Product Details
Trek Domane AL 4 Gen 4 Road Bike
If you're looking to start your road biking journey and need a bike that's comfortable, smooth, and budget-friendly, the Domane AL 4 is an excellent choice. Ideal for riding primarily on roads, the Trek also offers the versatility to handle rail trails and crushed gravel paths. Whether you're planning long, sun-soaked rides or quick spins around the neighborhood, this bike is designed to keep you comfortable for as long as you want to pedal.
The Domane AL 4 features a 100 Series Alpha Aluminium frame with advanced tube shaping that offers both premium aesthetics and a high-quality ride. It comes equipped with a 10-speed Shimano Tiagra drivetrain for reliable shifting, powerful disc brakes for consistent all-weather stopping, and durable wheels. The bike also includes integrated frame mounts for extra gear, 32 mm tubeless-ready road tires for added comfort, and flared handlebars for enhanced control and stability. With its balance of comfort, speed, and versatility, the Domane AL 4 is the perfect road bike for those ready to venture off the beaten path.
Features
- Frame: 100 Series Alpha Aluminium, tapered head tube, internal routing, mudguard mounts, flat-mount disc, UDH, 142x12 mm thru axle
- Fork: Domane AL carbon, tapered carbon steerer, internal brake routing, fender mounts, flat mount disc, 12x100mm thru axle
- Weight: 56 - 10.35 kg / 22.82 lb
- Weight limit: This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 125 kg (275 lb).
- Shifter: Shimano Tiagra R4720, 10-speed
- Front derailleur: Shimano Tiagra 4700, 31.8 mm clamp
- Rear derailleur: Shimano Tiagra 4700, long cage, 34T max cog
- Crank: Shimano Tiagra 4700, 50/34
- Bottom bracket: Shimano RS501 BSA
- Cassette: Shimano 10-speed, 11-32T
- Chain: Shimano Tiagra HG54, 10-speed
- Max. chainring size: 1x 50T; 2x 50/34
- Hub front: Formula RX-512 alloy, 6-bolt, 100x12 mm thru axle
- Skewer front: Bontrager Switch chamfered thru axle, removable lever
- Hub rear: Formula RX-142 alloy, 6-bolt, Shimano 11-speed freehub, 142x12 mm thru axle
- Skewer rear: Bontrager Switch chamfered thru axle, removable lever
- Rim: Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21 mm width, Presta valve
- Spokes: 14 g stainless steel, black
- Tyre: Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32 mm
- Max tyre size: 38 mm without mudguards, 35 mm with mudguards
- Saddle: Verse Short, steel rails, 145 mm width
- Seatpost: Bontrager Comp, 6061 alloy
- Handlebar: Bontrager Comp, alloy
- Handlebar tape: Bontrager Supertack Perf tape
- Stem: Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree
- Brake: Shimano Tiagra hydraulic disc
- Brake rotor: Shimano RT66, 6-bolt, 160 mm
- Rotor size: Max brake rotor sizes 160 mm front and rear
Highlights
- Versatile and smooth, ideal for your first performance road bike.
- Accommodates larger tires for comfort on both tarmac and gravel roads.
- Internal cable routing and integrated cockpit offer a sleek, premium look.
Specifications
- Model
- Domane AL 4 Gen 4
- Bottom Bracket [Maker]
- Shimano
- Bottom Bracket Standard
- BSA
- Brakes [Kind]
- Hydraulic Disc
- Brakes [Maker]
- Shimano
- Brakes [Model]
- Tiagra
- Cassette [Gearing]
- 11-32
- Cassette [Maker]
- Shimano
- Cassette [Model]
- HG500
- Chain [Maker]
- Shimano
- Chain [Model]
- Tiagra HG54
- Chainring [Gearing]
- 50/34
- Crank [Maker]
- Shimano
- Crank [Model]
- Tiagra FC-4700
- Discipline Compatibility
- Road
- E-Bike
- No
- F Hub [Maker]
- Formula
- F Hub [Model]
- RX-512
- Family
- Domane+
- FD [Maker]
- Shimano
- FD [Model]
- Tiagra 4700
- Fenders Mounts
- Yes
- Fork [Axle Diameter]
- 12 mm
- Fork [Axle Type]
- Thru-Axle
- Fork [Brake Type]
- Disc
- Fork [Maker]
- Trek
- Fork [Material]
- Carbon
- Fork [Model]
- Domane AL
- Fork [Wheel Size]
- 700c
- Frame [Hanger Standard]
- UDH
- Frame [Material]
- Aluminium
- Frame [Tire Clearance]
- 38c mm
- Frameset
- No
- Gearing [Configuration]
- 2x
- Gearing [Kind]
- Conventional
- Gender
- Unisex
- Handlebar [Drop]
- 121 mm
- Handlebar [Kind]
- Drop
- Handlebar [Maker]
- Bontrager
- Handlebar [Material]
- Aluminium
- Handlebar [Reach]
- 80 mm
- Handlebar [Shape]
- Drop bar
- R Hub [Maker]
- Formula
- R Hub [Model]
- RX-142
- Rack Mounts
- Yes
- RD [Maker]
- Shimano
- RD [Model]
- Tiagra 4700
- Saddle [Material]
- Steel
- Saddle [Width]
- 145 mm
- Seatpost [Diameter]
- 27.2
- Seatpost [Kind]
- Rigid
- Seatpost [Maker]
- Bontrager
- Seatpost [Material]
- Aluminium
- Seatpost [Offset]
- 8 mm
- Shifters [Maker]
- Shimano
- Shifters [Model]
- Tiagra R4720
- Shifting
- Mechanical
- Stem [Angle]
- 7 degree
- Stem [Clamp Diameter]
- 31.8
- Stem [Maker]
- Bontrager
- Stem [Material]
- Aluminium
- Suspension Configuration
- Rigid
- Tires [Maker]
- Bontrager
- Tires [Width]
- 32 mm
- Wheels [Configuration]
- Front+Rear
- Wheels [Kinds]
- Tubeless Ready
- Wheelset [Inner Width]
- 21 mm
- Wheelset [Maker]
- Bontrager
- Wheelset [Material]
- Aluminium
- Wheelset [Model]
- Paradigm SL
- Product code
- 1838565 / 54294436348250
Size Guide
| Size | 47cm | 50cm | 52cm | 54cm | 56cm | 58cm | 60cm | 62cm |
|---|---|---|---|---|---|---|---|---|
| Rider Height (cm) | 152 - 158 | 158 - 163 | 163 - 168 | 168 - 174 | 174 - 180 | 180 - 185 | 185 - 190 | 190 - 195 |
| Inseam (cm) | 71 - 75 | 74 - 77 | 76 - 79 | 78 - 82 | 81 - 85 | 84 - 87 | 86 - 90 | 89 - 92 |
| Rider Height (ft. in.) | 5'0" - 5'2" | 5'2" - 5'4" | 5'4" - 5'6" | 5'6" - 5'9" | 5'9" - 5'11" | 5'11" - 6'1" | 6'1" - 6'3" | 6'3" - 6'5" |
| Inseam (inches) | 28" - 30" | 29" - 30" | 30" - 31" | 31" - 32" | 32" - 33" | 33" - 34" | 34" - 35" | 35" - 36" |
| Seat Tube (ctr-top) | 424 | 453 | 483 | 496 | 525 | 553 | 573 | 593 |
| Seat Tube (ctr-ctr) | - | - | - | - | - | - | - | - |
| Effective Top Tube | 512 | 521 | 534 | 543 | 559 | 574 | 586 | 598 |
| Actual Top Tube | - | - | - | - | - | - | - | - |
| Seat Angle (°) | 74.6 | 74.6 | 74.2 | 73.7 | 73.3 | 73.0 | 72.8 | 72.5 |
| Head Tube Angle (°) | 72.1 | 72.1 | 72.8 | 73 | 73.5 | 73.8 | 73.9 | 73.9 |
| Head Tube Length | 100 | 111 | 121 | 131 | 151 | 171 | 191 | 211 |
| Fork Rake | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 |
| Chainstay Length | 410 | 410 | 410 | 410 | 410 | 411 | 411 | 412 |
| Wheelbase | 972 | 974 | 977 | 981 | 983 | 992 | 1001 | 1010 |
| Stack | 507 | 521 | 533 | 541 | 563 | 581 | 601 | 620 |
| Reach | 373 | 378 | 383 | 386 | 391 | 396 | 399 | 403 |

All measurements are in mm unless otherwise stated.
Reviews
I bought this bike a few weeks ago and am loving it so far. very light, easy detachable wheel so I can put it into my car with ease. Am loving cycling & had great support from the Sigma team while deciding what to buty.
Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
Q & A
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About Trek
The best bike, ridden everywhere.
Founded in a Wisconsin barn in 1976, Trek has grown into one of the world's most recognised bicycle brands without losing the obsession that started it all: build the best bike, ride it further, share it with everyone.
Trek believes the bicycle is a simple solution to many of the world's most complicated problems. Every bike Trek builds — from the Madone race weapon to the Marlin trail bike — is made with that conviction. More riders, more often, on better bikes.



