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Steel shaft
forming the foundation of the buggy
Green motor and glow plug led's
Four 38mm (1 1/2") straight sections
or the Savage X
Hpi Racing 101588 Turbo Underhead (F3.5 Pro) Lipo Batteries Steel shaftHpi 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
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