To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
## Send-it-all on the new Sentinel*A bike tht says yes to every trail, every ride and begs for more.*The Sentinel rides the lines between planted bottomless ..
## Send-it-all on the new Sentinel*A bike tht says yes to every trail, every ride and begs for more.*The Sentinel rides the lines between planted bottomless ..
Transition

Transition Sentinel Alloy MTB Complete Bike White

£3,499.00
Earn
in Customer Rewards when you buy this item today
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

Your statutory rights are not affected by our Returns Policy. To the extent that any provision in our Returns Policy conflicts with your statutory rights, your statutory rights will prevail and the particular offending provision in our Returns Policy will be deemed inapplicable.


Returns and refunds

If you are unhappy with your item, please let us know. Our Returns Policy gives you 30 days to return or exchange an item bought with a valid receipt. If 30 days have gone by since your purchase, we cannot offer you a refund or exchange.To be eligible for a refund or exchange, goods must be returned in a re-saleable condition. That means your item must be unused and in the same condition that you received it. The item must be in the original packaging and returned with any accessories, labels and “free gifts” or bonus items.

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

Under the Consumer Rights Act of 2015 you have an early right to reject goods that are unsatisfactory quality, unfit for purpose or not as described, and get a full refund.

But this right is limited to 30 days from the date you took ownership of the goods (this could be the date of purchase or the date the goods were delivered to you - whichever is later).

After the initial 30 days, you can't demand a full refund in the first instance, but you still have the right to a repair or replacement.

How to return your item(s):

  1. Put your unused, labelled item for return back in its original packaging.
  2. Fill in a Returns Form and include this with the item you are returning in a parcel.
  3. Send the parcel to the following address:

J's Cycles

Unit A Kirkgate Commercial Centre

Chantry Bridge

Wakefield

WF1 5DL


We will be in touch if there are any issues or when your return has been processed.

Refunds (if applicable)

Once your returned item 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 14 calendar days. If you paid for standard delivery of the goods, the cost of standard delivery will also be refunded.

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

- Any item not in its original condition, which is damaged or missing parts for reasons not due to our error

- Any item that is returned more than 30 days after delivery.


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 orders@jscycleshack.com

Returns Shipping

If the item is being returned as a result of our error (damaged, defective, wrong item sent etc), we will refund Royal Mail First Class or Standard Parcel postage costs.

If the item is being returned as a result of a change of mind, purchased the wrong size, item is not suitable, etc… the original cost of the outbound postage will be refunded by us, however the consumer is liable for all return costs incurred.

If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance as we cannot guarantee that we will receive your returned item.


International Refunds

All refunds are processed in GBP (£). J’s Cycle Shack will not refund any charges made by your bank for currency conversions or any customs charges incurred throughout the shipping/returns process. J’s Cycles will not refund differences caused by fluctuations in exchange rates. Shipping costs will be refunded as outlined in the paragraph above.


Guidelines For The Best Experience

Each returned item should be in it’s original packaging with the manufacturer’s labels attached. Please do not tape or attach labels directly to the retail packaging.

Retail store purchases should be returned to the original place of purchase. If this is not possible then follow our website returns policy and include proof of purchase.

We reserve the right to reject the return of goods which are not returned in accordance with our Returns Policy and we may request that you pay for the shipping of such goods back to you. Our returns policy does not affect your statutory rights.

A deduction will be made if the value of the goods has been reduced as a result of you handling the goods more than was necessary. The extent to which a customer can handle the goods is the same as it would be if you were assessing them in a shop.

Once we receive your goods, we will inspect and process them within 24hrs. Refunds will automatically be issued to the same payment method used to purchase the goods. As soon as your return has been processed by our team we will email you to let you know. In the unlikely event that you don’t receive this email within 10 days of posting your parcel to us, please get in touch with our Customer Service Team through our Contact us page or by calling 01977 67999.

If your purchase isn’t everything you expected it to be and you wish to exchange an item the simplest and quickest thing to do is place a brand new order for your new item and return the old one to us for a full refund.

Goods that cannot be returned:

There are some goods you can’t return if you simply change your mind, including:

  • CDs, DVDs or software if you’ve broken the seal on the wrapping
  • Perishable and other items that deteriorate rapidly such as food
  • Custom Built, tailor-made or personalised goods
  • Underwear and earrings
  • Used goods including footwear which have had cleats fitted

European Online Dispute Resolution (ODR)

For information regarding European ODR, please click here.


Right to cancel

In addition to our Returns Policy, under the Consumer Contracts Regulations of 2013, you have the right to cancel your order up to 14 days from the day you receive your goods if you are an online, mail or telephone order customer. You then have a further 14 days from the date you notify the retailer of your cancellation to return thegoods. The refund will include any standard delivery charges paid. You will be responsible for the cost of returning a cancelled order to us.

We will refund to you the price paid for the items and (unless you did not pay for delivery) the delivery charges that you paid up to a maximum amount of the cost of our standard delivery option. You will be refunded to your original method of payment within 14 calendar days of our receipt of the cancelled items or, if earlier, within 14 days from the day we receive proof of return from you. If we do not receive the cancelled items back, we may arrange to collect them from you at your cost.

To exercise your right to cancel, please email us at orders@jscycleshack.com with your order number, first and last name.

Transition Sentinel Alloy MTB Complete Bike White

Season:2025

Brand:Transition

Code:TR.CB.25.SENT.ALWHT

The Purebred Party Animal

The mixed wheel Patrol has a new haircut but is still down for anything and truly unapologetic when it comes to shredding trail.

Being one of the longest standing bikes in our lineup, it was the obvious choice to mix it up. Updated geometry to accommodate the 29" front / 27.5" rear wheels and revised suspension tune might just make you ride all day, and then all night.

Jibbing, jumping, pumping and hooting your way down the trail, the updated Patrol loves to party. From bike parks to your local trails, the Patrol isn't concerned with where you ride but rather how much fun you are having.

Technical Information

Frame Specifications

Rear Travel:150 mm (Compatible with 160mm)
Front Travel:160 mm
Wheel Size:29" or MX (XS 27.5 only)
Sizes:XS, SM, MD, LG, XL, XXL
Frame Bearings:2x 6903, 2x 6902, 4x 6802, 2x 3802, 2x 6900
Fork Axle To Crown:578 mm (Includes headset) (XS 560 mm)
Fork Offset:44 mm (XS 37 mm)
Rear Shock Size:205 × 60 mm (compatible with 205 × 65 mm)
Shock Hardware:Trunnion Mount Top / 30 × 8mm Bottom
Headset (Top):44 mm Zero Stack
Headset (Bottom):56 mm Zero Stack
BB Shell:73 mm BSA Threaded
Chainline:52 - 55 mm
Rear Brake Mount:180 mm Post Mount, Max Rotor Size 223 mm
Rear Axle:Transition Axle For UDH, 12 × 148 mm Spacing
ISCG Tabs:ISCG05
Seatpost Diameter:31.6 mm
Seat Clamp:Carbon: 37.0 mm
Alloy: 34.9 mm
Max Seatpost Insertion:Carbon: X-Small 245 mm | Small 245 mm | Medium 275 mm | Large 315 mm | X-Large 345 mm | XX-Large 375 mm
Alloy: X-Small 225 mm | Small 225 mm | Medium 260 mm | Large 310 mm | X-Large 325 mm | XX-Large 340 mm
Max Chainring Size:34T Standard Single Ring
Max Tyre Size:29" × 2.5"
Rear Shock Sag:150/60 mm: 16 - 20 mm (26 - 32%)


Alloy Deore

FrameSentinel Alloy 150mm
Wheel Size29" (X-Small 27.5")
Rear ShockRockShox SuperDeluxe Base
(205x60mm)
ForkRockShox Psylo Gold RC
(160mm)
HeadsetFSA No.57E
StemRaceFace Aeffect R (40mm)
HandlebarRaceFace Chester
XS/SM (800x20mm)
MD/LG/XL/XXL (800x35mm)
GripsODI Elite Flow Lock-On
SaddleSDG Bel Air 3
SeatpostSDG Tellis
XS (125mm)
XS (125mm)
SM (150mm)
MD (170mm)
LG (200mm)
XL/XXL (230mm)
BrakesShimano Deore M6120 4 Piston
RotorsShimano RT66 (203mm)
ShifterShimano Deore M6100 iSpec EV
DerailleurShimano Deore M6100 SGS 12sp
CassetteShimano Deore M6100 (10-51t)
ChainShimano Deore M6100
CrankShimano Deore M6100
(30T / 165 mm)
RimsWTB ST i30
SpokesPillar Double Butted
HubsNovatech D791SB/D902SB
Tyre/FrontMaxxis Assegai 3C EXO/TR (2.5)
Tyre/RearMaxxis Minion DHRII 3C EXO/TR (2.4)
IncludedFidlock Twist Bike Base
Tubeless Valves & Sealant
Color OptionsDeep Purple
Graphite Grey
Glacier White
Weight36.4 lbs | 16.51 kg (Size MD)
Sizing Information
Professional Opinion
Product Reviews
Write a review
0 As rated by 0 customers

Write a review for Transition Sentinel Alloy MTB Complete Bike White

Your name
Your email address
How would you rate it?
Would you recommend this product?
Let others know your opinion
Submit Review Close
Home Mountain Bikes Transition Mountain Bikes