Moto-Master 110357 NITRO Front Rotor for Suzuki Fits front Suzuki RM-Z 250 '07-'11 RM-Z 450 '05-'11 Front The new Nitro line is made of special hardened, low carbon- stainless steel for optimal durability and maximum stopping power. ts design provides maximum heat dispersion while the carefully positioned cooling slots ensure optimal brake pad cleaning action in all conditions