Twin Air Powerflow Throttle Body Kit YZ250F 19-25 YZ450F 18-25

Get faster, smoother throttle response where you need it most. Installed in your throttle body’s Venturi tube, the precision-engineered sleeve reduces the diameter and accelerates the velocity of your air-fuel mix. Add the thinner butterfly valve and less obstructive shaft, and you’ve got faster, more even throttle response through low- and mid-range. For better top-end throttle response (90-100% open throttle position), use the kit’s larger butterfly valve without the sleeve. Either way, you can: • Get faster, smoother throttle response • Eliminate high-end flow loss by lowering flow restriction • Install/remove without damaging the OEM throttle body • Count on maintenance-free reliability after installation