Welcome! You are currently on our Slovenia site. Select our United States site to find your local currency, language and product selection.
Please Select
Please Select
4 Speed Gear System
4 Speed Gear System
The Brompton Advance 4 Speed Gear System

As with all derailleur systems, the gearing on your 4 speed Brompton will require adjustment from time to time, particularly within the early life of the product when the cable can stretch, to ensure it performs optimally.

P Line and T Line
P Line and T Line
Cable Tension Is Key

The most common cause of gear issues is that the cable tension is not correctly set; usually caused by 'cable stretch'. You can increase the cable tension by winding the cable tension barrel adjuster outwards. Shift through the gears until you are happy that the gearing is sitting in each gear correctly and running through the gears in a smooth fashion.


We have a large selection of information available in our FAQ section which should answer most enquiries.

Explore the FAQ's

Contact Us

Our Customer Service Team are here to help you; multilingual and available via Live Chat and Email.

Speak to us

Shop Accessories

Explore our range of luggage, parts and accessories.

Shop Now

7 Years Warranty

Register your Brompton for an extended frame warranty​

Register Now