Hpi Racing 101588 Turbo Underhead (F3.5 Pro)

Hpi Racing 101588 Turbo Underhead (F3.5 Pro)

This is a genuine HPI Racing turbo underhead for the F3.5 Pro engine. The underhead forms the combustion chamber geometry that the F3.5 Pro's performance is built around, so a clean, undamaged underhead is essential for consistent power and tuning.

If yours has been damaged or worn through many gallons of running, this factory replacement restores proper sealing and combustion. Fits the F3.5 Pro and installs during normal engine service.

• Genuine HPI Racing part 101588
• Turbo underhead
• For the HPI F3.5 Pro engine
• Restores proper sealing and combustion geometry
• Direct replacement for the stock underhead