Vintage HPI Racing Savage Nitro Star Big Block F4.1? F4.6? Nitro Engine Used

Stuck Piston / For Parts: HPI Racing .21 3.5 Nitro Star Engine Used

HPI Racing Nitro Star F4.6 Engine - Low Compression/Gummy? As Is

Needs Work: Traxxas TRX 2.5 Classic Nitro Engine (No glow plug)

HPI Racing .25 3.5 25 Nitro Engine w/ Carb (No Cooling Head) - Turns Free

No Compression? HPI Racing .21 21 3.5 Nitro Engine Used

Hpi Nitro Motor

HPI Racing .21 3.5 Nitro Engine Case & Carb Only