Usage Tips:High Performance Motorcycle Brake Master Cylinder 9/16 Bore 14mm for KH400 KH500 KZ650 Features： 1、OE Number: The referencing OE number of the brake master cylinder are 43015?032, 43015?027, 43015?018. Please double check the part number of your item to ensure perfect fit. 2、Vehicle Compatibility: This front brake master cylinder is specifically designed for H1 H2 Z1 S2 S3 KH400 KH500 KZ650 and other models, with excellent compatibility. 3、Efficient Braking: Equipped with a 9/16 inch piston, this master cylinder increases braking force, allowing for quicker and more precise braking, enhancing your driving safety. 4、Superior Materials: The motorcycle brake master cylinder is made of high grade ABS, ensuring strength and durability to maintain stable performance in various harsh environments. 5、Smooth To Use: The precision engineered design ensures smooth operating function, enabling the brake system to function optimally for more effective stopping. Specification： Item Type: Front Brake Master Cylinder Material: ABS OE Numbers: 43015-032, 43015-027, 43015-018 Fitment: Fit for H1 Mach III 1971 1973-1975 Fit for H2 Mach IV 1972-1975 Fit for KH400 1976-1977 Fit for KH500 1976 Fit for KZ400 1974-1978(Excpet 1978 KZ400-B1/C1) Fit for KZ650 1977 Fit for KZ750 1976-1977 Fit for KZ1000 1977 Fit for S2 Mach II 1972-1973 Fit for S3 Mach II 1974-1975 Fit for Z1 KZ900 1973-1977 Package List： 1 x Set of Brake Master Cylinder (7PCS)