The Classic All-Steel Folding Bike. Original design refined for modern cities. The original design with the 3-part fold, handmade in our London factory since 1975. Compact and robust-it\\\'s a seriously engineered bike that\\\'s fun to ride. Although the C-Line is made to stand up to the rigours of everyday life in the city, owners have taken them on around-the-world trips, on country tours and even to the South Pole, but mainly they are used 364-days a year to improve the day-to-day (we recommend a day-off for an annual service). You can load this 6-speed all-steel workhorse with luggage and a rack for all-weather commuting or touring, then go explore. Some owners have cycled these around the world. Most use them to improve their day-to-day. Key Features > The original design continuously evolved since 1975 > Hand-brazed steel frame and forks > Features a front carrier block (included on every model) to carry Brompton luggage > Equipped with mudguards for all-weather riding > Low handlebars for a comfortable and neutral riding position > 6-Speed for efficient urban riding. > Includes Brompton pump with flexible hose compatible with Schrader and Presta Valves. Specifications Frameset Frame: Precision drawn heat-treated steel tubing with hand brazing and selected auto-brazed joints. Fork: Steel brazed fork Wheels Wheelset: (F) Double-wall rim, 28 spokes laced to a Brompton front hub. (R) Double-wall rim, 28 spokes laced to a Brompton Wide ratio 3 speed internal gear hub with 2 speed external gears (13 and 16 tooth). Giving 6 usable gears with a 300% gear range. Tyres: 349 x 35C Schwalbe Marathon Racer. A puncture resistant tyre with a reflective sidewall. Drivetrain Pedals: Brompton Folding left hand and non-folding right-hand pedals Crank: (6061) forged aluminium crank with 50T chainring and integrated chainguard. Front Derailleur: n/a Rear Derailleur: Sturmey Archer 3 Speed rear hub with 2 speed chain pusher Shifters: 2 or 3 speed Trigger shifter. Bottom Bracket: Square taper bottom bracket Components Handlebar: (7050T74) aluminium handlebar with solution heat-treatment and shot peened finish Grips: Lock-on grips with soft-compound rubber adhered to an engineered core. Headset: Brompton headset Brakes: Brompton Dual Pivot Calipers Saddle: Brompton saddle with integrated carry handle (147mm). Incorporates a mount for a Brompton rear light and saddle bag. Seatpost: Chromoly steel tube, centreless ground, chrome plated for hardness, delivered in a standard length. Bike Sizing Choosing the bike size depends on the type of bike, your height, your riding style, and your preference. A correct fitting bike will be more comfortable, more efficient and more fun to ride. This bike size guide gives our customers general advice on choosing the right size. It is a guide only and we always recommend visiting one of our stores or contacting one of our experts.