Front Premium Quiet technology Brake Rotors 3438 | Fits: 1900 Manta 1900 Kadett Opel Please see descriptions below for exact fitment. If you have questions please message us. Includes 2 front premium grade OE rotors Additional alloy elements such as chromium & copper are added to achieve maximum life and strength. Precisely machined concentric bearing cups reduce bearing abrasion and prevent wobble. Application with wheel studs, bearings and ABS rings are all manufactured to O.E. specifications. Castings include heat dam where specified by O.E. to help insulate bearing from excessive heat. 3Yr 36,000Mile Manufacturer's warranty included. Ultra smooth braking surface meets O.E. specifications of 15-80 RMS, thus reducing noise and extending pad life. Thickness variation is within .0005" to eliminate brake pedal pulsation. Lateral run-out is within .004". Brake surface flatness is within .002". Precisely processed smooth parallel brake surfaces are held within .0001" radially to ensure consistent brake performance. Products are roll edge marked for complete traceability under QS9000 & TUV standards. Precision balanced to guarantee