You may upgrade your current 4-speed T line or P line to 12 speed. 

 

Now it's possible! We can convert your 4 speed Brompton Urban P Line or T Line into a 12 speed Brompton. You don’t need to pay for a new Brompton, we can simply upgrade your existing one! This is a real game changer. 

 

Equipped with 12 speed (a combination of a 4-speed internal hub and a 3-speed external derailleur).

 

Brompton’s 12 speed gear system is unique. We’ve expertly engineered a solution that gives you more gears and more range while still fitting into our compact solution to life on two wheels.

 

 

Also, you can purchase a Brompton 12 speed conversion kit and handle the upgrade yourself if you're not located in Colorado or it's too far to visit us. We’ll be happy to ship the conversion kit to help you transform your 4 speed Brompton into a 12 speed Brompton.

 

 

12 Speed Brompton made for longer rides and more varied routes, including hilly terrain. More gears provide flexibility for both flat and steep sections.

 

Ideal for riders traveling longer distances or in areas with diverse terrain, offering greater comfort and versatility during the ride.

 

 

Superlight 12 Speed Brompton Rear Wheel 

12 Speed Hub Gear Indicator Chain

Internal gear hub gear cable pulley assembly for rear frame

Internal gear hub cable anchorage 

Brake lever with integrated underbar 3 speed shifter 

12 speed Chain Tensioner

 

For labor we charge $150 so you can convert 4 speed Brompton to 12 Speed just for $1095 instead of buying new P Line for $3250

 

Of course, if you purchased your Brompton from us, you pay only $845for full conversion!