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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1,585-1,632 of 1,758 Results
Crankshaft Bearing, Front: FS-91 Crankshaft Bearing, Front: FS-91
5 out of 5 Customer Rating
$26.34
Front Bearing: 61FX Front Bearing: 61FX
5 out of 5 Customer Rating
$22.16
Cam Follower: Sirius 7 Cam Follower: Sirius 7
4.1 out of 5 Customer Rating
$6.33 Price reduced from $21.12 to
Clearance Sale!
55HZ-R Conversion Set: 55HZ, 50SX 55HZ-R Conversion Set: 55HZ, 50SX
5 out of 5 Customer Rating
$81.31 Price reduced from $271.02 to
Clearance Sale!
Rear Adapter: 18CV-RX Rear Adapter: 18CV-RX
5 out of 5 Customer Rating
$17.08
Induction Silencer .12/.21: INS Induction Silencer .12/.21: INS
5 out of 5 Customer Rating
$46.39
Carburetor Body: 18TM Carburetor Body: 18TM
3.1 out of 5 Customer Rating
$46.31
Crankshaft: R2101 Speed Crankshaft: R2101 Speed
5 out of 5 Customer Rating
$59.79 Price reduced from $199.31 to
Clearance Sale!
Outer Cylinder Head: R2103 Speed Outer Cylinder Head: R2103 Speed
5 out of 5 Customer Rating
$30.71 Price reduced from $102.35 to
Clearance Sale!
Slide Valve 12F3: T1201 Speed Slide Valve 12F3: T1201 Speed
4.7 out of 5 Customer Rating
$11.71 Price reduced from $39.05 to
Clearance Sale!
Outer Head: O.S. Speed B2104 Outer Head: O.S. Speed B2104
3.1 out of 5 Customer Rating
$31.02 Price reduced from $103.41 to
Clearance Sale!
Carburetor 12F3: T1201 Speed Carburetor 12F3: T1201 Speed
3.1 out of 5 Customer Rating
$135.65
O.S. Carburetor Complete 22E(B)GT w o Reducer O.S. Carburetor Complete 22E(B)GT w o Reducer
3.3 out of 5 Customer Rating
$205.96
Cylinder & Piston: T2101 Speed Cylinder & Piston: T2101 Speed
5 out of 5 Customer Rating
$41.44 Price reduced from $138.14 to
Clearance Sale!
Needle 12F 11H 11K 12D Needle 12F 11H 11K 12D
5 out of 5 Customer Rating
$13.78
Speed Hex Wrench Driver 2.0mm Speed Hex Wrench Driver 2.0mm
3.3 out of 5 Customer Rating
$36.81
Needle Valve Holder 61ER Needle Valve Holder 61ER
4 out of 5 Customer Rating
$11.80
Metering Needle 21M Metering Needle 21M
4.4 out of 5 Customer Rating
$19.14
105HZ-R DRS 1.05 Helicopter Engine 105HZ-R DRS 1.05 Helicopter Engine
4 out of 5 Customer Rating
$722.99
Carburetor Reducer 6mm, Red: B2101 Speed Carburetor Reducer 6mm, Red: B2101 Speed
5 out of 5 Customer Rating
$21.10
R5 Glow Plug Cold On-Road R5 Glow Plug Cold On-Road
4.4 out of 5 Customer Rating
$18.99
T-1070SC L52 Pipe Set T-1070SC L52 Pipe Set
4.4 out of 5 Customer Rating
$190.29
Rear Bearing: 19XZ-B Speed Rear Bearing: 19XZ-B Speed
4.8 out of 5 Customer Rating
$109.38
Carburetor Body: 21M Carburetor Body: 21M
4.8 out of 5 Customer Rating
$26.16 Price reduced from $87.21 to
Clearance Sale!
Cover Plate: T1201 Speed Cover Plate: T1201 Speed
5 out of 5 Customer Rating
$6.32 Price reduced from $21.08 to
Clearance Sale!
Outer Head: 12XZ Speed Spec 3 Outer Head: 12XZ Speed Spec 3
5 out of 5 Customer Rating
$92.99
Crankcase: O.S. Speed B2104 Crankcase: O.S. Speed B2104
4.2 out of 5 Customer Rating
$176.99
O.S. Carburetor 12F5(B) Speed: T1203 O.S. Carburetor 12F5(B) Speed: T1203
4.2 out of 5 Customer Rating
$125.13
O.S. Carburetor 22D (B) Without Reducer B2103 O.S. Carburetor 22D (B) Without Reducer B2103
4 out of 5 Customer Rating
$48.85 Price reduced from $162.83 to
Clearance Sale!
P5 Turbo Glow Very Hot Plug Off-Road P5 Turbo Glow Very Hot Plug Off-Road
3.4 out of 5 Customer Rating
$18.99
O.S. Thermo Insulator 21J3 O.S. Thermo Insulator 21J3
3.4 out of 5 Customer Rating
$14.99
Carburetor Complete 21M4(B) W/O Reducer Carburetor Complete 21M4(B) W/O Reducer
4.8 out of 5 Customer Rating
$176.99
Gasket Carburetor: #60B Gasket Carburetor: #60B
5 out of 5 Customer Rating
$6.49
Carburetor #10G: 15LA Carburetor #10G: 15LA
5 out of 5 Customer Rating
$25.29
Woodruff Key: 61S RFH Woodruff Key: 61S RFH
5 out of 5 Customer Rating
$7.46
Piston Pin: 60-61FSR SX Piston Pin: 60-61FSR SX
4.1 out of 5 Customer Rating
$9.85
Carburetor Dust Covers: #12FB, 12XZ Speed Carburetor Dust Covers: #12FB, 12XZ Speed
5 out of 5 Customer Rating
$7.46
Carburetor Screw: #4D4C2H Carburetor Screw: #4D4C2H
4.8 out of 5 Customer Rating
$6.49
Rear Bearing: 61-300 Rear Bearing: 61-300
4.5 out of 5 Customer Rating
$22.16
RP6 Turbo Glow Plug Medium On-Road RP6 Turbo Glow Plug Medium On-Road
4.5 out of 5 Customer Rating
$14.99
Locknut Set: FS-120 Surpass Locknut Set: FS-120 Surpass
5 out of 5 Customer Rating
$26.24
Speed Exhaust Seal Ring (10): B21 Speed Exhaust Seal Ring (10): B21
5 out of 5 Customer Rating
$38.86
CYLINDER/PISTON SET O.S. MAX-B21 CYLINDER/PISTON SET O.S. MAX-B21
4.5 out of 5 Customer Rating
$93.99
CYLINDER/PISTON/ROD SET: O.S. MAX-B21 CYLINDER/PISTON/ROD SET: O.S. MAX-B21
3.4 out of 5 Customer Rating
$124.99
Crankcase: O.S. MAX-B21 Crankcase: O.S. MAX-B21
5 out of 5 Customer Rating
$89.99
MIXTURE CONTROL VALVE ASSEMBLY 20K2
MIXTURE CONTROL VALVE ASSEMBLY 20K2
5 out of 5 Customer Rating
$12.49
Inner Head: O.S. MAX-B21 Inner Head: O.S. MAX-B21
5 out of 5 Customer Rating
$28.99
Carburetor Body: 22E Carburetor Body: 22E
4 out of 5 Customer Rating
$81.99