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  4. Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red
Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red

They love it!

★★★★★
★★★★★
15 Reviews

Gravel Bike 2021 Trek Checkpoint ALR 4 Shimano GRX Red

Trek

★★★★★
★★★★★
- 15 Reviews

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Frame size / rider height

49 cm / 156-162 cm

Out of stock

52 cm / 162-169 cm

Out of stock

54 cm / 167-175 cm

Out of stock

56 cm / 173-181 cm

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58 cm / 180-185 cm

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61 cm / 185-191 cm

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Description

What size do you need?


Choosing the right sized bike depends on the type of bike, your height, your riding style, and your preference. A correct fitting bike will be more comfortable, more efficient and more fun to ride

Measure yourself accurately

To get started, measure your height and use the size chart available on each product description.

What to do if you are in between bike sizes?

If you are on the edge of two different bike sizes, don't worry, you'll probably be ok on either size (rather than thinking that one size will be awful and the other will fit). Indeed, bikes are adjustable: the seatpost can slide up and down, the saddle can move backwards and forwards and you can even switch out parts like the stem for different sized ones to help the bike fit better.

Finding out whether or not you should pick a bigger or a smaller frame is sometimes as simple as personal preference, but there are a few simple ways to work out which might suit best:
  • If you’re flexible, you might prefer a shorter head tube, so the smaller size might work out better for you. You can use a longer stem to make the reach more comfortable.
  • On a bigger bike, the reach to the handlebars will be longer. This means that if you have proportionally longer arms, you might be more comfortable on a bigger frame.

Still confused? Contact us
Buying guide

Note : Please note that specifications are subject to change without notice, based on component availability and other factors.

The Checkpoint ALR 4 is an aluminum gravel bike with famous capabilities for the price. It's built to take on the rigors of gravel trails and dirt roads, but it's still comfortable on your morning commutes and running routes. This bike has no limits, making it the perfect companion for adventuring on the roads or trails.

The + product:

  • Checkpoint ALR 4 lets you immerse yourself in the passion of gravel road trips at an unbeatable price.
  • This bike is characterized by incredible versatility and is suitable for a wide range of riding styles, from gravel rides to daily commutes to bikepacking adventures.
  • Attachment points on the top tube, seat tube and both sides of the down tube simplify the transport of additional gear or containers.
  • The impressive tire clearance allows tires up to 45C to be fitted for additional grip and stability.
  • Stranglehold dropouts make it easy to fine-tune geometry or singlespeed conversion.

Details:

Frame Alpha Aluminum 300 Series, tapered steerer, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat-mount disc brakes, Stranglehold dropouts, 142x12mm thru axle
Fork Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat-mount disc brakes, 12x100mm thru axle
Derailleur lever Shimano GRX RX400, 10 speed
Front Derailleur Shimano GRX RX400, solder
Rear derailleur Shimano GRX RX400, long cage, 36T max.
Cassette Shimano Tiagra HG500, 11-34, 10 speed
Chain KMC X10
Crankset Shimano GRX RX600, 46/30, Size: 49: 165 mm; Size: 52: 170 mm; Size: 54, 56: 172.5mm; Size: 58, 61: 175 mm
Bottom bracket Shimano RS500, 92 mm, PressFit
Brakes Brakes Shimano GRX hydraulic disc
Wheels Bontrager alloy, sealed bearing, centerlock disc, 100x12 / 142x12mm, Shimano 11-speed freehub, thru axle
Rim Bontrager Tubeless Ready, 28 holes, 17mm width, Presta valve
Tires Bontrager GR1 Comp, wire bead, 60 tpi, 700x40C
Handlebar Bontrager Elite IsoZone VR-CF, alloy, 31.8mm
Hanger tape Bontrager Supertack Perf bar tape
Gallows Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
Headset Integrated cartridge sealed bearing, 1.125 inch on top, 1.5 inch on bottom
Saddle Bontrager Montrose Comp, steel rails, 138mm width
Saddle stem Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length
Pedals ---
Total weight 10.26 kg / 22.62 lbs

Geometries:

Frame size 49 52 54 56 58 61
Seat tube 490 520 540 560 580 610
Upper tube 515 536 551 566 577 592
Base length 425 425 425 425 425 425
Head tube 90 107 126 145 171 200
Steering angle 71.4 ° 71.6 ° 71.8 ° 72.2 ° 72.3 ° 72.6 °
Seat tube angle 75.0 ° 74.0 ° 73.5 ° 73.0 ° 73.5 ° 73.0 °
Wheelbase 995 1105 1014 1020 1032 1044

MORE INFORMATION

Features

Gender Men
Wheel Size 700mm
Groupset Shimano GRX 10V

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