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YS 91SR Helicopter Engine

Model No.: YS-91SR

Price: US$358.00 US$319.00

Availability: Just Sold Out. Usually restock in 5 days.
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YS 91SR Helicopter Engine

Brand New, Made in Japan!

Very Limted Stock, In Stock Now!

The 91 SR is the latest version in helicopter engine technology from YS YAMADA!


  • New Stroke design for superior operation and more power
  • New carburetor design for easier adjustment
  • Factory preset fuel regulator
  • New rear bearing for longevity
  • Balanced crankshaft for a smoother run
  • Pressurized and regulated fuel injection system
  • Same physical size as 61ST-2, 80ST, 91ST making it easy to add more power to your helicopter


  • YS91 SR Helicopter Engine
  • Check Valve
  • Needle Valve
  • English Operator's manual


  • Displacement: 14.89 cc
  • Bore: 27 mm
  • Stroke: 26 mm
  • Practical RPM Range: 2000-17,000
  • Weight Without Muffler: 533g

This product was added to our catalog on Sunday, 10. July 2011.
We accept USD, EUR, JPY, AUD, GBP, SEK and more
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