Hpi Racing 1444 Underhead

Hpi Racing 1444 Underhead

This is a genuine HPI Racing replacement underhead for compatible HPI nitro engines. The underhead sits between the cylinder head and the sleeve, forming the combustion chamber surface and helping transfer heat away from the top end.

A damaged or worn underhead costs compression and consistency, so this factory-spec part is the correct fix during a top-end service.

• Genuine HPI Racing replacement part #1444
• Engine underhead
• Factory-spec combustion chamber component
• Restores proper sealing and heat transfer
• Installs during standard top-end service