Gravel / Cyclocross Bike
Trek Checkpoint ALR 4
SKU5304224
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.
OVERVIEW
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.
SPECS
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*Please note - spec applies to all sizes unless listed separately
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| Frameset | |
| 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
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| Fork |
Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle
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| Weight | |
| Weight |
56 - 9.80 kg / 21.61 lbs (with TLR sealant, no tubes)
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| Weight limit |
This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
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| Drivetrain | |
| Shifter |
SRAM Apex, 11 speed
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| Rear derailleur |
SRAM Apex 1, long cage, 42T max cog
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*Crank
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Size: 49
SRAM Apex 1, 40T, DUB Wide, 165mm length |
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Size: 52
SRAM Apex 1, 40T, DUB Wide, 170mm length |
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Size: 54, 56
SRAM Apex 1, 40T, DUB Wide, 172.5mm length |
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Size: 58, 61
SRAM Apex 1, 40T, DUB Wide, 175mm length |
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| Bottom bracket |
SRAM DUB, T47 threaded, internal bearing
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| Cassette |
SRAM PG-1130, 11-42, 11 speed
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| Chain |
SRAM PC-1130, 11 speed
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| Max chainring size |
1x: 44T, 2x: 50/34
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| Wheels | |
| Hub front |
Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
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| Skewer front |
Bontrager Switch thru axle, removable lever
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| Hub rear |
Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
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| Skewer rear |
Bontrager Switch thru axle, removable lever
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| Rim |
Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve
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| Spokes |
14g stainless steel, black
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| Tire |
Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40mm
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| Tire part |
Bontrager TLR sealant, 6oz
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| Rim strip | Bontrager TLR |
| Max tire size |
See service manual
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| Components | |
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*Saddle
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Size: 49, 52
Bontrager Verse Comp, steel rails, 155mm width |
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Size: 54, 56, 58, 61
Bontrager Verse Comp, steel rails, 145mm width |
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| Seatpost |
Bontrager alloy, 27.2mm, 12mm offset, 330mm length
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*Handlebar
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Size: 49
Bontrager Elite Gravel, 38cm width |
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Size: 52
Bontrager Elite Gravel, 40cm width |
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Size: 54, 56
Bontrager Elite Gravel, 42cm width |
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Size: 58, 61
Bontrager Elite Gravel, 44cm width |
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| Handlebar tape |
Bontrager Supertack Perf tape
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*Stem
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Size: 49
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 70mm length |
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Size: 52, 54
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length |
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Size: 56, 58
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length |
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Size: 61
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length |
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| Brake |
Tektro C550 mechanical disc brake, dual piston, flat mount
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| Brake rotor |
Tektro, centerlock, 160mm
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| Rotor size |
Max brake rotor sizes: 160mm front & rear
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We 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, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Prices shown are manufacturer's suggested retail prices.
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Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.
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SIZING GUIDE AND GEOMETRY
| Size | Rider Height | Inseam |
|---|---|---|
| 49 |
156 - 163 cm 5'1" - 5'4" |
74 - 77 cm 29" - 30" |
| 52 |
163 - 168 cm 5'4" - 5'6" |
76 - 79 cm 30" - 31" |
| 54 |
168 - 174 cm 5'6" - 5'9" |
78 - 82 cm 31" - 32" |
| 56 |
174 - 180 cm 5'9" - 5'11" |
81 - 85 cm 32" - 33" |
| 58 |
180 - 185 cm 5'11" - 6'1" |
84 - 87 cm 33" - 34" |
| 61 |
185 - 191 cm 6'1" - 6'3" |
86 - 90 cm 34" - 35" |
All measurements provided in cm unless otherwise noted.
| 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 |