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O.S. #5 Recoil Starter Assembly
Retail: $46.99
Price: $34.99
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Availability: Available
Item #: OSMG8978 -

This is the Number 5 Recoil Starter Assembly. It replaces the starter assembly originally used on the following engines:.12 CV-X,.15 CV-X,.12 LD-X,.15 LD-X,.21 RG-X,.12/.15/.18 CV-RX.0-OSMG8978

O.S. 35AX ABL Airplane Engine w/Muffler
Retail: $269.99
Price: $179.99
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Availability: Available
Item #: OSMG0545 -

This is the O.S. .35AX ABL Model Airplane Engine with E-3080 Muffler.Ideally suited to a variety of R/C aircraft including trainer, sport types.FEATURESSame mounting dimensions as the O.S. .32SX and .25FXWeighs only 0.35oz (10g) more than the .32SXAdvanced Bi-Metallic Liner. This process uses a double layer ofplating material rather than one thick layer. This helps the metalto bond to the cylinder and is more durable. Also, the platingprocess is more consistent, resulting in a more precise fit...

O.S. Drive Hub 35AX
Price: $9.49
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Availability: Available
Item #: OSMG5463 -

This is the Drive Washer for the O.S. 35AX EngineThis part mounts onto the crankshaft and has a knurled face that grips the prop.FEATURESAluminum constructionINCLUDESOne drive washer for the O.S. 35AX EngineREQUIREMENTSInstallation on the engine crankshaft0-OSMG5463

O.S. Prop Washer 40-61
Price: $2.29
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Availability: Available
Item #: OSMG8024 -

This is the O.S. Max Propeller Washer for the O.S. Max FS-40, FS-48, 61SFN and 61RFN Engines.This washer installs on the crankshaft to hold the propeller flat against the drive hub.FEATURESReplaces damaged or missing propeller washers.Machined from hardened steel.INCLUDESOne O.S. Max Propeller Washer for the O.S. FS-40, FS-48 and the O.S.61SFN and 61 RFN.REQUIREMENTSInserting onto the crankshaft and securing with propeller nut0-OSMG8024 ...

O.S. Needle #7M/#7LFS
Price: $9.49
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Availability: Available
Item #: OSMG7088 -

The needle valve is used to adjust the fuel/air mixture going into the carb.This is just the needle (and NOT the entire needle valve assembly), the set screw for the needle and the O-ring that goes between the needle and the needle holder.0-OSMG7088

O.S. #10 A5 Glow Plug Cold Air
Price: $6.99
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Availability: Available
Item #: OSMG2693 -

This is the #10 (A5) Glow Plug from O.S. Engines.FEATURESMedium-cold heat range plug that is ideal for aircraft glow engines.60 cu in (9.8cc) and largerINCLUDES#10 (formerly A5) glow plug with brass gasket0-OSMG2693

O.S. Needle #40D
Retail: $6.99
Price: $6.29
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Availability: In Stock
Item #: OSMG7017 -

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O.S. Needle Valve Assembly 40G
Retail: $24.99
Price: $21.49
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Availability: Available
Item #: OSMG6980 -

This is the replacement Needle Valve Assembly for the O.S. 40Gcarb - OSMG2454 on the .46 AX engine.This part mounts to the bracket mounted to the engine crankcase and is whatthe high speed needle screws into and the fuel tubing mounts to.FEATURESPlastic and brass constructionINCLUDESOne needle valve unit bodyOne high speed needle - only available in this unitTwo 3x10mm mounting screwsREQUIREMENTSMounting to the needle stay (bracket)0-OSMG6980 ...

O.S. Needle Valve Unit Body #40G
Retail: $9.99
Price: $8.99
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Availability: In Stock
Item #: OSMG7168 -

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O.S. Needle Stay 40G
Retail: $3.99
Price: $3.59
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Availability: Available
Item #: OSMG7153 -

This is the replacement Needle Stay for the O.S. 40G Carb - OSMG2454on the .46 AX 2-stroke engine.This is the bracket that mounts to the back of the crankcase and iswhat the needle valve unit mounts to.FEATURESAluminum constructionINCLUDESOne aluminum needle stayREQUIREMENTSAssembly onto the engine0-OSMG7153

O.S. Needle Holder 65LA
Retail: $9.99
Price: $8.99
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Availability: In Stock
Item #: OSMG7118 -

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O.S. Valve Assembly 40-65LA
Retail: $21.99
Price: $18.49
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Availability: Available
Item #: OSMG6997 -

This is the Replacement Needle Valve for the following engines:.40LA, .46LA, .46FX, .46FXI, .65LA* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** This is also the Valve Assembly for the .91 FX Ringed engine ** for which you will also need OSMG7152 Needle Stay 91FX ** if you are using the new Back Plate OSMG4078 ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *FEATURESBrass Needle Holder with Plastic SpraybarINCLUDESOne Needle....

O.S. Ratchet Spring #7H/#7D/#2K
Retail: $2.29
Price: $2.09
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Availability: Available
Item #: OSMG8172 -

This is the ratchet spring that fits many OS Engine Needle Valve Assemblies.It is used to hold the needle valve in place after adjustment.FEATURESMetal ConstructionBlack in colorINCLUDESOne Ratchet SpringREQUIREMENTSNone, item is a stock partSPECIFICATIONSOverall Length: 15.9mm (.625")Spring Length: 10mm (.5")Mounting Diameter: 6mm (.24")COMMENTSThis Ratchet Spring fits the needle valves on the following engines:-LA Series-FX Series-SX Series-61 RX-LX Series-FS52 thru FS120 Surpass Four Stroke...

O.S. 30VG (P) ES ABL w/21E Slide Carb
Retail: $449.99
Price: $249.99
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Availability: Available
Item #: OSMG2078 -

This is the O.S. Max 30VG (P) ES Electric Start, Rear ExhaustMonster Truck Engine with Pilot Type Crankshaft.FEATURESPreinstalled E.S. Starter backplate is designed to use the DuraTraxKwik-Pit Super Start for the HPI Savage or the HPIRoto Starter System (HPIP8711), seeCOMMENTSSame mounting dimensions as .21 size engines making upgrading easierAdvanced Bi-Metallic Liner (ABL) cylinder liner constructionThis process uses a double layer of plating material rather thanone thick layer. This helps...

O.S. Exhaust Pipe Nut FS-120 III
Retail: $2.29
Price: $2.09
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Availability: Available
Item #: OSMG5777 -

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O.S. Exhaust Joint Nut FS-120 Surpass
Retail: $4.99
Price: $4.49
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Availability: Available
Item #: OSMG5691 -

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O.S. Carburetor #60P FS91SII
Retail: $99.99
Price: $84.99
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Availability: Available
Item #: OSMG2432 -

0-OSMG2432

O.S. Silencer F-4020 56FS
Retail: $45.99
Price: $38.99
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Availability: Available
Item #: OSMG2950 -

This is a Silencer for the O.S. 56FS "a" 4-Stroke EngineFEATURESCast Aluminum ConstructionPre-installed Pressure TapExhaust outlet section can be rotated to the most convenientpositionsINCLUDESSilencerOne Exhaust header pipeSPECIFICATIONSLength: 3.47" (88.9mm)Width: 0.96" (24.4mm) at widest point0-OSMG2950

O.S. Exhaust Header Assembly 56 FS
Retail: $10.99
Price: $9.49
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Availability: In Stock
Item #: OSMG2613 -

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O.S. Needle Ext Cable FR5 300
Retail: $4.99
Price: $4.49
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Availability: Available
Item #: OSMG7290 -

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O.S. Muffler Extension #744B
Retail: $16.99
Price: $14.49
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Availability: Available
Item #: OSMG2582 -

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O.S. 15LA ABN w/Muffler
Retail: $109.99
Price: $65.99
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Availability: Available
Item #: OSMG0016 -

This is the O. S. Max .15LA Engine with Muffler.Meets requirements of beginners and sport flyers.*** TWO YEAR LIMITED WARRANTY ***FEATURESOne-Piece natural finish crankcaseNon-ringed cylinder constructionTwo Bronze Crankshaft Bushings (sometimes called oilite bearings)Schnuerle Porting (Schnuerle scavenging)Side ExhaustNylon Backplate with Remote Needle Valve#10G carb with remote needle valve assemblyINCLUDESExpansion-Style Muffler #871.15LA Engine w/CarbInstructions, Decal Sheet, and Warranty...

O.S. Needle #9B
Retail: $11.99
Price: $9.99
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Availability: Available
Item #: OSMG7063 -

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O.S. 65AX ABL w/Muffler
Retail: $339.99
Price: $209.97
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Availability: Available
Item #: osmg0558 -

This is the O.S. 65AX ABL Aircraft Engine with the E4010A Muffler.FEATURESIdeal for trainers, sport planes and scale aircraftDrops in easily in the same mounting space as the O.S. 61FX ABLABL-Advanced Bi-Metallic Liner process uses a double layer of platingmaterial rather than one thick layer. This helps the metal bond tothe cylinder and makes the plating more durable. Also, the platingprocess is more consistent, resulting in a more precise fit betweenpiston and sleeve for better compression...