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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1,086-1,133 of 1,758 Results
Fuel Inlet Nipple: 12-240 Fuel Inlet Nipple: 12-240
4.9 out of 5 Customer Rating
$6.49
Ignition Module IG-02: GT33 Ignition Module IG-02: GT33
5 out of 5 Customer Rating
$104.01
Nozzle: 15FP-S RN Nozzle: 15FP-S RN
5 out of 5 Customer Rating
$9.85
O-Ring 10.5mm: GT55 O-Ring 10.5mm: GT55
5 out of 5 Customer Rating
$6.49
Piston Pin: 160FX Piston Pin: 160FX
5 out of 5 Customer Rating
$19.14
Prop Nut 1/4 20-61 Prop Nut 1/4 20-61
4.7 out of 5 Customer Rating
$6.49
Screw Set (10): 46AX 55AX Screw Set (10): 46AX 55AX
5 out of 5 Customer Rating
$10.86
Throttle Arm Assembly: 40L, 55HZ Hyper Throttle Arm Assembly: 40L, 55HZ Hyper
5 out of 5 Customer Rating
$7.46
Valve Spring: FS-70 91SII Valve Spring: FS-70 91SII
5 out of 5 Customer Rating
$6.49
Stator Assembly: 5025-375 .50 Stator Assembly: 5025-375 .50
4.7 out of 5 Customer Rating
$27.90 Price reduced from $92.99 to
Clearance Sale!
M16 In-Cowl Exhaust Header Pipe Side 60D: FS20S M16 In-Cowl Exhaust Header Pipe Side 60D: FS20S
5 out of 5 Customer Rating
$14.55 Price reduced from $48.51 to
Clearance Sale!
Motor Mount: FS91SII, FS110 Pump Motor Mount: FS91SII, FS110 Pump
4.1 out of 5 Customer Rating
$44.22
Rear Bearing: 61-300 Rear Bearing: 61-300
4.5 out of 5 Customer Rating
$22.16
Cam Cover: FS-62V Cam Cover: FS-62V
4.5 out of 5 Customer Rating
$3.57 Price reduced from $11.91 to
Clearance Sale!
Carburetor Body: 61C, 95AX Carburetor Body: 61C, 95AX
5 out of 5 Customer Rating
$14.55 Price reduced from $48.51 to
Clearance Sale!
Connecting Rod: FT-120, 160 Connecting Rod: FT-120, 160
5 out of 5 Customer Rating
$67.22
Connecting Rod: GT15HZ Connecting Rod: GT15HZ
3.1 out of 5 Customer Rating
$17.33 Price reduced from $57.77 to
Clearance Sale!
Crankshaft: 18TZ-TX Crankshaft: 18TZ-TX
3.3 out of 5 Customer Rating
$60.65
Cylinder & Piston: B21 Speed Adam Drake Cylinder & Piston: B21 Speed Adam Drake
4.1 out of 5 Customer Rating
$188.33
Outer Head: Speed 21XZ-GT Outer Head: Speed 21XZ-GT
3.9 out of 5 Customer Rating
$30.76 Price reduced from $102.52 to
Clearance Sale!
Heat Sink Head: 21TM Heat Sink Head: 21TM
4.1 out of 5 Customer Rating
$80.41
Gasket Set: 25XZ Gasket Set: 25XZ
5 out of 5 Customer Rating
$7.99
Mixture Control Valve #20K Mixture Control Valve #20K
3.9 out of 5 Customer Rating
$19.05
Rotor Stop Screw #2FB #2F Rotor Stop Screw #2FB #2F
3.9 out of 5 Customer Rating
$6.45
Slide Valve 22C(B): Speed B2102 Slide Valve 22C(B): Speed B2102
4.7 out of 5 Customer Rating
$10.08 Price reduced from $33.61 to
Clearance Sale!
Crankcase O.S. Speed T1204 Crankcase O.S. Speed T1204
3.5 out of 5 Customer Rating
$86.74
Outer Head O.S. Speed B21 Adam Drake Edition 3 Outer Head O.S. Speed B21 Adam Drake Edition 3
3.1 out of 5 Customer Rating
$97.99
M2001SC Manifold: 21XZ-R, 21VG M2001SC Manifold: 21XZ-R, 21VG
5 out of 5 Customer Rating
$67.39
Crankshaft: B2101 Speed Crankshaft: B2101 Speed
4.5 out of 5 Customer Rating
$205.99
O.S. Cylinder Piston Rod Set Speed: T1203 O.S. Cylinder Piston Rod Set Speed: T1203
3.3 out of 5 Customer Rating
$176.79
Outerhead: 21XR-B Version II Outerhead: 21XR-B Version II
3.3 out of 5 Customer Rating
$24.09 Price reduced from $80.29 to
Clearance Sale!
O.S. Dust Cover 21E 21F 22D 22J O.S. Dust Cover 21E 21F 22D 22J
4.7 out of 5 Customer Rating
$11.91
Carburetor 40L: 55HZ Hyper Carburetor 40L: 55HZ Hyper
4 out of 5 Customer Rating
$152.36
Carburetor Body: 70R, FS155A-P Carburetor Body: 70R, FS155A-P
5 out of 5 Customer Rating
$97.81
Cover Plate: GGT10 Cover Plate: GGT10
3.4 out of 5 Customer Rating
$6.68 Price reduced from $22.26 to
Clearance Sale!
Cylinder Head: 56 FS Cylinder Head: 56 FS
5 out of 5 Customer Rating
$63.20
Cylinder Jacket: FT-160 Cylinder Jacket: FT-160
4 out of 5 Customer Rating
$70.37
Cylinder Liner: 56 FS Cylinder Liner: 56 FS
3.6 out of 5 Customer Rating
$9.03 Price reduced from $30.10 to
Clearance Sale!
Exhaust Pipe Assembly: T-120 160 Exhaust Pipe Assembly: T-120 160
3.6 out of 5 Customer Rating
$22.04
Mixture Control Valve #70A:1.40RX Mixture Control Valve #70A:1.40RX
5 out of 5 Customer Rating
$25.44
Exhaust Header Pipe Nut: 200 Surpass Exhaust Header Pipe Nut: 200 Surpass
5 out of 5 Customer Rating
$1.95 Price reduced from $6.49 to
Clearance Sale!
Mix Control Valve Assembly: #60 Mix Control Valve Assembly: #60
4.6 out of 5 Customer Rating
$25.29
Needle Assembly #60R Needle Assembly #60R
4 out of 5 Customer Rating
$22.04
Piston Pin Retainer: GT15HZ Piston Pin Retainer: GT15HZ
5 out of 5 Customer Rating
$2.24 Price reduced from $7.46 to
Clearance Sale!
Rocker Arm: FS-70 Ultimate Rocker Arm: FS-70 Ultimate
5 out of 5 Customer Rating
$24.99
Rocker Arm Thrust Washer: Sirius 7 Rocker Arm Thrust Washer: Sirius 7
5 out of 5 Customer Rating
$1.95 Price reduced from $6.49 to
Clearance Sale!
Cylinder Head Screws (10): 120AX Cylinder Head Screws (10): 120AX
5 out of 5 Customer Rating
$9.85
Muffler #871: 10-15 Muffler #871: 10-15
4.8 out of 5 Customer Rating
$22.04