TWIN AIR Powerflow Throttle Body Kit - Yamaha YZ250F/450F

.cs95E872D0{text-align:left ; margin:0pt 0pt 0pt 0pt ; }.csC57700C4{color:#000 ; background-color:transparent ; font-weight:bold ; font-style:normal ; }.csA7555675{color:#000 ; background-color:transparent ; font-weight:normal ; font-style:normal ; }.cs4FC7BF42{text-align:left ; margin:0pt 0pt 0pt 0pt ; list-style-type:disc ; color:#000 ; background-color:transparent ; font-weight:normal ; font-style:normal ; } This Twin Air powerflow throttle body kit contains: One orange inlet tubeOne pinTwo throttle valves (small and large diameter)Two screws It improves the engine speed, depending on the configuration. Configuration 1: increases power and acceleration at low and medium revs.Configuration 2: increases power at high revs. (without the orange inlet tube)