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The Trek Checkpoint ALR Frame Set is a versatile, durable aluminium gravel base with comfort-focused geometry, big tyre clearance and bikepacking-ready mounts.
The Trek Checkpoint ALR Frame Set is a versatile, durable aluminium gravel base with comfort-focused geometry, big tyre clearance and bikepacking-ready mounts.
Trek

Trek Checkpoint ALR Frame Set Gen 3 2026 in Bronze Age

£625.00
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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
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Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Trek Checkpoint ALR Frame Set Gen 3 2026 in Bronze Age

Season:2026

Brand:Trek

Code:57659BZ

The Checkpoint ALR Frame Set is the perfect starting point for your dream aluminium gravel bike. Its 300 Series Alpha Aluminum frame features Gravel Endurance geometry to keep you comfortable through long miles, and a full carbon fork keeps things lightweight. Build it up as a bikepacking rig or spec it for your ultimate alloy gravel race bike, the world is your oyster.

Key Features & Benefits:

  • Suspension Compatability:Now compatible with 40mm travel suspension fork (all sizes except XS). Tested compatible models include: Rockshox Rudy/Rudy Ultimate, 30mm or 40mm travel and the Fox 32 Taper-Cast, 40mm travel
  • Clearance for 50 mm Tyres:Means that you can add extra traction and cushion for rowdy gravel roads.
  • Haul it All:Features the same top tube, frame, downtube, fork, fender, and rear rack mounts of its carbon counterpart. Frame is now better optimized to store bigger volume bottles, even when the new Bontrager Adventure Half Framebag or Adventure Triangle Bag are mounted on the frame.

Full Specification:

  • Frame:300 Series Alpha Aluminium, Internal cable routing, 3S chain keeper, T47, UDH, rack and mudguard mounts, integrated frame bag mounts, flat-mount disc, 142x12 mm chamfered thru axle
  • Fork:Checkpoint full carbon, tapered carbon steerer, fender mounts, rack mounts, flat mount disc, 12x100mm chamfered thru axle
  • Max Chainring Size:1x:44 2x: 46/30
  • Front Skewer:Bontrager Switch chamfered thru axle, removable lever
  • Rear Skewer:Bontrager Switch chamfered thru axle, removable lever
  • Max Tyre Size:50 mm without mudguards, 42 mm with mudguards
  • Max Brake Rotor Size:Max brake rotor sizes: 180mm front and rear
  • Weight:2.6kg - ML
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Sizing Chart for Trek Checkpoint Gen 3

This chart can give a recommendation on which size may be best for you, however for the best results, please contact us or visit your local Balfe’s store for a personal consultation and test ride.
SizeRider Height (cm)Rider Height (")Inseam (cm)Inseam (")
XS143 - 158 cm4'8" - 5'2"67 - 74 cm26" - 29"
S (49cm)158 - 164 cm5'2" - 5'5"74 - 77 cm29" - 30"
M (52-54cm)164 - 177 cm5'5" - 5'10"77 - 83 cm30" - 33"
ML (56cm)177 - 188 cm5'10" - 6'2"83 - 88 cm33" - 35"
L (58cm)188 - 194 cm6'2" - 6'4"88 - 91 cm35" - 36"
XL (61cm)194 - 203 cm6'4" - 6'8"91 - 95 cm36" - 37"

Geometry for Trek Checkpoint Gen 3


Frame size letterXSSMMLLXL
Wheel size700c700c700c700c700c700c
A — Seat tube495254565861
B — Seat tube angle74.1°73.7°73.2°72.8°72.5°72.1°
C — Head tube length9.611.71416.218.120.1
D — Head angle71.2°71.6°71.8°72.2°72.3°72.6°
E — Effective top tube53.654.856.85859.260.4
G — Bottom bracket drop7.87.87.67.67.47.4
H — Chainstay length43.543.543.543.543.543.5
I — Offset4.94.94.94.94.94.9
J — Trail7.47.176.76.66.5
K — Wheelbase102.5103.3104.1104.8105.8107
L — Standover73.576.578.980.982.985.9
M — Frame reach3838.539.139.740.240.8
N — Frame stack54.556.658.961.16365

This bike also has compatible accessories. They are:


Warranty Information for Trek:

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims.

2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers.

For full warranty policy please visit trekbikes.com

Sizing Information
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