Rare Vintage HPI Racing .25 3.5 Nitro Engine w/ Ugpraded GO Cooling Head

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

HPI Racing .21 3.5 Nitro Star Engine. Working

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

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

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

Hpi Nitro Motor

FC 3.5 Nitro RC Engine with OFNA 26 Head for parts/repair with other misc.