Trek Checkpoint ALR 4
Details
Checkpoint ALR 4 is the best value gravel bike in the lineup. Kitted out with a 300 Series Alpha Aluminum frame, Checkpoint ALR 4 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Tons 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. Checkpoint ALR 4 is your ticket to turning every ride into an adventure.
The tech you get
A responsive 300 Series Alpha Aluminum frame, hidden cables that won't interfere with bags, integrated rack, fender, 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 tires for added comfort and traction.
The final word
If you're ready to start exploring every road while taking on the daily grind, 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 tires make for comfort and customization wherever the road, or lack thereof takes you.
Why you'll love it
- The durable and capable 300 Series Alpha Aluminum 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 tire clearance means you can use tires up to 45c 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
Features:
New progressive geometry
For quick, nimble handling that still keeps you stable and in control on rougher descents.
Tire clearance
Lots of clearance means you can run meatier tires (700x45mm or 27.5x2.1") for tackling chunkier gravel and terrain.
Tons of mounts
Integrated frame bag and fender mounts make it easy to carry gear and water.
| Frame size number | 49 cm | 52 cm | 54 cm | 56 cm | 58 cm | 61 cm |
|---|---|---|---|---|---|---|
| Wheel size | 700c | 700c | 700c | 700c | 700c | 700c |
| A — Seat tube | 49 | 52 | 54 | 56 | 58 | 61 |
| B — Seat tube angle | 74.1° | 73.7° | 73.2° | 72.8° | 72.5° | 72.1° |
| C — Head tube length | 9 | 10.5 | 12.5 | 14.5 | 16.5 | 19.5 |
| D — Head angle | 71.2° | 71.6° | 71.8° | 72.2° | 72.3° | 72.6° |
| E — Effective top tube | 54.1 | 55.5 | 57 | 58.4 | 59.7 | 61.7 |
| G — Bottom bracket drop | 7.8 | 7.8 | 7.6 | 7.6 | 7.4 | 7.4 |
| H — Chainstay length | 43.5 | 43.5 | 43.5 | 43.5 | 43.5 | 43.5 |
| I — Offset | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| J — Trail | 7.4 | 7.1 | 7 | 6.7 | 6.6 | 6.5 |
| K — Wheelbase | 102.5 | 103.3 | 104.1 | 104.8 | 105.8 | 107 |
| L — Standover | 73.5 | 76.5 | 78.9 | 80.9 | 82.9 | 85.9 |
| M — Frame reach | 39.3 | 39.9 | 40.3 | 40.7 | 41.1 | 41.7 |
| N — Frame stack | 53.8 | 55.3 | 57.1 | 59.2 | 60.9 | 63.9 |
| Stem length | 70 | 80 | 80 | 90 | 90 | 100 |
All measurements provided in cm unless otherwise noted.
| Frame Size | Rider Height (in) | Rider Height (cm) | Rider Inseam (in) | Rider Inseam (cm) |
|---|---|---|---|---|
| 49 | 5'1" - 5'4" | 156 - 163 | 29" - 30" | 74 - 77 |
| 52 | 5'4" - 5'6" | 163 - 168 | 30" - 31" | 76 - 79 |
| 54 | 5'6" - 5'9" | 168 - 174 | 31" - 32" | 78 - 82 |
| 56 | 5'9" - 5'11" | 174 - 180 | 32" - 33" | 81 - 85 |
| 58 | 5'11" - 6'1" | 180 - 185 | 33" - 34" | 84 - 87 |
| 61 | 6'1" - 6'3" | 185 - 191 | 34" - 35" | 86 - 90 |
Specs
| Pedals | Sold Separately |
|---|---|
| Fork | Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle |
| Hubs | Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle |
| Rims | Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve // Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21mm width, Presta valve |
| Stem | Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
| Chain | SRAM PC-1130, 11 speed |
| Frame | 300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle |
| Tires | Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40mm |
| Brakes | Tektro C550 mechanical disc brake, dual piston, flat mount // Tektro C550 mechanical disc brake, dual piston, flat mount |
| Rotors | Tektro, centerlock, 160mm |
| Saddle | Bontrager Verse Comp, steel rails, 145mm width |
| Spokes | 14g stainless steel, black |
| Crankset | SRAM Apex 1, 40T, DUB Wide, 172.5mm length |
| Seatpost | Bontrager alloy, 27.2mm, 12mm offset, 330mm length |
| Shifters | SRAM Apex, 11 speed // SRAM Apex, 11 speed |
| Handlebars | Bontrager Elite Gravel, 42cm width |
| Tape/Grips | Bontrager Supertack Perf tape |
| Bottom Bracket | SRAM DUB, T47 threaded, internal bearing |
| Rear Derailleur | SRAM Apex 1, long cage, 42T max cog |
| Cassette/Freewheel | SRAM PG-1130, 11-42, 11 speed |
* Subject to change without notice.