Shimano GRX Groupset London

The definitive gravel groupset. Shimano GRX is built for the way roads actually feel — not just ideal tarmac conditions. We spec, install, and tune GRX setups for London gravel riders.

Shimano GRX Range — What We Fit

GRX 400 — 10-speed

The entry point to gravel-specific shifting. 10-speed, hydraulic disc brakes, wide-range gearing. Ideal for riders moving from road to gravel who want confidence on mixed terrain without the price of electronic shifting.

Full groupset fit from £650

GRX 600 — 11-speed

The sweet spot of the GRX range. 11-speed, Semi-Link suspension dampening in the rear derailleur (reduces chain bounce on rough terrain), hydraulic disc brakes. The choice of serious gravel riders who want performance without electronic shifting cost.

Full groupset fit from £900

GRX 800 — 12-speed Di2

The flagship. 12-speed electronic Di2 shifting, Synchro Shift programmable shifting, Semi-Link suspension, hydraulic disc. GRX Di2 is the benchmark gravel groupset at any price point — and the one most of our custom gravel builds end up spec'd.

Full groupset fit from £1,400

GRX 800 Di2 + Carbon Wheels — Our Most Popular Gravel Build

We've spec'd this combination for dozens of London riders making the switch to gravel. The carbon wheels cut rotational weight, the GRX Di2 handles shifting under load on rough descents, and the hydraulic brakes work in any weather.

Groupset + wheels build from £2,200

Why London Riders Choose GRX

  • ✅ GRX was designed for 35-50mm tyres — exactly what London gravel riders run
  • ✅ Wide-range gearing (40t rear, 46/31 or 48/31 front) — built for real gradients, not Tour de France climbs
  • ✅ Disc brake flat mount standard — works with every modern gravel frame
  • ✅ Electronic shifting available at every level — upgrade when you're ready
  • ✅ GRX Di2 Synchro Shift: front derailleur shifts automatically with rear shifts — one lever does everything

Common Questions

Can I upgrade my road bike to GRX?

Yes, in most cases. GRX uses the same bottom bracket standards as Shimano road (Hollowtech II), so compatibility with most road frames is straightforward. The key question is whether your frame has disc brake mounts and clearances for 35-40mm tyres. We check this before quoting.

GRX 600 vs GRX 800 Di2 — which is worth the jump?

GRX 600 mechanical is a superb groupset and most riders will never feel limited by it. The jump to GRX 800 Di2 is about the shifting experience — instant, precise, under all conditions — not raw performance. If you've ridden Di2 before, GRX Di2 is worth it. If you haven't, try GRX 600 first.

Can you build a custom gravel bike with GRX?

Yes. Full custom gravel builds with GRX are one of our most requested setups. Frame selection, carbon wheels, GRX spec — we handle everything. Builds typically take 2-3 weeks from component sourcing to final tune.

What about Campagnolo Ekar?

Ekar is Campagnolo's 1x13 gravel groupset — excellent, but parts availability in London is limited. We service Ekar but for most riders GRX is the more practical choice: wider service network, more mechanic familiarity, easier parts sourcing.

Next step: get the bike checked by the SW17 workshop

Shimano GRX Groupsets London is handled from Bike Clinique at Unit 1, The Swan Centre, Rosemary Road, SW17 0AR. We inspect, explain the work and agree the quote before paid work starts.

Free safety check

Not sure what it needs? Start here.

Book the workshop

Choose a slot and bring the bike in.

Workshop services

See the full service ladder.

Repair problems

Gears, brakes, wheels, tyres and noises.

Brand specialists

Shimano, SRAM, Bosch, Di2 and AXS.

Areas we serve

South West London workshop support.

Call or WhatsApp: 07951 125843. Most repairs and services are completed within 24 to 72 hours unless parts or complex work take longer.

Quick answers

Can you check compatibility before fitting parts?

Yes. We check frame, drivetrain, brake and wheel compatibility before work starts.

Do you work on electronic drivetrains?

Yes. We support Shimano Di2 and SRAM AXS setup, installation and fault checks.

Do you supply parts?

We can advise, source available parts and fit them at the workshop.

Groupset upgrade intake

Book a Groupset Upgrade

Tell us what you’re riding and where you want to go. We’ll check compatibility and come back with a clear quote before any work starts.

Workshop: Unit 1, The Swan Centre, Rosemary Road, SW17 0AR. Quote before work starts.

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