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O.S. - OSMG2881 OSM72145000 72145000 531028608771 4531028608771
Manufacturer Stock#
A Closer Look at This Product
  Tech Notes

Parts Compatibility

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Manufacturer's Product Web Page

O.S. PowerBoost Pipe 91HZ Series
O.S. PowerBoost Pipe 91HZ Series
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Quantity Discount
  Special Savings When Buying in Quantities
Special Stock Number Units at this Price Tower's Low Price Click to Order Quantity Discount Savings
O.S. PowerBoost Pipe 91HZ Series Add to Wish List
420.18  Buy Now 19.80  
O.S. PowerBoost Pipe 91HZ Series Add to Wish List
626.97  Buy Now 33.00  
O.S. PowerBoost Pipe 91HZ Series Add to Wish List
1039.45  Buy Now 60.50  

Tech Notes
This is the .91 size Powerboost Pipe from O.S. Engines.


Fits O.S. Speed 91HZ-R 3D and 91HZ series engines
Developed exclusively for 3D flights with 90 size helicopters
Delivers excellent high performance in the RPM range used in
performing manuevers
Aluminum construction with polished natural finish


.91 size Powerboost Pipe
Metal Engine to Pipe Gasket
Pressure Type
Silicone Exhaust Deflector
Two 4x45mm Socket Head Cap Screws
Two Nuts
Two Washers
4x5mm Screw
Zip Tie


Fastening to engine


Length: 12.3" (313mm) including exhaust outlet
Exhaust Outlet Diameter: 0.39" (10mm)
Distance Between Mounting Holes: 1.7" (43mm)
Diameter: 1.96" (50mm) at thickest point

jxs 06/13/11

– If you need more information, use these O.S. resources –
Click Here: Manufacturer's Product Web Page
Web Site:
Phone: 217-398-8970
  Postal Address:

Click here for Units of Measure Conversion Calculators

Parts Compatibility
Parts Compatibility for O.S. PowerBoost Pipe 91HZ Series
This item is an optional part for the following:
 LXZGN7 O.S. 91HZ-R Ringed Helicopter Engine  (Parts List)
 LXAAFH O.S. 91HZ Ringed Helicopter Engine  (Parts List)
 LXAZGJ O.S. 91HZ-R 3C Speed Red Helicopter Engine  (Parts List)
 LXAZGH O.S. 91HZ-R 3D Speed Black Helicopter Engine  (Parts List)
 LXAZRV O.S. 91HZ-R 3D Speed Black w/Powerboost Pipe  (Parts List)

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