HP Gold Cup Free Flight & Speed Engines
HP .61 Rear Intake Free Flight/Speed Ringed or ABC 99-2254

High Performance HP Gold Cup Rear Intake Free Flight or Speed .61's.
This Gold Cup series has black Thermex casting treatment to dissipate heat. Originally introduced in the 1980's

Features Schnuerle porting, forged connecting rod bushed at both ends, high pressure castings,
twin needle slide carburetor and precision double ball bearing supported crankshaft.

Ringed ABC or ABC construction • Double ball bearings • Schnuerle porting • Rear Disk Valve intake.


Engine Weight

16.6 oz


2.6 HP @20,000rpm

Practical RPM


Prop Shaft Thread


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