Brompton C Line Folding Bike - 4-Speed

The C Line - 4-speed from Brompton lets you go anywhere easily and confidently. Helping you roll with the adventures that life presents, with the C Line - 4-speed you can commute, travel, and run errands in style. As with all of the stunning Brompton bikes, this model allows each journey to be a joyful experience full of agility and power. Refinement is showcased in every element of this versatile bike. Promising a smooth ride, the 4-speed gearing system and powerful brakes ensure control and precision can be enjoyed. This makes for a comfortable riding experience that is powerful and exciting. Expert engineering isn't the only benefit that this everyday bike brings. Letting you roll and glide around with ease, the ergonomic folding system can be actioned in 20 seconds to turn your 2-wheeled wonder into a compact carry accessory. Perfect for commuters or carefree travelers who want to visit every part of a new location, the frame is lightweight for easy carrying. Finished with powder coating, our team of experts hand make each bike in the London Brompton factory using energy from over 90% renewable sources. The C Line - 4-speed makes traveling around a breeze. Letting you embrace fun-filled moments whenever they arise, with Brompton, you can experience the world in a brighter, more powerful way.

Specification

Weight: From 12 kg

Number of gears: 12

Material: Steel

Folded size: 25.3" H x 23" W x 10.6" D

Main frame: Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints

Rear frame: Brompton Advance Rear Frame

Fork: Steel brazed fork

Grips: Lock-on grips with soft-compound rubber adhered to an engineered core

Seat post: Standard or extended

Saddle: Standard

Seat clamp: Composite seat clamp and rear frame clip

Hinge clamps: Composite hinge clamp levers

Pedals: Brompton Folding left hand and non-folding right-hand pedals

Drive train: Brompton Wide-range 4-speed drivetrain

Chainset: 6061 forged aluminium crank with 50T chainring and integrated chainguard

Bottom bracket: Square taper bottom bracket

Headset: Brompton headset

Shifters: Brompton 4-speed trigger shifter

Sprockets: 11-13-15-18 Tooth

Derailleur: Brompton Chain pusher

Rear wheel: Double wall rim, 28 spoke, Brompton Wide ratio 3 speed internal gear hub

Front wheel: Double-wall rim, 28 spokes laced to a Brompton front hub

Tyres: 349 x 35C Schwalbe Marathon Racer, a puncture resistant tyre with a reflective sidewall

Tubes: Schrader valve

Mudguards: Included

Lighting: Reflectors

Roller wheels: Advance Roller Wheels

Rack: Not included

Brakes: Brompton Dual Pivot Calipers

Front carrier block adaptor for all types of Brompton luggage

Model year 2026

There are three handlebar types, offering different riding positions for varying heights of rider and riding styles.

Low: A straight handlebar. Ideal for those who like to race about town and have experience of riding Brompton bikes. The bar gives the bike a sporty feel.

Mid: A riser style handlebar. The most popular handlebar type, it creates a relaxed neutral position for most riders. For smaller rider a mid bar provides an upright dutch bike position.

High: A riser style handlebar with a longer stem. The high bars create a Dutch bike position putting the rider very upright. The high bar is ideal for taller riders who want a relaxed feel.

Handlebar: MID; Colour: PALM GREEN, MATT BLACK, DUNE SAND, RED PLUM