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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1,489-1,536 of 1,758 Results
Piston Ring: FS-91 FT-160 Piston Ring: FS-91 FT-160
4 out of 5 Customer Rating
$26.24
Reduction Gear Bearing: FR5 Reduction Gear Bearing: FR5
4 out of 5 Customer Rating
$8.90 Price reduced from $29.68 to
Clearance Sale!
Screw Fixing 4x40mm WLA-2 (1): GT55 Screw Fixing 4x40mm WLA-2 (1): GT55
5 out of 5 Customer Rating
$6.49
Throttle Link WLA-2: GT55 Throttle Link WLA-2: GT55
4.8 out of 5 Customer Rating
$10.99
Stator Assembly: 3820-1200 .25 Stator Assembly: 3820-1200 .25
4.4 out of 5 Customer Rating
$13.79 Price reduced from $45.99 to
Clearance Sale!
Carburetor #20M: 37SZ-H Carburetor #20M: 37SZ-H
5 out of 5 Customer Rating
$35.01 Price reduced from $87.21 to
Clearance Sale!
Carburetor 61D: 65AX Carburetor 61D: 65AX
3.4 out of 5 Customer Rating
$97.71
Muffler Extension: #842 Muffler Extension: #842
3.4 out of 5 Customer Rating
$11.72
Motor Mount: 65LA, 61-91FX, 75AX Motor Mount: 65LA, 61-91FX, 75AX
4 out of 5 Customer Rating
$40.12
Piston Ring: 70SZ-H Piston Ring: 70SZ-H
5 out of 5 Customer Rating
$26.24
Radial Mount Standoffs: Sirius 7 Radial Mount Standoffs: Sirius 7
3.4 out of 5 Customer Rating
$2.80 Price reduced from $9.44 to
Clearance Sale!
Powerboost Pipe: GT15HZ Powerboost Pipe: GT15HZ
5 out of 5 Customer Rating
$281.62
Carburetor Body: 70T, GF30 Carburetor Body: 70T, GF30
5 out of 5 Customer Rating
$97.90
Carburetor Rotor: #60M Carburetor Rotor: #60M
4.8 out of 5 Customer Rating
$10.49 Price reduced from $34.99 to
Clearance Sale!
70T Carburetor: GF30 Gasoline Engine 70T Carburetor: GF30 Gasoline Engine
3.6 out of 5 Customer Rating
$174.34
Connecting Rod: 12Z CV Connecting Rod: 12Z CV
5 out of 5 Customer Rating
$17.01
Pushrod Cover O-Ring: 56 FS Pushrod Cover O-Ring: 56 FS
4.8 out of 5 Customer Rating
$6.49
Cover Plate: 55AX Cover Plate: 55AX
3.4 out of 5 Customer Rating
$17.16
Cover Plate: 120AX Cover Plate: 120AX
4 out of 5 Customer Rating
$17.16
Crankcase: FS110A Crankcase: FS110A
5 out of 5 Customer Rating
$119.86
Cylinder & Piston Assembly: 75AX Cylinder & Piston Assembly: 75AX
4.4 out of 5 Customer Rating
$138.19
Cylinder Liner: GT33 Cylinder Liner: GT33
3.6 out of 5 Customer Rating
$23.48 Price reduced from $78.25 to
Clearance Sale!
Drive Shaft Bearing: Sirius 7 Drive Shaft Bearing: Sirius 7
5 out of 5 Customer Rating
$7.30 Price reduced from $24.36 to
Clearance Sale!
Drive Washer: 46AXII Drive Washer: 46AXII
3.6 out of 5 Customer Rating
$13.83
Drive Washer: FS72 Alpha Drive Washer: FS72 Alpha
4 out of 5 Customer Rating
$19.05
Link Pin E-Ring: Sirius 7 Link Pin E-Ring: Sirius 7
4.4 out of 5 Customer Rating
$6.49
Locknut Set: BGX 3500 Locknut Set: BGX 3500
3.2 out of 5 Customer Rating
$26.24
Needle Valve Assembly: 91SZ-H Hyper Needle Valve Assembly: 91SZ-H Hyper
5 out of 5 Customer Rating
$29.60
O-Ring Small #2K #2SB O-Ring Small #2K #2SB
4.4 out of 5 Customer Rating
$6.49
Piston: GGT10 Piston: GGT10
5 out of 5 Customer Rating
$52.58
Valve Collet: FS-120 Surpass Valve Collet: FS-120 Surpass
5 out of 5 Customer Rating
$10.86
Venturi: 15FP S Venturi: 15FP S
4 out of 5 Customer Rating
$9.85
Venturi: 55HZ, 105HZ Venturi: 55HZ, 105HZ
4 out of 5 Customer Rating
$22.04
Carburetor Retainer: 21EX-B, R Carburetor Retainer: 21EX-B, R
4 out of 5 Customer Rating
$11.87
Crankcase: 21XZ-B Crankcase: 21XZ-B
4.8 out of 5 Customer Rating
$124.99
Outer Head: T1201 Speed Outer Head: T1201 Speed
5 out of 5 Customer Rating
$30.73 Price reduced from $102.46 to
Clearance Sale!
Air Filter: INS Air Filter: INS
3.4 out of 5 Customer Rating
$40.99
Carb Reducer 5.5mm: #11H, #11HB, 12TZ Carb Reducer 5.5mm: #11H, #11HB, 12TZ
5 out of 5 Customer Rating
$11.80
Carburetor Body: 21J3 Carburetor Body: 21J3
4 out of 5 Customer Rating
$29.31 Price reduced from $97.70 to
Clearance Sale!
Carburetor Rotor: #11J Carburetor Rotor: #11J
5 out of 5 Customer Rating
$29.60
Connecting Rod: 21XR-B Version II Connecting Rod: 21XR-B Version II
4.8 out of 5 Customer Rating
$8.87 Price reduced from $29.56 to
Clearance Sale!
Crankcase: 21XZ-B Ver2 Crankcase: 21XZ-B Ver2
4.2 out of 5 Customer Rating
$124.95
Thermo Insulator, 11K: 18TM Thermo Insulator, 11K: 18TM
4 out of 5 Customer Rating
$19.14
Gasket Head, .1 Brass: 21XZ-R Gasket Head, .1 Brass: 21XZ-R
3.6 out of 5 Customer Rating
$6.49
Rear Adapter: 18TM Rear Adapter: 18TM
3.2 out of 5 Customer Rating
$19.05
Speed Flywheel Puller Speed Flywheel Puller
4 out of 5 Customer Rating
$48.34
Speed Hex Driver Replacement Tip 2.5 Speed Hex Driver Replacement Tip 2.5
3.6 out of 5 Customer Rating
$5.52 Price reduced from $18.39 to
Clearance Sale!
Outer Head O.S. Speed R2106 Outer Head O.S. Speed R2106
3.7 out of 5 Customer Rating
$124.99