Harrop Engineering CNC rework the standard LS1 throttle body to achieve up to a 25% increase in flow. With modifications to the key areas of the standard throttle body, the flow is increased without altering the drivability of your vehicle.

Features
- Modifications give up to a 25% increase in flow
- Fully CNC machined, not modified by hand
- Mod's carried out on your own throttle body