Originally Posted by hokiefyd

If you replace them, just make sure the brake levers you get are for V-brakes (if you indeed have V-brakes...I'm just going from the picture of the levers you already have). The cable pull ratio for V-brakes is different from traditional cantilever brakes, and brake levers indended for both types are available. If you have V-brakes, then you'll want levers designed for them.

The SL-M315-7R (for the right) and SL-M315-L (for the left) are likely your best choices if you want trigger style shifters. You can also find indexed thumb shifters and twist/grip shifters from various brands as well.