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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241-288 of 1,758 Results
Cylinder Liner: 50SX-H Cylinder Liner: 50SX-H
4.8 out of 5 Customer Rating
Cylinder Liner: 50SX-H
$37.47
Cylinder Liner: 91SZ-H Cylinder Liner: 91SZ-H
4.8 out of 5 Customer Rating
Cylinder Liner: 91SZ-H
$99.65
Cylinder Liner: GT33 Cylinder Liner: GT33
3.6 out of 5 Customer Rating
Cylinder Liner: GT33
$23.48 Price reduced from $78.25 to
Clearance Sale! ⓘ
Head Gasket: 15CV Head Gasket: 15CV
4.8 out of 5 Customer Rating
Head Gasket: 15CV
$6.49
Head Gasket: 25LA Head Gasket: 25LA
5 out of 5 Customer Rating
Head Gasket: 25LA
$6.49
Cylinder Head Gasket: 35AX Cylinder Head Gasket: 35AX
3.6 out of 5 Customer Rating
Cylinder Head Gasket: 35AX
$6.49
Drive Gear Screw: 240-300 Drive Gear Screw: 240-300
3.6 out of 5 Customer Rating
Drive Gear Screw: 240-300
$6.49
Drive Shaft: Sirius 7 Drive Shaft: Sirius 7
4.4 out of 5 Customer Rating
Drive Shaft: Sirius 7
$10.46 Price reduced from $34.86 to
Clearance Sale! ⓘ
Head Gasket: FT-160 Head Gasket: FT-160
4.4 out of 5 Customer Rating
Head Gasket: FT-160
$6.45
Head Gasket: FR5 Head Gasket: FR5
3.6 out of 5 Customer Rating
Head Gasket: FR5
$11.72
Drive Washer: GT22 Drive Washer: GT22
4 out of 5 Customer Rating
Drive Washer: GT22
$39.91
Dust Cap Set: 12-30 Class Dust Cap Set: 12-30 Class
3.6 out of 5 Customer Rating
Dust Cap Set: 12-30 Class
$9.85
Exhaust Joint Nut: FS-120 Surpass Exhaust Joint Nut: FS-120 Surpass
4.4 out of 5 Customer Rating
Exhaust Joint Nut: FS-120 Surpass
$8.49
Collector Exhaust Pipe: IL-300 Dia Star Collector Exhaust Pipe: IL-300 Dia Star
5 out of 5 Customer Rating
Collector Exhaust Pipe: IL-300 Dia Star
$411.70
Case Gasket: GT60 Case Gasket: GT60
3.4 out of 5 Customer Rating
Case Gasket: GT60
$7.46
Super Can Filter, Small Super Can Filter, Small
4.4 out of 5 Customer Rating
Super Can Filter, Small
$11.80
Piston: FS110A Piston: FS110A
4.4 out of 5 Customer Rating
Piston: FS110A
$48.51
Intake Manifold: FS-120II Intake Manifold: FS-120II
3.6 out of 5 Customer Rating
Intake Manifold: FS-120II
$8.85 Price reduced from $29.49 to
Clearance Sale! ⓘ
Intake Pipe AS-R: FT-240 Intake Pipe AS-R: FT-240
4.8 out of 5 Customer Rating
Intake Pipe AS-R: FT-240
$22.16
Head Gasket FS155A-P Head Gasket FS155A-P
4.4 out of 5 Customer Rating
Head Gasket FS155A-P
$6.49
Piston: GT15 Piston: GT15
4 out of 5 Customer Rating
Piston: GT15
$17.33 Price reduced from $57.78 to
Clearance Sale! ⓘ
Cylinder Head: 120AX Cylinder Head: 120AX
5 out of 5 Customer Rating
Cylinder Head: 120AX
$57.78
Cylinder Head: FS110A Cylinder Head: FS110A
3.4 out of 5 Customer Rating
Cylinder Head: FS110A
$87.19
Cylinder Head: FS-91-P Cylinder Head: FS-91-P
4.8 out of 5 Customer Rating
Cylinder Head: FS-91-P
$81.94
Inner Head: R2102 Speed Inner Head: R2102 Speed
4 out of 5 Customer Rating
Inner Head: R2102 Speed
$51.64
Needle Valve Holder 61ER Needle Valve Holder 61ER
4 out of 5 Customer Rating
Needle Valve Holder 61ER
$11.80
Piston Pin: GGT10 Piston Pin: GGT10
4.4 out of 5 Customer Rating
Piston Pin: GGT10
$22.30
Piston Pin: 19XZ-B Speed Piston Pin: 19XZ-B Speed
3.6 out of 5 Customer Rating
Piston Pin: 19XZ-B Speed
$8.61
Cylinder Liner: 70SZ-H Cylinder Liner: 70SZ-H
4 out of 5 Customer Rating
Cylinder Liner: 70SZ-H
$29.90 Price reduced from $99.65 to
Clearance Sale! ⓘ
Cylinder Liner: FS110A Cylinder Liner: FS110A
5 out of 5 Customer Rating
Cylinder Liner: FS110A
$49.46
Cylinder Liner: GT22 Cylinder Liner: GT22
4.4 out of 5 Customer Rating
Cylinder Liner: GT22
$69.76
Needle Assembly #60R Needle Assembly #60R
4 out of 5 Customer Rating
Needle Assembly #60R
$22.04
Needle Valve Assembly #10J #10M Needle Valve Assembly #10J #10M
4.4 out of 5 Customer Rating
Needle Valve Assembly #10J #10M
$26.24
Carburetor Gasket: GT15HZ Carburetor Gasket: GT15HZ
3.4 out of 5 Customer Rating
Carburetor Gasket: GT15HZ
$10.94
Cylinder Liner: FT-300 Cylinder Liner: FT-300
5 out of 5 Customer Rating
Cylinder Liner: FT-300
$59.99
Drive Washer: 15LA Drive Washer: 15LA
4.4 out of 5 Customer Rating
Drive Washer: 15LA
$6.49
Drive Washer: 25LA-S Drive Washer: 25LA-S
4.8 out of 5 Customer Rating
Drive Washer: 25LA-S
$6.49
Drive Washer: FS155A-P Drive Washer: FS155A-P
4 out of 5 Customer Rating
Drive Washer: FS155A-P
$28.45
Dust Cover: #2BK Dust Cover: #2BK
4 out of 5 Customer Rating
Dust Cover: #2BK
$10.86
Mixture Control Screw #10ER Mixture Control Screw #10ER
5 out of 5 Customer Rating
Mixture Control Screw #10ER
$9.85
Gasket Head Aluminum, .2mm: 19XZ-B Speed Gasket Head Aluminum, .2mm: 19XZ-B Speed
5 out of 5 Customer Rating
Gasket Head Aluminum, .2mm: 19XZ-B Speed
$5.31
Pulse Spacer: GGT10 Pulse Spacer: GGT10
5 out of 5 Customer Rating
Pulse Spacer: GGT10
$17.11
Exhaust Valve Assembly: FS-70 Ultimate Exhaust Valve Assembly: FS-70 Ultimate
5 out of 5 Customer Rating
Exhaust Valve Assembly: FS-70 Ultimate
$40.12
Dust Cap Set, 10mm (3) Dust Cap Set, 10mm (3)
4.4 out of 5 Customer Rating
Dust Cap Set, 10mm (3)
$2.96 Price reduced from $9.85 to
Clearance Sale! ⓘ
Silencer Body: 200 Surpass Silencer Body: 200 Surpass
4.4 out of 5 Customer Rating
Silencer Body: 200 Surpass
$87.21
Silencer Body: 56 FS Silencer Body: 56 FS
3.6 out of 5 Customer Rating
Silencer Body: 56 FS
$44.22
Nozzle Screw: FS-40 Nozzle Screw: FS-40
5 out of 5 Customer Rating
Nozzle Screw: FS-40
$6.49
Silencer O-Ring E3070: 46AX 55AX Silencer O-Ring E3070: 46AX 55AX
4.4 out of 5 Customer Rating
Silencer O-Ring E3070: 46AX 55AX
$7.46
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