2022 Transition Sentinel Alloy NX Mountain Bike - Platinum Silver

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

The Transition Sentinel has a forgiving do-it-all attitude which 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, the Sentinel will bring out the best in you. This Transition is 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.

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 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 maneuvering as well as improved traction, control and confidence for any skill level of rider.

Frame Features

Lifetime Warranty
Transition take pride in the quality of products and offer a lifetime warranty for the original owner and an amazing crash replacement program.

Frame Material
The alloy version of the Transition Sentinel features a frame made from tough and depndable heat treated 6061 aluminium to strike the right balance of strength, durability and ride quality.

Pivot Technology
The Transition Sentinel uses Collet main pivot technology which improves rear end stiffness and keeps the pivot hardware tight. This Transition also has additional bearing shields to prevent main pivot bearing contamination when the bike is being washed or riding in wet conditions.

Frame Protection
The Transition Sentinel has a fully integrated, flush-mounted rubber frame protection at all criticla areas which keeps the mountain bike safe from damage. As well as the downtube and seatstay protection, the ribbed chainstay protector features expanded coverage of the rear dropout pivot area.

Enduromax Bearings
Every Transition bike exclusively use EnduroMax suspension pivot specific bearings in standard sizes that are readily available worldwide. Dual bearings are used at the dropout pivots for frame stiffness and additional c-clips lock the rocker bearings in place under torsional loads.

Gear Accessory Mount
The Transition Sentinel mountain bike has an underside top-tube accessory mount which is useful for carryng a space tube or other goodies safely in the frame.

Mega Seatpost Insertion
With dropper posts that keep getting longer, Transition Sentinel frames have combined short seat tube lengths with mega seatpost insertion to help keep the saddle completely out of the way.

Tyre Clearance
The Transition Sentinel frames have ample clearance for mud and tyres up to 2.6" width.

Threaded Bottom Bracket
The Sentinel has a standard 73mm threaded bottom bracket shell which makes crankset maintenance hassle-free and prevents unwanted press-fit bottom bracket related noises.

Press In Headset
Transitions very own ZS44/ZS56 press in headset gives freedom to use angle adjust headsets if needed to make the bike a little slacker or a touch steeper.
Angleset headset does not come with framesets or complete bikes

Water Bottle Compatibility
Water bottles can fit clean inside the Sentinels front triangle so theres no need to worry about mud making it to your mouth.

Giddyip Suspension Design

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 pedaling 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 plowing. Wherever you end up, you can focus on the trail without remotes, levers or knobs. Just grab your bike and GiddyUp.