6KU Fixie / Single Speed Bike

A lightweight, simple city bike designed for fast, low-maintenance everyday riding.

About this bike

The 6KU Fixie / Single Speed is built for straightforward urban riding. With a lightweight aluminium frame and a simple drivetrain, it’s easy to ride, easy to maintain and ideal for getting around the city quickly.

Clean, minimal and responsive, it strips cycling back to the essentials.

What sets it apart

• Lightweight aluminium frame
• Single speed simplicity (or fixed gear option)
• Low maintenance setup
• Responsive, direct ride feel
• Clean, minimal design

Why we like it

This is one of the easiest bikes to live with. There’s very little to go wrong, and it feels quick and direct in a way that more complex bikes don’t.

Perfect for short, fast city rides without any fuss.

Best for

Commuting and getting around the city — simple, fast riding with minimal maintenance.

Key features

• Lightweight aluminium frame
• Single speed drivetrain (fixed gear compatible)
• Flip-flop rear hub (fixed / freewheel)
• Caliper brakes
• 700c wheels
• Minimal, clean finishing kit

Size guide

Small — 49cm (approx. 5'2"–5'6" / 157–168 cm)
Medium — 52cm (approx. 5'6"–5'9" / 168–175 cm)
Large — 55cm (approx. 5'9"–6'0" / 175–183 cm)
X-Large — 58cm (approx. 6'0"–6'3" / 183–190 cm)

Buying from Bells

Every bike is carefully checked and prepared before leaving us.

• Independent London bike shop
• Expert advice available
• Free fully assembled London delivery — Use code FREELONDON at checkout