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The hard charging all-rounder.
The hard charging all-rounder.
Transition

Transition Sentinel Alloy NX Full-Suspension Mountain Bike - Black Powder

£3,779.10 £4,199.00 10% off
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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns - please contact us if you need to return any item.

Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.


To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

Additional non-returnable items:
Gift cards
Downloadable software products
Some health and personal care items

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted: (if applicable)

Book with obvious signs of use
CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened.
Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
Any item that is returned more than 30 days after delivery
Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact us at [email protected].

Sale items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Exchanges (if applicable)

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at [email protected] and send your item to: Forest Road, Hay on Wye, HR3 5EH, United Kingdom.

Gifts

If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.

Shipping

To return your product, you should mail your product to: Forest Road, Hay on Wye, HR3 5EH, United Kingdom.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

Transition Sentinel Alloy NX Full-Suspension Mountain Bike - Black Powder

Season:2023

Brand:Transition

Code:redwoPKLBXN.LA.TNES.22.BC

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 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.

Lifetime Warranty

At Transition Bikes we take pride in the quality of our products and are stoked to offer a lifetime warranty for the original owner and our stellar crash replacement program. We got your back so you don't have to worry about your bike.

All Carbon Construction

Full carbon frame made form premium Japanese Toray fibre with a tailored blend of 24T and 30T materials to create the right balance of frame stiffness, strength and impact toughness. Out unique latex coated EPS molding process allows for sharper frame lines and tighter edge radius control with maximum strength to weight ratio and less wasted.

Pivot Technology

Collet main pivot technology improves rear end stiffness and keeps your pivot hardware tight. Additional bearing shields prevent amin 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 fully integrated, flush-mounted rubber frame protection at all critical areas. In addition to downtube and seatstay protection, the ribbed chainstay protector features expanded coverage of the rear dropout pivot area.

Badass Bearings

We exclusively use EnduroMAX suspension pivot specific bearings in standard sizes that area 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

out 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 yur bike noise free, the rear derailleur cable is routed through guide tubes in 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 moises.

Press-in Headset

Our ZS44/ZS56 press in headset gives you the freedom to use angle adjust headsets if you feel the need 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 your water bottle clean inside the front triangle so you can keep hydrated without worrying about mud making it to your mouth.

Technical Information
  • Frame
    Sentinel Alloy 150mm
  • Rear Shock
    Fox Float X Performance 2 Position
  • Fork
    Fox Float 36 Rhythm
    160mm Travel/44mm Offset
  • Headset
    FSA No.57E
  • Stem
    RaceFace Aeffect R (40mm)
  • Handlebar
    RaceFace Chester 35
    SM/MD (780x20) LG/XL/XXL (780x35)
  • Grips
    Sensus Lite
  • Saddle
    ANVL Forge Cromo
  • Seatpost
    OneUp Dropper Post
    SM (150mm) MD (180mm) LG/XL/XXL (210mm)
  • Brakes
    SRAM Code R
  • Rotors
    SRAM Centerline (200mm)
  • Shifter
    SRAM NX Eagle MMX
  • Derailleur
    SRAM NX Eagle
  • Cassette
    SRAM PG 1230 (11-50t)
  • Chain
    SRAM NX Eagle
  • Crank
    SRAM Descendent 6k DUB (30t/170mm)
  • Rims
    Stans Flow D
  • Spokes
    Pillar Double Butted
  • Hubs
    Novatech D791SB/D902SB
  • Tyre/Front
    Maxxis Assegai 3C EXO+ (29x2.5)
  • Tyre/Rear
    Maxxis Minion DHRII 3C EXO+ (29x2.4)
  • Included
    Tubeless Valves & Stans Sealant (6oz)
  • Weight
    35.8 lbs / 16.23kg (Size MD)
Sizing Information

Sentinel Geometry

SMMDLGXLXXL
A. Reach420mm450mm476mm501mm521mm
B. Stack613mm622mm631mm640mm649mm
C. Effective Tt Length552mm585mm613mm641mm665mm
D. Seat Tube Length350mm390mm430mm460mm490mm
E. Effective St Angle78.2°77.5°76.9°76.4°76.0°
Saddle Height For Effective ST Angle600mm660mm720mm780mm820mm
Actual ST Angle70.8°70.8°70.8°70.8°70.8°
Seat Tube Offset AT BB87mm87mm87mm87mm87mm
F. Head Tube Length100mm110mm120mm130mm140mm
G. Head Tube Angle63.6°63.6°63.6°63.6°63.6°
H. Chainstay Length440mm440mm440mm440mm440mm
I. Wheelbase1199mm1233mm1263mm1292mm1316mm
J. Bottom Bracket Drop29mm29mm29mm29mm29mm
K. Estimated BB Height346mm346mm346mm347mm347mm
L. Stand Over Height671mm688mm700mm712mm722mm
M. Fork Offset43mm43mm43mm43mm43mm
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