Checkpoint ALR 4 is the best value gravel bike in the line-up. Kitted out with a 300 Series Alpha Aluminium frame, the Checkpoint ALR 4 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Loads of features like tubeless-ready wheels, a SRAM Apex 11-speed drivetrain and mechanical disc brakes make Checkpoint ALR 4 the perfect ride for ease of entry into the wide world of gravel.
It's right for you if...
You want to make the jump into the wide world of gravel and also want a fully capable bike for tackling century rides and the daily commute, too. The Checkpoint ALR 4 is your ticket to turning every ride into an adventure.
The tech you get
A responsive 300 Series Alpha Aluminium frame, hidden cables that won't interfere with bags, integrated rack, mudguard and frame bag mounts, a 1x11-speed SRAM Apex drivetrain for smooth shifting on punchy climbs and variable terrain, mechanical disc brakes for ease of stopping quick in all conditions, tubeless-ready rims and wide Bontrager GR1 Team Issue 700x40c gravel tyres for added comfort and traction.
The final word
If you're ready to start exploring every road while taking on the daily grind, the Checkpoint ALR 4 is your wallet-friendly ride. Versatility is the name of the game and a durable alloy frame, mounts for all kinds of accessories and wide tyres make for comfort and customisation wherever the road, or lack thereof, takes you
Why you'll love it
- The durable and capable 300 Series Alpha Aluminium frame makes for a fun, stable and responsive ride
- You get serious versatility that's suited for a wide variety of ride styles, from gravel and bikepacking to daily commutes
- Massive tyre clearance means you can use tyres up to 45 c for extra traction and stability in any conditions
- Fork, top tube and integrated frame mounts make it easy to carry gear and water
- Powerful mechanical disc brakes make stopping in all conditions easy
All measurements provided in cm unless otherwise stated.
| Frame size number | Wheel size | A — Seat tube | B — Seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack | Stem length |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 49 cm | 700c | 49.0 | 74.1° | 9.0 | 71.2° | 54.1 | 7.8 | 43.5 | 4.5 | 7.4 | 102.5 | 73.5 | 39.3 | 53.8 | 70.0 |
| 52 cm | 700c | 52.0 | 73.7° | 10.5 | 71.6° | 55.5 | 7.8 | 43.5 | 4.5 | 7.1 | 103.3 | 76.5 | 39.9 | 55.3 | 80.0 |
| 54 cm | 700c | 54.0 | 73.2° | 12.5 | 71.8° | 57.0 | 7.6 | 43.5 | 4.5 | 7.0 | 104.1 | 78.9 | 40.3 | 57.1 | 80.0 |
| 56 cm | 700c | 56.0 | 72.8° | 14.5 | 72.2° | 58.4 | 7.6 | 43.5 | 4.5 | 6.7 | 104.8 | 80.9 | 40.7 | 59.2 | 90.0 |
| 58 cm | 700c | 58.0 | 72.5° | 16.5 | 72.3° | 59.7 | 7.4 | 43.5 | 4.5 | 6.6 | 105.8 | 82.9 | 41.1 | 60.9 | 90.0 |
| 61 cm | 700c | 61.0 | 72.1° | 19.5 | 72.6° | 61.7 | 7.4 | 43.5 | 4.5 | 6.5 | 107.0 | 85.9 | 41.7 | 63.9 | 100.0 |
- Frame:
- 300 Series Alpha Aluminium, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and mudguard mounts, integrated frame bag mounts, flat-mount disc, 142x12 mm thru-axle
- Fork:
- Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
- Hub front:
- Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle
- Skewer front:
- Bontrager Switch thru axle, removable lever
- Hub rear:
- Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle
- Skewer rear:
- Bontrager Switch thru-axle, removable lever
- Rim:
- Bontrager Paradigm, Tubeless Ready, 24-hole, 21 mm width, Presta valve
- Spokes:
- 14 g stainless steel, black
- Tyre:
- Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700 x 40 c
- Tyre part:
- Bontrager TLR sealant, 180 ml/6 oz
- Rim strip:
- Bontrager Aeolus XXX rim strip
- Max tyre size:
- 700x45 mm / 650x2.10"
- Shifter:
- SRAM Apex, 11-speed
- Rear derailleur:
- SRAM Apex 1, long cage, 42T max cog
- Crank:
- Size: 49 SRAM Apex 1, 40T, DUB Wide, 165 mm length Size: 52 SRAM Apex 1, 40T, DUB Wide, 170 mm length Size: 54, 56 SRAM Apex 1, 40T, DUB Wide, 172.5 mm length Size: 58, 61 SRAM Apex 1, 40T, DUB Wide, 175 mm length
- Bottom bracket:
- SRAM DUB, T47 threaded, internal bearing
- Cassette:
- SRAM PG-1130, 11-42, 11-speed
- Chain:
- SRAM PC-1130, 11-speed
- Max. chainring size:
- 1x: 44T, 2x: 50/34
- Saddle:
- Size: 49, 52 Bontrager Verse Comp, steel rails, 155 mm width Size: 54, 56, 58, 61 Bontrager Verse Comp, steel rails, 145 mm width
- Seatpost:
- Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length
- Stem:
- Size: 49 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length Size: 52, 54 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length Size: 56, 58 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length Size: 61
- Brake:
- Tektro C550 mechanical disc brake, dual piston, flat mount
- Brake rotor:
- Tektro, CentreLock, 160 mm
- Rotor size:
- Max brake rotor sizes: 160 mm front and rear
- Weight:
- 56 - 9.80 kg / 21.61 lbs (with TLR sealant, no tubes)
- Availability:
- Please see above
- Please Note:
- Trek reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing
