Trek ALR 4 Matte Galactic Grey Gravel Bike

The Trek Checkpoint ALR 4 is a rugged and versatile adventure gravel bike. Its Alpha Series 300 aluminium frame offers responsiveness, whilst the carbon fork absorbs vibrations for greater comfort. Its numerous mounting points make it easy to fit racks, mudguards and panniers.

Equipped with an SRAM Apex 11-speed single-chainring drivetrain, it’s ideal for varied terrain and tough climbs. Tektro mechanical disc brakes provide powerful and reliable stopping power. The Bontrager Paradigm Tubeless Ready rims and Bontrager GR1 Team Issue 700x40 mm gravel tyres guarantee traction and comfort, even on rough terrain.

The frame’s Alpha Series 300 aluminium is a high-quality alloy, hydroformed for a perfect balance between stiffness and lightness. The carbon fork reduces weight and improves shock absorption.

Technical specifications:

Frame:
- Frame: Alpha Series 300 aluminium, tapered head tube, internal cable routing, 3S chainstay, T47 bottom bracket, rack and mudguard mounts, pannier mounts, Flat-Mount disc brakes, 142x12 mm thru-axle
- Fork: Carbon, tapered steerer, rack and mudguard mounts, Flat-Mount disc brakes, 12x100 mm thru-axle
- Axles: Bontrager Switch, removable lever, 100x12 mm front, 142x12 mm rear

Drivetrain:
- Crankset: SRAM Apex 1, 40T, DUB Wide axle, length 165 mm (49), 170 mm (52), 172.5 mm (54, 56), 175 mm (58, 61)
- Cassette: SRAM PG-1130, 11-42, 11-speed
- Chain: SRAM PC-1130, 11-speed
- Shift lever: SRAM Apex, 11-speed
- Rear derailleur: SRAM Apex 1, long cage, max 42-tooth sprocket
- Bottom bracket: SRAM DUB, T47 threaded, internal bearing

Braking system:
- Brakes: Tektro, mechanical, dual-piston, Flat-Mount
- Discs: Tektro, Centerlock, 160 mm

Components:
- Handlebar: Bontrager Elite Gravel, alloy, width 38 cm (49), 40 cm (52), 42 cm (54, 56), 44 cm (58, 61)
- Stem: Bontrager Elite, 31.8 mm, Blendr-compatible, 7 degrees, 70 mm (49), 80 mm (52, 54), 90 mm (56, 58), 100 mm (61)
- Saddle: Bontrager Verse Comp, steel rails, 155 mm (49, 52), 145 mm (54, 56, 58, 61)

Wheels:
- Rims: Bontrager Paradigm, Tubeless Ready, 24-hole, 21 mm, Presta valve
- Tyres: Bontrager GR1 Team Issue, tubeless-ready, Inner Strength Casing, aramid bead, 120 tpi, 700x40 mm

General information:
- Brand: Trek
- Bike type: Gravel bike
- Colour: Matte Galactic Grey
- Sizes: 49, 52, 54, 56, 58, 61
- Weight: 9.91 kg