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    Display : All categories 0 Aircraft 1922 Helicopters 180 Spare Parts 74

    High Quality Helicopter Muffler for OS/YS .91 Glow Helicopter Engines

    High Quality Helicopter Muffler for OS/YS .91 Glow Helicopter Engines

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    High Quality Helicopter Muffler for OS/YS .91 Glow Helicopter Engines

    4 Reviews
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    Product Description

    This is a high quality tuned muffler for OS & YS .91 glow helicopter engines. It features a beautifully finished surface polished to a mirror finish and includes all necessary hardware. This is a great bolt-on performance upgrade for your heli and at a fraction of the cost of the big name brands!

    Specs:
    Muffler length: 313mm
    Muffler diameter: 45mm
    Manifold standoff height: 27mm
    Manifold bolt spacing: 32mm & 42mm (both size adapter mount plates included)

    *Note: Fits OS & YS .91 glow helicopter engines (may fit others with 32mm or 42mm manifold bolt spacing).

    Product Specifications
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    • Nitro Heli Muffler
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    Reviews

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    | Verified Buyer

    • Overall
    • Quality
    • Value

    Certified Buyer Rated

    Aug 10, 2016

    Works realy good in my trex700 n and OS 91hz. Great quality cost ratio. Pretty similar to hatori 933 for 1/3 the cost. It makes great power at good temp .

    Titanium | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Aug 10, 2014

    great muffler fit on my YS .91 Although In a raptor 90 3D I had to cut out a notch in part of the frame rail. To clear the top left header adaptor . Engine runs strong sounds good looks great. Added bonus is the awesome price :)

    trex700 | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Jul 31, 2013

    High Quality Helicopter Muffler for OS/YS .91 Glow Helicopter Engines.



    is this the same as Hatori 939 and is it made the Hatori looks the same same fitting kit??

    Ji | Verified Buyer

    • Overall
    • Quality
    • Value

    Customer Rated

    Apr 26, 2013

    The exercise price ratio compared with Hatori 939 align and I can only recommend testing with the engine align 91H 20 pcnt nitro complete satisfaction for 3 D

    | Verified Buyer

    • Overall
    • Quality
    • Value

    Certified Buyer Rated

    Jul 30, 2012

    It adds extreme performance to my T-rex 700 with ys91 sr motor.

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