All Bikes

View all the bikes we currently have in stock at Sigma Sports. We have a wide choice of premium brands to choose from including Trek, Argon18, Specialized, Colnago, Pinarello, Cervelo, CUBE, Cannondale and Bianchi to name just a few. Unsure what size bike you need? Read our handy guide. 

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Progressive Geometry: Quick and nimble yet ensures stability and control on fast, choppy descents.
Versatility: Suited for a wide variety of ride styles, from gravel and bikepacking to daily commutes.
Tyre Clearance: Massive clearance allows the use of tires up to 45c for extra traction and stability in any conditions.
Integrated Mounts: Frame bag mounts and rack and mudguard mounts make it easy to carry gear and water.

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SALEFREE STARTER KIT
  • Lightweight SmartForm Alloy frame 
  • Synapse carbon fork 
  • Shimano Tiagra 10-speed groupset with hydraulic disc brakes
  • DT Swiss R470 tubeless-ready wheels and Vittoria Zaffiro Pro 700x30c tyres
  • 32mm tyre clearance
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  • Fast climbing frameset that corners on rails, and descends with confidence
  • Shares the geometry of Trek's highest-end carbon Emonda racing bikes and it gives you a ride quality that stands up in every way to far more expensive carbon framesets
  • Internal cable routing extends the life of your cables and adds to the bike's sleek look
FREE STARTER KIT

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.

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  • Full titanium construction for a comfortable, compliant ride
  • Kinesis carbon thru-axle fork
  • Adaptable cable ports for all major groupsets
  • Kinesis Rider Fit Geometry for comfort across all sizes
  • Frame supplied with fork, headset, titanium seat clamp, front & rear thru-axle, frame ports and cable guide

Super Plastic Formed Alloy Frame
Constructed from tubes that are created with an advanced manufacturing technique named Superplastic Forming (SPF), which involves heating the alloy until exhibits superplasticity, and then creating complex tube shapes using gas pressure.

Columbus Futura Road Disc Fork
T700S and HFM Carbon Fibre Monocoque construction, 45mm rake, 440g fork. Stiff with high vibration damping for a smooth ride.

30mm Tyre Clearance
It is becoming widely accepted that wider tyres offer more speed, more grip and more comfort on real world surfaces. The Aithein Disc will take up to 30mm tyres so you can choose the right tyre for you and your riding conditions.

Kinesis Rider Fit Geometry
Geometry adjustments have been made to ensure a better fit across a greater range of rider dimensions. As a result there is more consistent handling across sizes, less toe overlap, and more intuitive sizing.

68mm Threaded BB
Threaded BBs allow you to use reliable, creak free bottom brackets that withstand year round British conditions.

Adaptable Cable Ports
Thanks to interchangeable cable entry points you can run exactly the routing you need, ensuring there are no excess holes into the frame.

Wireless Electronic / Mechanical / 2x / 1x Compatible
The Aithein frame is designed to work with mechanical and all wireless electronic groupsets.

SALEFREE STARTER KIT

Sram Apex AXS XPLR Groupset
Team Aero-Gravel i23 TC AGX Disc Wheelset
3D System
Gravel Geometry
Argon Fit System

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SALEFREE STARTER KIT

Unrivaled versatility and performance in gravel biking
Premium E5 alloy frame and full carbon FACT fork for dynamic rides
Progressive geometry for stability and responsiveness on any terrain

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FREE STARTER KIT
  • Frame: Double Butted CrMo Beyond Road
  • Shimano Claris 8 Speed Groupset
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All-Terrain Mastery: The Tripster AT excels in diverse terrains, from commuting to gravel trails and continent-spanning adventures.
Adaptable Swiss Army Bike: Versatile features include through axles, multiple tire size options, and compatibility with various group sets, making it a go-to for any riding scenario.
Customizable Comfort: The Columbus Futura Cross Plus fork allows riders to adjust rake (47mm to 52mm), tailoring the bike's performance for individual preferences, frame sizes, or loaded bike packing setups.

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FREE STARTER KIT
  • Frame: Series 3 Double Butted CrMo
  • Size-specific wheels (XS, S - 650B, M, L, XL - 700C)
  • SRAM Apex x1, 2 speed Groupset
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FREE STARTER KIT
  • 300 Series Alpha Aluminium Frame and Carbon Fork
  • Shimano CUES 11 Speed Groupset
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SALE

Frame: Specialized E5 Premium Aluminum with D'Aluisio Smartweld Technology
Fork: FACT Carbon, 12x100mm thru-axle
Weight: 1.98kg (4 lb, 5.8 oz)

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FREE STARTER KIT
  • 300 Series Alpha Aluminium Frame and carbon fork
  • Shimano CUES 10 speed Groupset
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