O.S. Engines

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Quality and performance has made O.S. the standard in RC engines for over 80 years.
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1,561-1,584 of 1,808 Results
Piston Ring: 40SF Piston Ring: 40SF
5 out of 5 Customer Rating
Piston Ring: 40SF
$26.24
Prop Nut Safety: FT-120 II FT-160 Prop Nut Safety: FT-120 II FT-160
3.2 out of 5 Customer Rating
Prop Nut Safety: FT-120 II FT-160
$36.85
Spring Metering WLA-2: GT55 Spring Metering WLA-2: GT55
5 out of 5 Customer Rating
Spring Metering WLA-2: GT55
$5.99
Rocker Arm Assembly: FS-40-48S Rocker Arm Assembly: FS-40-48S
3.6 out of 5 Customer Rating
Rocker Arm Assembly: FS-40-48S
$25.29
Rocker Arm Assembly FS-20 Rocker Arm Assembly FS-20
5 out of 5 Customer Rating
Rocker Arm Assembly FS-20
$22.04
Rocker Arm Support Assembly FS91-240 Rocker Arm Support Assembly FS91-240
5 out of 5 Customer Rating
Rocker Arm Support Assembly FS91-240
$29.55
Rotor Stop #4B #4D #4C Rotor Stop #4B #4D #4C
4.4 out of 5 Customer Rating
Rotor Stop #4B #4D #4C
$9.85
Screw Set 21-32 (10) Screw Set 21-32 (10)
3.6 out of 5 Customer Rating
Screw Set 21-32 (10)
$9.85
Standoff 5x31.8mm 1-1/4" (4): GT55 Standoff 5x31.8mm 1-1/4" (4): GT55
5 out of 5 Customer Rating
Standoff 5x31.8mm 1-1/4" (4): GT55
$40.12
Ball WLA-2: GT55 Ball WLA-2: GT55
5 out of 5 Customer Rating
Ball WLA-2: GT55
$6.99
Valve: FS-40 48Surpass Valve: FS-40 48Surpass
3.6 out of 5 Customer Rating
Valve: FS-40 48Surpass
$21.10
Bearing R-1240ZZ Bearing R-1240ZZ
4.8 out of 5 Customer Rating
Bearing R-1240ZZ
$16.99
Prop Shaft Set: OMA-28 Series Prop Shaft Set: OMA-28 Series
3.6 out of 5 Customer Rating
Prop Shaft Set: OMA-28 Series
$20.99
Long Socket Wrench With Plug Grip Long Socket Wrench With Plug Grip
3.8 out of 5 Customer Rating
Long Socket Wrench With Plug Grip
$19.16
Needle Valve Assembly #11H #11HB Needle Valve Assembly #11H #11HB
3.6 out of 5 Customer Rating
Needle Valve Assembly #11H #11HB
$27.29
Rotor Spring #2CK #2B Rotor Spring #2CK #2B
5 out of 5 Customer Rating
Rotor Spring #2CK #2B
$6.49
Slide Valve 12D: 18TM Slide Valve 12D: 18TM
5 out of 5 Customer Rating
Slide Valve 12D: 18TM
$32.56
Throttle Lever #2B #2CB Throttle Lever #2B #2CB
5 out of 5 Customer Rating
Throttle Lever #2B #2CB
$6.49
Crankcase: O.S. Max .12 TG Version 4 Crankcase: O.S. Max .12 TG Version 4
3.8 out of 5 Customer Rating
Crankcase: O.S. Max .12 TG Version 4
$54.76
Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition
4.6 out of 5 Customer Rating
Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition
$111.25
Carburetor 21J3-1: 21XR-B Version II Carburetor 21J3-1: 21XR-B Version II
5 out of 5 Customer Rating
Carburetor 21J3-1: 21XR-B Version II
$162.87
Carburetor #21E Slide: 30VG Series Carburetor #21E Slide: 30VG Series
5 out of 5 Customer Rating
Carburetor #21E Slide: 30VG Series
$119.86
Carburetor Reducer AL2 5.5mm, Red: Speed T1202 Carburetor Reducer AL2 5.5mm, Red: Speed T1202
5 out of 5 Customer Rating
Carburetor Reducer AL2 5.5mm, Red: Speed T1202
$21.10
Crankshaft: O.S.SPEED R21GT2 Crankshaft: O.S.SPEED R21GT2
3.8 out of 5 Customer Rating
Crankshaft: O.S.SPEED R21GT2
$249.99
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