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Trek Checkpoint ALR 4 Gravel Bike 2019

★★★★★ ★★★★★
MSP £1,500.00 Save 18%
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Product ID: 878084

The Checkpoint ALR 4 is the most accessibly priced member of Trek's new Checkpoint range of Adventure Bikes - but don't let that convince you that this bike is limited in any regard.

Featuring a robust, lightweight aluminium frame that features mounts for both racks and mudguards, dependable hydraulic disc brakes from Shimano, and wide Schwalbe tyres with clearance to go wider still, this is truly a bike for all occasions.

Four great reasons to buy your bike from Sigma Sports

sigma sports expert advice and rider id
Expert Advice & Rider ID

Sigma Sports has one objective - to help you find your perfect bike. Our friendly, knowledgeable staff ask you a series of questions to understand what type of rider you are and the type of riding you do. We can then identify the style of bike that best suits your needs.

sigma sports finding the right bike size
Finding the right size

Riding a bike that fits you perfectly will help keep you injury-free and ensure you enjoy riding further for longer in total comfort. We check your measurements on a jig to ensure your optimal set-up.

sigma sports bike handover
Bike Handover

When you collect your new bike we'll double-check your position and make any micro-adjustments if required. We'll also discuss the controls on your bike as well as maintenance tips.

sigma sports first free safety check
First free safety check

We offer a free safety check after six weeks or 200 miles, so you can keep riding in confidence. Visit us now in-store to discuss your new bike.

Trek Checkpoint ALR 4 Gravel Bike 2019

The Trek Checkpoint ALR 4 Gravel Bike represents the affordable gateway to the Checkpoint family of adventure bikes. Tough, robust, and above all, versatile, the bikes from this range are designed to be at home on any terrain and to cope with any riding situation. The focal point of this bike is its versatile frame, constructed from lightweight 300 Series Alpha aluminium and finished with a carbon fork. Not only does this frameset boast mounts for both racks and mudguards, it also boasts clearance for up to a 45mm tyre, making it perfect for off-road bike packing adventures as well as your commute to work.

The frameset benefits from Trek's adjustable Stranglehold dropouts, so you can fine-tune the frame geometry to suit whatever terrain you are tackling. Want a shorter, nippier wheelbase to attack that technical trail section? You can have it. Want a longer, more relaxed wheelbase for all-day tarmac cruising? No problem.

The drivetrain, meanwhile, is taken care of by Shimano's dependable Tiagra groupset. The combination of a compact 50/34 crankset and a wide-ranging 11-34 cassette means the Checkpoint is ready for any gradient. The wheels come from Trek's own Bontrager range, and are tubeless ready should you wish to upgrade. The supplied 35mm Schwalbe G-One Allround clinchers, meanwhile, are a renowned gravel-riding favourite, and will help keep you rubber side down on any terrain. The hydraulic Shimano disc brakes, are a totally bomb-proof option that supply assured stopping power whatever the weather.

Gravel riding, bike packing, urban commutes, all day tours - whatever the ride, the Trek Checkpoint ALR 4 has it covered.


  • Robust alloy frame provides mounts for both mudguards and pannier racks
  • Boasts ample clearance for up to a 45mm tyre
  • Stranglehold dropout technology allows you to adjust your frame geometry to suit the terrain
  • Dependable Shimano Tiagra groupset provides bombproof shifting performance

Technical Specification

FRAME Trek 300 Series Alpha Aluminium, tapered head tube, BB86.5, flat-mount disc brakes, Stranglehold dropouts, 12mm thru axle, Control Freak, internal cable routing, 3S chain keeper
FORK Trek Checkpoint carbon disc, alloy tapered steerer, flat-mount disc brakes, rack mounts, hidden mudguard mounts, 12mm thru axle
HEADSET Integrated, cartridge bearing, sealed, 1-1/8˝ top, 1.5˝ bottom
STEM Bontrager Elite, 31.8mm, 7-degree, w/computer and light mounts
HANDLEBARS Bontrager RL IsoZone VR-CF, 31.8mm
BAR TAPE Bontrager, black
FRONT BRAKE Shimano RS505 flat mount hydraulic disc
REAR BRAKE Shimano RS505 flat mount hydraulic disc
SHIFT LEVERS Shimano RS405, 10 speed
CASSETTE Shimano Tiagra, 11-34, 10-speed
CRANKSET Shimano Tiagra, 50/34 (compact)
BOTTOM BRACKET Shimano press-fit
FRONT WHEEL Bontrager tubeless ready rims, Bontrager alloy sealed bearing hubs, 12mm alloy axle, centre lock
REAR WHEEL Bontrager tubeless ready rims, Bontrager alloy sealed bearing hubs, 12mm alloy axle, centre lock
FRONT TYRE Schwalbe G-One Allround, aramid bead, 700cx35mm, clincher
REAR TYRE Schwalbe G-One Allround, aramid bead, 700cx35mm, clincher
SADDLE Bontrager Montrose Comp
SEATPOST Bontrager approved, 2-bolt head, 27.2 mm, 8mm offset

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools.

To see how you build your new bike once you receive it, please see our bike assembly page here.

Please note all bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.

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