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TTTF91S

F-91S Four Stroke w/Muffler

THUNDER TIGER

TTTF91S
F-91S Four Stroke w/Muffler
By THUNDER TIGER
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Discontinued
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SPECIFICATIONS
.91 cu in
Displacement:
1.114 in
Bore:
1,800 to 12,000 rpm
RPM:
1.6 HP @ 11,000 rpm
Power Output:
25.3 oz w/muffler
Weight:
11 x 10, 12 x 9, 12 x 10
Recommended Prop:

FEATURES

The Thunder Tiger F-91S Four Cycle engine is the latest project from Kaz Mihara, internationally acclaimed engine designer and "father" of the modern 2-cycle engine.

Designed on modern CAD computer equipment and manufactured in Thunder Tiger's state-of-the-art manufacturing facility, the F-91S is certain to establish new benchmarks of value and performance for 4-cycle engines. Featuring CNC machined components, the .91 contains a special gear-driven camshaft and oversize valves for optimum power output. A precision-machined, ground and balanced crankshaft reduces vibration, while a high-silicon content piston and special hardened cylinder provide years of reliable performance. A twin-needle carburetor precisely monitors fuel flow, and the included muffler transforms exhaust noise into a gentle "purr".

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