Replace your original M3 or Z3M sliding calipers by stiffer Wilwood’s SL4R units (4× 1.125” pistons) with the exact same piston area as the original calipers but bigger brake pads. You can also install SL4R calipers with larger 1.25” pistons for more rear bias.

Fits e36 M3 and Z3M.
Can also be fitted to non-M e36 / e46 if using e36 M3 or e46 M3 rotors. But it will lose the handbrake since non-M cars have Ø160mm handbrake drums and M cars have Ø180mm drums.

Adapting kit for SL4R calipers : 420.00$ cad

It is also possible to fit 328×21mm e46 M3 discs on your e36 M3 (originally with 312×22mm discs) by adding the optional spacers, while retaining the handbrake mechanism.

Custom stepped spacers for e46 M3 rotors on e36 M3 : 100.00$ cad

To order or to get more info, please email us at massivebrakes@gmail.com