Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
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Trek Domane AL 5 Gen 4 Disc Road Bike
The Domane AL 5 is a versatile road bike, ideal for newcomers to road cycling. Featuring an Alpha Aluminium frame, 12-speed Shimano 105 drivetrain, and a comfortable all-day geometry, it's perfect for casual rides, group cycling, and venturing off-road onto gravel paths. Whether you're commuting or enjoying extended rides, the Domane AL 5's affordability, smooth performance, and adaptable gearing make it a suitable choice.
Designed for those entering the world of road biking, the Domane AL 5 offers a balanced blend of comfort and speed. With its advanced Alpha Aluminium frame, Shimano 105 groupset, disc brakes, and integrated mounts for additional gear, it provides a smooth and enjoyable riding experience, whether cruising on roads or exploring gravel terrains.
Technical Specification
| 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 |
| Shifter | Shimano 105 R7120, 12-speed |
| Front derailleur | Shimano 105 R7100, 31.8 mm clamp, down swing |
| Rear derailleur | Shimano 105 R7100, 36T max cog |
| Bottom bracket | Shimano RS501 BSA |
| Cassette | Shimano 105 7101, 11-34, 12-speed |
| Chain | Shimano SLX M7100, 12-speed |
| Max. chainring size | 1x |
| Hub front | Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle |
| Skewer front | Bontrager Switch chamfered thru axle, removable lever |
| Hub rear | Bontrager alloy, sealed bearing, CenterLock disc, 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 | 38mm without mudguards, 35mm with mudguards |
| Saddle | Verse Short, steel rails, 145 mm width |
| Seatpost | Bontrager Comp, 6061 alloy |
| Handlebar | Bontrager Elite IsoZone VR-SF, alloy, 31.8 mm, internal Di2 routing |
| Handlebar tape | Bontrager Supertack Perf tape |
| Stem | Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree |
| Brake | Shimano 105 hydraulic disc |
| Brake rotor | Shimano RT70, centerlock, 160mm |
| Rotor size | Max brake rotor sizes |
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. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Trek Domane AL 5 Gen 4 Disc Road Bike Sizing
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