To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
If you're looking for the best parts you can get for a great price, the Sentinel Alloy GX will tick every box.
If you're looking for the best parts you can get for a great price, the Sentinel Alloy GX will tick every box.
Transition

2019 Transition Sentinel Alloy GX Full Suspension Mountain Bike in Red

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

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged. In the event an item is returned to ourselves in an unsuitable condition, we may have to return the item or offer a partial refund. Unless the return is due to a faulty product or an incorrect delivery on our part you will have to cover the cost of the return. If you believe that we should be covering the cost of the return please contact us in advance to discuss the available options.

In line with the customer rights act 2015 if you receive an item that is faulty, of un-satisfactory quality, unusable or that differs from how the product is described you are entitled to return the item for a full refund within 30 days of purchase.

Small Items - Parts & Accessories

Include the returns form and send it to us with the delivery company of your choosing - easy peasy!

Larger Items - Bikes / Bulky Items

If you wish to return bikes or bulky items such as forks or turbo trainers please contact our Returns Department to arrange a special courier collection. Contact us on our email address websales@99bikes.co.uk We can arrange collection for you from your home or work address, using our couriers ( You may be required to cover postages costs )

* Bulky Items Include - Bikes - Wheels/wheelsets - Turbo Trainers - Framesets - Forks - Groupsets - Car racks - Child Seats

Warranty Claims

Please contact us prior to returning so we can ensure the fastest suitable resolution for you: websales@99bikes.co.uk. We also ask that you contact us before having a 3rd party undertake work on an item purchased from 99 Bikess. Any work carried out without 99 Bikes consent will not be eligible for reimbursement and may void future warranty claims for that item.

2019 Transition Sentinel Alloy GX Full Suspension Mountain Bike in Red

Season:2019

Brand:Transition

Code:DERrioNtoniPDER.XG.YLA.TN

Transition know suspension performance is king so they give you the same Fox fork and rear shock we spec on their top of the line Sentinel Carbon XO1.

The drivetrain is GX Eagle with a massive gear range that is the new standard for performance and value.

Along with top of the line suspension, they give you killer 4 piston Code RSC brakes that are a crowd favorite at Transition.

They finish the build with rock-solid Stans Flow S1 Team complete wheelset and the best Maxxis Minion 3C tires you can buy.

The Sentinel Alloy GX is a true riders bike that wants top performing parts that can appreciate a tried and true alloy frameset that can charge all day.

 

https://www.transitionbikes.com/Sizing.cfm

 

FORK AXLE TO CROWN 571mm

FORK OFFSET 42mm (Rockshox) / 44mm (Fox)

REAR SHOCK SIZE 205mm x 57.5mm

REAR SHOCK HARDWARE Trunion Bearing Mount Top / 25mm x 8mm Bottom

BEARINGS Full EnduroMax Sealed Cartridge Bearings

HEADSET 44mm Zero Stack (Top) / 56mm Zero Stack (Bottom)

BOTTOM BRACKET 73mm BSA Threaded

REAR BRAKE 180mm Post Mount

REAR AXLE Syntace X12 148

FRONT DERAILLEUR No Support

ISCG TABS ISCG05

SEATPOST DIAMETER 31.6mm

MAX SEATPOST INSERTION ALLOY Small 190mm, Medium 230mm, Large 270mm, XL/XXL 300mm

MAX SEATPOST INSERTION CARBON Small 190mm, Medium 225mm, Large 245mm, XL 245mm

SEAT CLAMP Alloy 34.9mm/Carbon 37mm

MAXIMUM CHAINRING 34t

MAXIMUM TIRE 29 x 2.5

SAG SETUP 18-20mm (32-35%)

FRAME WEIGHT (Medium with Shock/Axle/Hardware) Carbon 7.05 lbs. - 3.2 Kg | Alloy 9.61 lbs. - 4.36 Kg

Technical Information

https://www.transitionbikes.com/Sizing.cfm

 

FORK AXLE TO CROWN 571mm

FORK OFFSET 42mm (Rockshox) / 44mm (Fox)

REAR SHOCK SIZE 205mm x 57.5mm

REAR SHOCK HARDWARE Trunion Bearing Mount Top / 25mm x 8mm Bottom

BEARINGS Full EnduroMax Sealed Cartridge Bearings

HEADSET 44mm Zero Stack (Top) / 56mm Zero Stack (Bottom)

BOTTOM BRACKET 73mm BSA Threaded

REAR BRAKE 180mm Post Mount

REAR AXLE Syntace X12 148

FRONT DERAILLEUR No Support

ISCG TABS ISCG05

SEATPOST DIAMETER 31.6mm

MAX SEATPOST INSERTION ALLOY Small 190mm, Medium 230mm, Large 270mm, XL/XXL 300mm

MAX SEATPOST INSERTION CARBON Small 190mm, Medium 225mm, Large 245mm, XL 245mm

SEAT CLAMP Alloy 34.9mm/Carbon 37mm

MAXIMUM CHAINRING 34t

MAXIMUM TIRE 29 x 2.5

SAG SETUP 18-20mm (32-35%)

FRAME WEIGHT (Medium with Shock/Axle/Hardware) Carbon 7.05 lbs. - 3.2 Kg | Alloy 9.61 lbs. - 4.36 Kg

Sizing Information
Professional Opinion
Product Reviews
Write a review
0 As rated by 0 customers

Write a review for 2019 Transition Sentinel Alloy GX Full Suspension Mountain Bike in Red

Your name
Your email address
How would you rate it?
Would you recommend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about 2019 Transition Sentinel Alloy GX Full Suspension Mountain Bike in Red
Ask a question
Question(s) asked regarding 2019 Transition Sentinel Alloy GX Full Suspension Mountain Bike in Red

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
Home Mountain Biking Bikes Transition Mountain Bikes