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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414-461 of 1,758 Results
Cam Gear: Sirius 7 Cam Gear: Sirius 7
4 out of 5 Customer Rating
Cam Gear: Sirius 7
$19.29 Price reduced from $52.66 to
Clearance Sale! ⓘ
Connecting Rod: 37SZ-H Connecting Rod: 37SZ-H
3.6 out of 5 Customer Rating
Connecting Rod: 37SZ-H
$22.04
Crankshaft: 55AX Crankshaft: 55AX
4.4 out of 5 Customer Rating
Crankshaft: 55AX
$55.12
Mixture Control Screw: #2F and #2FB Mixture Control Screw: #2F and #2FB
5 out of 5 Customer Rating
Mixture Control Screw: #2F and #2FB
$9.44
Needle Holder FT-120-300 Needle Holder FT-120-300
4 out of 5 Customer Rating
Needle Holder FT-120-300
$3.54 Price reduced from $11.80 to
Clearance Sale! ⓘ
Rear Housing: GT60 Rear Housing: GT60
4.4 out of 5 Customer Rating
Rear Housing: GT60
$87.18
Rocker Cover: 120 Surpass Rocker Cover: 120 Surpass
4.4 out of 5 Customer Rating
Rocker Cover: 120 Surpass
$14.73
Rocker Cover: GF30 Rocker Cover: GF30
3.6 out of 5 Customer Rating
Rocker Cover: GF30
$5.72 Price reduced from $19.05 to
Clearance Sale! ⓘ
Throttle Lever #2F #2FB Throttle Lever #2F #2FB
4.8 out of 5 Customer Rating
Throttle Lever #2F #2FB
$7.49
Head Gasket: 0.1, 0.15, R2101 Speed Head Gasket: 0.1, 0.15, R2101 Speed
4 out of 5 Customer Rating
Head Gasket: 0.1, 0.15, R2101 Speed
$10.94
Metering Needle Assembly 18TM Metering Needle Assembly 18TM
3.6 out of 5 Customer Rating
Metering Needle Assembly 18TM
$16.09
Piston Pin: 19XZ-B Speed Piston Pin: 19XZ-B Speed
3.6 out of 5 Customer Rating
Piston Pin: 19XZ-B Speed
$8.61
Screw Set (8): 15CV-A Screw Set (8): 15CV-A
5 out of 5 Customer Rating
Screw Set (8): 15CV-A
$9.44
Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition
5 out of 5 Customer Rating
Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition
$22.11
Crankshaft: 28XZ Crankshaft: 28XZ
4 out of 5 Customer Rating
Crankshaft: 28XZ
$131.09
Inner Head: 21XZ-R Speed Inner Head: 21XZ-R Speed
3.6 out of 5 Customer Rating
Inner Head: 21XZ-R Speed
$57.96
Carburetor Reducer 8mm, Red: Speed 21 V-Spec Carburetor Reducer 8mm, Red: Speed 21 V-Spec
4 out of 5 Customer Rating
Carburetor Reducer 8mm, Red: Speed 21 V-Spec
$21.10
Crankshaft: 21XZ-R Crankshaft: 21XZ-R
4.2 out of 5 Customer Rating
Crankshaft: 21XZ-R
$144.99
Head Gasket: 30VG Head Gasket: 30VG
4.4 out of 5 Customer Rating
Head Gasket: 30VG
$7.46
Mixture Control Valve 18TM Mixture Control Valve 18TM
4.4 out of 5 Customer Rating
Mixture Control Valve 18TM
$14.73
Metering Needle Assembly: 30VG Metering Needle Assembly: 30VG
5 out of 5 Customer Rating
Metering Needle Assembly: 30VG
$19.14
Locknut Set: FT, FR5 Locknut Set: FT, FR5
4.1 out of 5 Customer Rating
Locknut Set: FT, FR5
$41.12
Cam Cover: 56 FS Cam Cover: 56 FS
4.5 out of 5 Customer Rating
Cam Cover: 56 FS
$3.57 Price reduced from $11.91 to
Clearance Sale! ⓘ
Carburetor Body: 37SZ-H Carburetor Body: 37SZ-H
3.3 out of 5 Customer Rating
Carburetor Body: 37SZ-H
$12.04 Price reduced from $40.12 to
Clearance Sale! ⓘ
Slide Valve 2 (21M) Slide Valve 2 (21M)
5 out of 5 Customer Rating
Slide Valve 2 (21M)
$32.99
Nipple: GGT10 Nipple: GGT10
4.5 out of 5 Customer Rating
Nipple: GGT10
$7.57 Price reduced from $25.25 to
Clearance Sale! ⓘ
Camshaft Bearing: F 40-120 Camshaft Bearing: F 40-120
3.1 out of 5 Customer Rating
Camshaft Bearing: F 40-120
$17.16
Crankcase: FS81 Alpha Crankcase: FS81 Alpha
4.1 out of 5 Customer Rating
Crankcase: FS81 Alpha
$87.19
Crankshaft: FT-120 160 Crankshaft: FT-120 160
4.1 out of 5 Customer Rating
Crankshaft: FT-120 160
$87.53 Price reduced from $199.31 to
Clearance Sale! ⓘ
Insulator, 60K Insulator, 60K
3.7 out of 5 Customer Rating
Insulator, 60K
$19.05
Cylinder Head Gasket: 25AX Cylinder Head Gasket: 25AX
5 out of 5 Customer Rating
Cylinder Head Gasket: 25AX
$6.49
Gasket Head: 46AXII Gasket Head: 46AXII
4.1 out of 5 Customer Rating
Gasket Head: 46AXII
$6.49
Intake Pipe Left: FT-120 240 Intake Pipe Left: FT-120 240
4.1 out of 5 Customer Rating
Intake Pipe Left: FT-120 240
$21.10
Muffler Assembly Screw F-4050: FS-62V Muffler Assembly Screw F-4050: FS-62V
4.7 out of 5 Customer Rating
Muffler Assembly Screw F-4050: FS-62V
$2.85 Price reduced from $9.49 to
Clearance Sale! ⓘ
Shaft Throttle WLA-2: GT55 Shaft Throttle WLA-2: GT55
5 out of 5 Customer Rating
Shaft Throttle WLA-2: GT55
$29.60
Cover Plate: FS-62V Cover Plate: FS-62V
4.5 out of 5 Customer Rating
Cover Plate: FS-62V
$4.73 Price reduced from $15.76 to
Clearance Sale! ⓘ
Crankshaft: 70SZ-H Crankshaft: 70SZ-H
3.3 out of 5 Customer Rating
Crankshaft: 70SZ-H
$20.40 Price reduced from $67.99 to
Clearance Sale! ⓘ
Crankshaft: GGT10 Crankshaft: GGT10
3.7 out of 5 Customer Rating
Crankshaft: GGT10
$19.84 Price reduced from $66.13 to
Clearance Sale! ⓘ
Drive Washer: FS-62V Drive Washer: FS-62V
4.5 out of 5 Customer Rating
Drive Washer: FS-62V
$10.94
Head Gasket: 55HZ Hyper Head Gasket: 55HZ Hyper
5 out of 5 Customer Rating
Head Gasket: 55HZ Hyper
$6.49
Intake Manifold: FS-95V Intake Manifold: FS-95V
3.7 out of 5 Customer Rating
Intake Manifold: FS-95V
$34.76
Piston Ring: 200 Surpass Piston Ring: 200 Surpass
4.7 out of 5 Customer Rating
Piston Ring: 200 Surpass
$37.80
Stator Assembly: 5010-810 Stator Assembly: 5010-810
5 out of 5 Customer Rating
Stator Assembly: 5010-810
$67.99
Crankshaft Clamp: 32-46 Crankshaft Clamp: 32-46
5 out of 5 Customer Rating
Crankshaft Clamp: 32-46
$25.44
Carburetor Body: #60J Carburetor Body: #60J
4.1 out of 5 Customer Rating
Carburetor Body: #60J
$21.10
Carburetor Rotor: #60W, FL70 Carburetor Rotor: #60W, FL70
4.1 out of 5 Customer Rating
Carburetor Rotor: #60W, FL70
$15.99
Connecting Rod: FS81 Alpha Connecting Rod: FS81 Alpha
3.9 out of 5 Customer Rating
Connecting Rod: FS81 Alpha
$27.29
Connecting Rod: GGT10 Connecting Rod: GGT10
4.9 out of 5 Customer Rating
Connecting Rod: GGT10
$48.47
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