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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1,225-1,248 of 1,605 Results
Locknut Set: FS-91 Surpass Locknut Set: FS-91 Surpass
5 out of 5 Customer Rating
Locknut Set: FS-91 Surpass
$24.23
Needle #7G #7D #7H Needle #7G #7D #7H
4 out of 5 Customer Rating
Needle #7G #7D #7H
$13.78
Screw Metering WLA-2: GT55 Screw Metering WLA-2: GT55
4 out of 5 Customer Rating
Screw Metering WLA-2: GT55
$5.99
O-Ring Large: 120-300 O-Ring Large: 120-300
3.6 out of 5 Customer Rating
O-Ring Large: 120-300
$6.49
O-Ring S3-FKM 61H: GT15 O-Ring S3-FKM 61H: GT15
5 out of 5 Customer Rating
O-Ring S3-FKM 61H: GT15
$10.94
O-Ring 1.2x54mm: GT55 O-Ring 1.2x54mm: GT55
3.6 out of 5 Customer Rating
O-Ring 1.2x54mm: GT55
$7.46
Piston Pin Retainer: 50SX-H Piston Pin Retainer: 50SX-H
4.4 out of 5 Customer Rating
Piston Pin Retainer: 50SX-H
$7.46
Piston: FS110A Piston: FS110A
4.4 out of 5 Customer Rating
Piston: FS110A
$48.51
Piston Pin: 200 Surpass Piston Pin: 200 Surpass
4.4 out of 5 Customer Rating
Piston Pin: 200 Surpass
$19.22
Piston Ring: 91FX Piston Ring: 91FX
4.4 out of 5 Customer Rating
Piston Ring: 91FX
$26.24
Piston Ring: FT-300 Piston Ring: FT-300
5 out of 5 Customer Rating
Piston Ring: FT-300
$31.52
Prop Washer: 61-90 Prop Washer: 61-90
4 out of 5 Customer Rating
Prop Washer: 61-90
$6.49
Screw Set (34): FT-120 (34) Screw Set (34): FT-120 (34)
5 out of 5 Customer Rating
Screw Set (34): FT-120 (34)
$25.44
Screw Set (10): 61RX SX Screw Set (10): 61RX SX
5 out of 5 Customer Rating
Screw Set (10): 61RX SX
$13.78
Thrust Washer: BGX-3500 Thrust Washer: BGX-3500
4.8 out of 5 Customer Rating
Thrust Washer: BGX-3500
$6.49
Valve In Ex: 90-320 Valve In Ex: 90-320
3.6 out of 5 Customer Rating
Valve In Ex: 90-320
$36.85
Bearing R-1560X2ZZ Bearing R-1560X2ZZ
4 out of 5 Customer Rating
Bearing R-1560X2ZZ
$17.99
Carburetor Rotor 70T2: GF30 II Carburetor Rotor 70T2: GF30 II
4 out of 5 Customer Rating
Carburetor Rotor 70T2: GF30 II
$63.12
Pump Fixing Screw Assembly: 91SZ-H Hyper Pump Fixing Screw Assembly: 91SZ-H Hyper
4.2 out of 5 Customer Rating
Pump Fixing Screw Assembly: 91SZ-H Hyper
$5.70
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
Cylinder Liner: 50SX-H Cylinder Liner: 50SX-H
4.8 out of 5 Customer Rating
Cylinder Liner: 50SX-H
$37.47
Cylinder Liner: FS-70 Surpass Cylinder Liner: FS-70 Surpass
4.4 out of 5 Customer Rating
Cylinder Liner: FS-70 Surpass
$35.48
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