Used on model aircraft for connecting control rods to control surfaces

5 and TRX 3

Complete hollow ball set

INCLUDES: (5) Trees

One Decal Sheet (HPI

Hpi Racing 101588 Turbo Underhead (F3.5 Pro) 5mm Pinion Used on model aircraft forHpi 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