Hpi Racing 1444 Underhead Buggy Tires This is a Pair of

This is a Pair of Replacement Diff Shafts for the HPI Savage

sold as a set of 3 pieces

holding every component in precise alignment for consistent handling

series available with 12-23 teeth

superelevated curves for realistic banked motion

Hpi Racing 1444 Underhead Buggy Tires This is a Pair ofHpi 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