUBE LENGTH	350mm	390mm	430mm	460mm	490mm
E. EFFECTIVE ST ANGLE	78.2°	77.5°	76.9°	76.4°	76.0°
SADDLE HEIGHT FOR EFFECTIVE ST ANGLE	600mm	660mm	720mm	780mm	820mm
ACTUAL ST ANGLE	70.8°	70.8°	70.8°	70.8°	70.8°
SEAT TUBE OFFSET AT BB	87mm	87mm	87mm	87mm	87mm
F. HEAD TUBE LENGTH	100mm	110mm	120mm	130mm	140mm
G. HEAD TUBE ANGLE	63.6°	63.6°	63.6°	63.6°	63.6°
H. CHAINSTAY LENGTH	440mm	440mm	440mm	440mm	440mm
I. WHEELBASE	1199mm	1233mm	1263mm	1292mm	1316mm
J. BOTTOM BRACKET DROP	29mm	29mm	29mm	29mm	29mm
K. ESTIMATED BB HEIGHT	346mm	346mm	346mm	347mm	347mm
L. STAND OVER HEIGHT	671mm	688mm	700mm	712mm	722mm
M. FORK OFFSET	43mm	43mm	43mm	43mm	43mm

Giddy Up Suspension

We want to make it as easy as possible to experience great rear suspension performance. The GiddyUp suspension system is designed to behave intuitively across a broad range of setup. Because, we get it, sometimes you just want to grab your bike and GiddyUp, without checking your setup. When you do, it will always feel good.

We did this by balancing a 25% progressive leverage curve with a consistent linear rate of change. Anti-squat is tuned to enhance pedalling performance and acceleration. Overall chain growth is moderate and reduces after sag so chain tension doesn't get in the way of the suspension working.

This translates to killer small bump compliance and great mid-stroke support that gradually transitions into an end of stroke ramp that is subtle, yet supportive. The amount of consistent progression is carefully optimized for both air and coil shocks. Riders are able to add or remove volume spacers in air shocks to suite their individual riding style and there is no compromise to bottom out support with coil shocks. The Sentinel has 150mm of rear wheel travel when used with the supplied 205mm x 62.5mm stroke shock. It is also possible to install a shorter, 205mm x 57.5mm stroke shock, to decrease the rear wheel travel to 140mm.

A wide usable sag range of 25 - 35% allows the rider to tune the feel of the bike; from poppy and playful, to planted for ploughing. Wherever you end up, you can focus on the trail without remotes, levers or knobs. Just grab your bike and GiddyUp.

Trail Frames

Santa Cruz 5010 5 CC Frame 2023

Santa Cruz Hightower 3 CC Frame 2024

Juliana Roubion 4.1 CC Frame 2024

Juliana Furtado 5 CC Frame 2024

Juliana Joplin 4 CC Frame 2024

Santa Cruz 5010 5 CC Frame 2024

Transition Sentinel Carbon Frame

Transition Smuggler Carbon Frame

Norco Sight C Frame

Norco Optic C Frame

Specialized Stumpjumper 15 S-Works Frame

Santa Cruz Bronson 5 CC Frame 2026