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.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with Pedalsure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Trek 520 Disc Gravel Bike 2020
The Trek 520 Disc Gravel Bike is made to go the distance, with a quality steel frame and relaxed touring geometry to keep you comfortable on the longest journeys.
Seasoned long-distance touring riders prefer cable disc brakes for their ease of service and repair, making this bike ideal for expeditions. With the triple chainset combining with a wide-ranging cassette, you get a seriously wide range of gears to help you up any gradient.
Reliable Shimano Sora shifters and derailleurs take care of the mechanics and the bike comes finished with luggage racks and puncture-resistant tyres so it's ready for adventure, straight out of the box.
- 520 is built to hold up, and it's super reliable over the long haul – you'll leave this bike to someone in your will
- ThruSkew ensures that the front wheel will never drop out unintentionally, and makes it easier to remove your wheel without removing all of your front cargo
- There's no better way to see the world than from the saddle, and this is the bike that answers your wanderlust
- All-weather disc brakes and puncture-resistant tyres give you the confidence to take on bigger adventures in any conditions
- It's the longest-running model in Trek's lineup, and one of the best-loved too
|FRAME||Trek butted chromoly disc touring, rack and mudguard mounts, 135x5mm QR|
|FORK||Trek alloy disc touring fork with lowrider mounts and thru-skew captured skewer system|
|HEADSET||1-1/8" threadless, sealed cartridge bearings|
|STEM||Bontrager Elite, 31.8 mm, 7-degree, with computer and light mounts|
|HANDLEBAR||Bontrager Comp VR-C, 31.8 mm|
|HANDLEBAR TAPE||Bontrager Gel Cork tape|
|FRONT BRAKE||TRP Spyre C 2.0 mechanical disc, 160 mm rotor|
|REAR BRAKE||TRP Spyre C 2.0 mechanical disc, 160 mm rotor|
|BRAKE LEVERS||Shimano Sora|
|FRONT DERAILLEUR||Shimano Sora, 34.9 mm clamp-type|
|REAR DERAILLEUR||Shimano Alivio 9-speed, Shadow Design|
|SHIFT LEVERS||Shimano Sora, 3x9-speed|
|CASSETTE||Shimano HG200, 11-36, 9-speed|
|CRANKSET||Shimano Alivio, 2-piece, 48x36x26T with chainguard|
|FRONT WHEEL||Shimano M475 hub, Bontrager Affinity, Tubeless Ready, 36-hole clincher rim|
|REAR WHEEL||Shimano M475 hub, Bontrager Affinity, Tubeless Ready, 36-hole clincher rim|
|FRONT TYRE||Bontrager H1 Hard-case Ultimate, 700x38c with reflective sidewall, clincher|
|REAR TYRE||Bontrager H1 Hard-case Ultimate, 700x38c with reflective sidewall, clincher|
|SADDLE||Bontrager Evoke 1.5|
|SEATPOST||Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset|
|PEDALS||Wellgo nylon body, plastic cage|
|ACCESSORIES||Bontrager BackRack Deluxe|
|MANUFACTURER'S CLAIMED WEIGHT||14.26kg (size 57)|
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.
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.