I personally ordered
this one for quad because it has stop light sensor as i want to add it to my bicycle, it also comes with optional thumb-throttle.
I did little digging on the subject and here's what i found, for basic bicycle dual cable brake leavers i there's two variants:
- Sunlite Alloy Dual Brake Lever
$12
One problem with it little space if you have grip shifter.
- Promax Bl-47
$21 has more finger space.