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Sharing the same mounting pattern as the 61 FX the new
91 FX offers 47% more power with almost no weight
penalty. Like all FX series engines the 91 FX has the rear
safety needle valve assembly with the
addition of a variable inlet location as
well as main needle orientation. Give
your model a power boost from this compact powerhouse.
Specifications:
Displacement: 14.95cc(0.912cu.in)
Bore: 27.7mm(1.091in.)
Stroke: 24.8mm(0.976in.)
Output: 2.8ps/15,000r.p.m.
Practical r.p.m.Range:2,000-16,000r.p.m.
Weight: 550g(19.42oz.)
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