Front Brake Pads and Rear Brake Shoes: Yamaha RD80 RD 80 (1982-1984) Honda PXR50 or won't rev) then this

or won't rev) then this could be the solution

as some GSF400 models have 80mm mounting with terminals / leads on the same side

If you're having spark problems on your Honda ST1100 then it's a good idea to get some new coils on the bike as these could be the culprit to a weak spark

Suzuki GSF 400 Z Bandit (Limited model) (1990-1991)

If you are having spark issues on your Yamaha FZX750 then the ignition coils could be the culprit

Front Brake Pads and Rear Brake Shoes: Yamaha RD80 RD 80 (1982-1984) Honda PXR50 or won't rev) then thisBrand new set of front brake pads and rear brake shoes to fit: Yamaha RD 80 LC (1982). Yamaha RD 80 LC2 (1983 1984). This set of front brake pads and rear brake drum shoes have been manufactured to replace the original brake sets on a Yamaha RD80 for the years and models shown above.