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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798-845 of 1,758 Results
Muffler Body F-5050: FS-95V Muffler Body F-5050: FS-95V
5 out of 5 Customer Rating
Muffler Body F-5050: FS-95V
$52.73
Piston Ring: 56 FS Piston Ring: 56 FS
3.6 out of 5 Customer Rating
Piston Ring: 56 FS
$8.85 Price reduced from $29.49 to
Clearance Sale! ⓘ
Carburetor Body: #60P, FS-91 Surpass II Carburetor Body: #60P, FS-91 Surpass II
5 out of 5 Customer Rating
Carburetor Body: #60P, FS-91 Surpass II
$44.22
T-2090SC Tune Pipe: 21XZ-B, 21VZ-B, 25XZ, 30VG T-2090SC Tune Pipe: 21XZ-B, 21VZ-B, 25XZ, 30VG
3.3 out of 5 Customer Rating
T-2090SC Tune Pipe: 21XZ-B, 21VZ-B, 25XZ, 30VG
$173.43
Cover Plate: 15CV-A Cover Plate: 15CV-A
5 out of 5 Customer Rating
Cover Plate: 15CV-A
$10.99
Cylinder Head: 25FX Cylinder Head: 25FX
5 out of 5 Customer Rating
Cylinder Head: 25FX
$16.09
Exhaust Cam: Sirius 7 Exhaust Cam: Sirius 7
3.9 out of 5 Customer Rating
Exhaust Cam: Sirius 7
$21.11 Price reduced from $70.37 to
Clearance Sale! ⓘ
Cylinder & Piston: 46AX Cylinder & Piston: 46AX
3.7 out of 5 Customer Rating
Cylinder & Piston: 46AX
$99.51
Cylinder & Piston Assembly O.S. Speed R2106 Cylinder & Piston Assembly O.S. Speed R2106
5 out of 5 Customer Rating
Cylinder & Piston Assembly O.S. Speed R2106
$204.99
Crankcase: 21XZ-GT Speed Crankcase: 21XZ-GT Speed
5 out of 5 Customer Rating
Crankcase: 21XZ-GT Speed
$54.48 Price reduced from $181.59 to
Clearance Sale! ⓘ
Outer Head: 21XZ-R Outer Head: 21XZ-R
4.8 out of 5 Customer Rating
Outer Head: 21XZ-R
$69.99
Crankshaft: 25FX Crankshaft: 25FX
5 out of 5 Customer Rating
Crankshaft: 25FX
$11.61 Price reduced from $38.71 to
Clearance Sale! ⓘ
Crankcase: 21XR-B Version II Crankcase: 21XR-B Version II
4.5 out of 5 Customer Rating
Crankcase: 21XR-B Version II
$21.46 Price reduced from $71.54 to
Clearance Sale! ⓘ
Lock Cone: 40P/60GP Lock Cone: 40P/60GP
4.7 out of 5 Customer Rating
Lock Cone: 40P/60GP
$26.24
Rocker Arm: F61-300 Rocker Arm: F61-300
5 out of 5 Customer Rating
Rocker Arm: F61-300
$27.29
Cam Cover: FS-120 Surpass Cam Cover: FS-120 Surpass
4.1 out of 5 Customer Rating
Cam Cover: FS-120 Surpass
$10.86
Cir Clip In-Flight Needle Valve Cir Clip In-Flight Needle Valve
5 out of 5 Customer Rating
Cir Clip In-Flight Needle Valve
$6.49
Rear Bearing: 12TR Rear Bearing: 12TR
5 out of 5 Customer Rating
Rear Bearing: 12TR
$61.99
Ignition Module IG-02: GT33 Ignition Module IG-02: GT33
5 out of 5 Customer Rating
Ignition Module IG-02: GT33
$104.01
O.S. Dust Cover 21E 21F 22D 22J O.S. Dust Cover 21E 21F 22D 22J
4.7 out of 5 Customer Rating
O.S. Dust Cover 21E 21F 22D 22J
$11.91
Muffler Assembly Screw F-5050 FS-95V Muffler Assembly Screw F-5050 FS-95V
3.6 out of 5 Customer Rating
Muffler Assembly Screw F-5050 FS-95V
$10.94
Piston Pin: 60-61FSR SX Piston Pin: 60-61FSR SX
4.1 out of 5 Customer Rating
Piston Pin: 60-61FSR SX
$9.85
Gasket Set: 160FX Gasket Set: 160FX
4 out of 5 Customer Rating
Gasket Set: 160FX
$10.94
Speed Hex Wrench Driver 2.0mm Speed Hex Wrench Driver 2.0mm
3.3 out of 5 Customer Rating
Speed Hex Wrench Driver 2.0mm
$36.81
O.S. Metering Needle Assembly 22D Speed B2103 O.S. Metering Needle Assembly 22D Speed B2103
3.4 out of 5 Customer Rating
O.S. Metering Needle Assembly 22D Speed B2103
$19.14
Piston Pin: FS-95V Piston Pin: FS-95V
5 out of 5 Customer Rating
Piston Pin: FS-95V
$11.95
Needle Valve Holder Assembly: 91SZ-H Hyper Needle Valve Holder Assembly: 91SZ-H Hyper
3.7 out of 5 Customer Rating
Needle Valve Holder Assembly: 91SZ-H Hyper
$19.05
#10 A5 Glow Plug Cold Air #10 A5 Glow Plug Cold Air
3.3 out of 5 Customer Rating
#10 A5 Glow Plug Cold Air
$13.99
Thermo Insulator 21J3 Thermo Insulator 21J3
4.6 out of 5 Customer Rating
Thermo Insulator 21J3
$19.14
Carburetor HAD313: GT60 Carburetor HAD313: GT60
5 out of 5 Customer Rating
Carburetor HAD313: GT60
$190.09
Piston: 70SZ-H Piston: 70SZ-H
4.1 out of 5 Customer Rating
Piston: 70SZ-H
$48.51
Mixture Control Valve: 46AXII Mixture Control Valve: 46AXII
4.4 out of 5 Customer Rating
Mixture Control Valve: 46AXII
$30.44
Valve: FS-95V Valve: FS-95V
5 out of 5 Customer Rating
Valve: FS-95V
$25.44
Connecting Rod: 18TM Connecting Rod: 18TM
4.8 out of 5 Customer Rating
Connecting Rod: 18TM
$48.51
Control Arm: #9B Control Arm: #9B
4.5 out of 5 Customer Rating
Control Arm: #9B
$14.73
Muffler E-5040: GT22 Muffler E-5040: GT22
5 out of 5 Customer Rating
Muffler E-5040: GT22
$91.51
Piston: 61-300 Piston: 61-300
4.7 out of 5 Customer Rating
Piston: 61-300
$38.84
Induction Silencer .12/.21: INS Induction Silencer .12/.21: INS
5 out of 5 Customer Rating
Induction Silencer .12/.21: INS
$46.39
Carburetor 21J3-B: Speed B21 Adam Drake Carburetor 21J3-B: Speed B21 Adam Drake
4 out of 5 Customer Rating
Carburetor 21J3-B: Speed B21 Adam Drake
$162.92
Under Cover Gasket: IL-300 Dia-Star Under Cover Gasket: IL-300 Dia-Star
5 out of 5 Customer Rating
Under Cover Gasket: IL-300 Dia-Star
$8.49
Crankshaft: GT15 Crankshaft: GT15
3.3 out of 5 Customer Rating
Crankshaft: GT15
$22.49 Price reduced from $74.96 to
Clearance Sale! ⓘ
Cylinder Piston Assembly: R21 Cylinder Piston Assembly: R21
4.4 out of 5 Customer Rating
Cylinder Piston Assembly: R21
$39.83 Price reduced from $132.77 to
Clearance Sale! ⓘ
Carburetor Body: 21M(B), 21XZ-R Speed Carburetor Body: 21M(B), 21XZ-R Speed
4 out of 5 Customer Rating
Carburetor Body: 21M(B), 21XZ-R Speed
$29.34 Price reduced from $97.81 to
Clearance Sale! ⓘ
TR02 Tuned Silencer Set EFRA2165 TR02 Tuned Silencer Set EFRA2165
4.7 out of 5 Customer Rating
TR02 Tuned Silencer Set EFRA2165
$227.84
O.S. Inner Head with O-Ring Speed B2103 Type R & S O.S. Inner Head with O-Ring Speed B2103 Type R & S
5 out of 5 Customer Rating
O.S. Inner Head with O-Ring Speed B2103 Type R & S
$57.75
Pushrod: 200 Surpass Pushrod: 200 Surpass
3.3 out of 5 Customer Rating
Pushrod: 200 Surpass
$10.86
Cylinder Rebuild Kit: 21XR-B Cylinder Rebuild Kit: 21XR-B
4.1 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XR-B
$44.98 Price reduced from $149.93 to
Clearance Sale! ⓘ
Valve Assembly Intake: FS-91 Surpass Valve Assembly Intake: FS-91 Surpass
3.3 out of 5 Customer Rating
Valve Assembly Intake: FS-91 Surpass
$38.01
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