Expert Triathlon Advice & Gear: Triathlon Bikes, Wetsuits, and More
Swim. Bike. Race. Tri Harder.
From beginner to pro, we provide expert guidance and a wide selection of triathlon bikes, road bikes, gravel bikes, wetsuits, and more







Argon 18 Anti Matter Gravel Bike
Just Landed
Available in 3 coloursEngineered in Canada, built for race day. The Anti Matter is Argon 18's fastest-ever gravel bike — a complete aero system delivering 14.5W over the Dark Matter at race speed. Available in 3 colourways from £5,495.
See the bikeIntegrated cockpit 55mm Tyre Clearance Custom builds
Triathlon, Road & Gravel Bikes
BikesFrom long rides to race day, find the perfect bike to match your goals and ambition.

New Zone3 Trisuits have landed
Race ReadySprint to Ironman. Sleeveless to aero. We'll help you find the perfect fit.

Openwater & Triathlon Wetsuits
Swim FasterDiscover wetsuits designed for unparalleled comfort, flexibility, and performance in every openwater or triathlon swim.

Wheels
Upgrade PerformanceTransform your ride with wheels designed for speed, precision, and unrivaled performance.

Customer Favourites
Swim, Bike, Run: Shop Triathlon Essentials
Workshop. Expertise. Proper Fitting.
Dereham, Norfolk
Ben and Stef between them cover every discipline. Every bike that leaves the workshop has been built and tested. Every wetsuit recommendation comes from people who've worn them in open water. That's the difference between our shop and online only retailers.
Bike advice & fitting
Ben knows bikes. Road, gravel, TT or tri — honest advice, no sales pressure. If it's not right for you, you'll hear it.
- In-store consultations
- Custom order bikes built to your spec
- Sizing advice from beginner to elite
Workshop & builds
Stef builds every bike. Assembled, tuned, and test-ridden before it leaves. No boxes of bits — it arrives ready to ride.
- Full bike builds, servicing & repairs
- Every sold bike set up before dispatch
- Component fitting and upgrades
Wetsuit fitting
A wetsuit that doesn't fit ruins a race. We fit wetsuits properly — in store with the suit on, or via video call anywhere in the UK.
- In-store fitting — try before you buy
- Video consultation available nationwide
- Orca, Zone3 — full size range in stock
Tri Harder Blog
Triathlon Stories


















