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O.S. MAX 91FX Ring w/E-4020 Sil.

£189.99 £179.99

Product Information

Sharing exactly the same mounting pattern as the 61FX, the 91FX offers 47% more power with almost no weight penalty!

Just like all FX series engines the 91FX has the rear needle valve assembly with the addition of a variable fuel inlet location in addition to the adjustable main needle orientation. To ease hand starting a ringed piston setup is emplyed.

Give your model a power boost from this compact powerhouse.

Weight: 550g 19.40oz
Displacement: 14.95cc 0.91cu in.
Bore: 27.7mm 1.09in.
Stroke: 24.8mm 0.980in
Power Output: 2.8PS@15000 RPM
Practical RPM: 2000-16000

Product Code: L-OS19021

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