RRP Racing service - 57.5mm Throttle Body - Suzuki - Swift Sport ZC32SSpecifications: Manufacturer: RRP Racing service Reference Number: E32 221N Throttle Body Diameter: 57. 5mm RRP Big Throttle Kit pulls out the maximum engine performance with a large diameter of throttle with more than 10% bigger than normal throttle which enable to output the power and inhales the resistance, and also will perform the response up your engine and pedal work. Decreasing the intake resistance performs more engine power and throttle