Twinair Powerflow Throttle Body Kit / Injectie gasklephuis - Yamaha YZ250F/450F capable of reducing abrasion and

capable of reducing abrasion and preserving the bike PDS from attrition

Knurled endpiece for a better grip

1 Wire adapter

Spare Parts: Piston 9350DA - Top engine gasket: 603244

Twinair Powerflow Throttle Body Kit / Injectie gasklephuis - Yamaha YZ250F/450F capable of reducing abrasion andThis Twin Air powerflow throttle body kit contains: It improves the engine speed, depending on the configuration. One orange inlet tube One pin Two throttle valves (small and large diameter) Two screws Configuration 1: increases power and acceleration at low and medium revs. Configuration 2: increases power at high revs. (without the orange inlet tube)