Try theses
Thumb Brake Lever
There are two Wheaver Design Thumbrakes (01782513363). Which we can supply through our grant system for disabled riders.
http://www.nabd.org.uk/adaptions/wheaverthumb.htmThe Universal Thumbrake can be mounted on the left-hand side or right-hand side of the bars, on 1" or 7/8" bars. This thumbrake can be used to operate either the front or rear brake. It uses about 10mm of room on the handlebar.
The fork mounted thumb brake, which clamps to the top of the left fork of the machine immediately below the top yoke, very useful when the machine has very short or limited room on the handlebars.
There are no hydraulic pipes supplied with these kits so you will need to purchase these to suit your particular machine. We recommend that good quality braided hoses are used to maximise braking efficiency.
There is also a left handle bar mounted thumbrake to fit 7/8" bars, suitable for smaller bikes.
http://www.nabd.org.uk/adaptions/k_levers.htmTwin Hydraulic or Cable Levers (Kliktronic K-Lever2)
The twin brake or clutch & brake lever kit, engineered by Kliktronic Ltd (01359242100
Home ) which we can supply through our grant system for disabled riders, consists of two levers mounted parallel one above the other on a single handlebar clamp. Each lever operates a separate cable or hydraulic master cylinder mounted into a single block thus taking up significantly less room on the handlebar.
This unit has the capacity to operate on bikes or trikes.
The levers can be utilised to operate two brake systems or brake & clutch system - two sizes of cylinder module are available.
This twin lever kit can be used on either side of the handlebars and to fits 1" or 7/8" bars using the adapter supplied.
There are no hydraulic pipes or reservoirs supplied with this kit so you will need to purchase these to suit your particular machine.
When Mick Doohan bugged up his leg in MotoGP he used a thumb rear brake and still won the world championship
I have seen the thumb gear changer will keep looking for the brake one.
