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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1,345-1,368 of 1,605 Results
Connecting Rod: 140RX Connecting Rod: 140RX
5 out of 5 Customer Rating
Connecting Rod: 140RX
$48.51
Drive Gear Screw: 240-300 Drive Gear Screw: 240-300
3.6 out of 5 Customer Rating
Drive Gear Screw: 240-300
$6.49
Inner Head With O-Ring: O.S. Speed B2104 Inner Head With O-Ring: O.S. Speed B2104
3.8 out of 5 Customer Rating
Inner Head With O-Ring: O.S. Speed B2104
$59.01
Outer Head: Speed 21 V-Spec Outer Head: Speed 21 V-Spec
3.4 out of 5 Customer Rating
Outer Head: Speed 21 V-Spec
$42.00 Price reduced from $139.99 to
Clearance Sale! ⓘ
Crankcase: T1201 Speed Crankcase: T1201 Speed
5 out of 5 Customer Rating
Crankcase: T1201 Speed
$87.17
Back Plate: 40-46 LA Back Plate: 40-46 LA
5 out of 5 Customer Rating
Back Plate: 40-46 LA
$11.80
Connecting Rod: FT-120, 160 Connecting Rod: FT-120, 160
5 out of 5 Customer Rating
Connecting Rod: FT-120, 160
$67.22
Bearing L-1050ZZ Bearing L-1050ZZ
3.3 out of 5 Customer Rating
Bearing L-1050ZZ
$17.99
Crankshaft: 120AX Special Crankshaft: 120AX Special
4.4 out of 5 Customer Rating
Crankshaft: 120AX Special
$102.45
Connecting Rod: FL-70 Connecting Rod: FL-70
5 out of 5 Customer Rating
Connecting Rod: FL-70
$21.10
Crankcase: R21 Crankcase: R21
4 out of 5 Customer Rating
Crankcase: R21
$136.57
Rotor Stop #4B #4D #4C Rotor Stop #4B #4D #4C
4.4 out of 5 Customer Rating
Rotor Stop #4B #4D #4C
$9.85
Pushrod: FS-95V Pushrod: FS-95V
4.2 out of 5 Customer Rating
Pushrod: FS-95V
$10.49
Cover Plate: 105HZ Cover Plate: 105HZ
4.2 out of 5 Customer Rating
Cover Plate: 105HZ
$22.30
Valve Spring Seat: FS-95V Valve Spring Seat: FS-95V
4.4 out of 5 Customer Rating
Valve Spring Seat: FS-95V
$6.49
Lock Washer 5mm Lock Washer 5mm
5 out of 5 Customer Rating
Lock Washer 5mm
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
202 Super Air Cleaner 202 Super Air Cleaner
4 out of 5 Customer Rating
202 Super Air Cleaner
$22.26
Crankcase: 25FX Crankcase: 25FX
5 out of 5 Customer Rating
Crankcase: 25FX
$44.10
Muffler Assembly F-5050: FS-95V Muffler Assembly F-5050: FS-95V
4.4 out of 5 Customer Rating
Muffler Assembly F-5050: FS-95V
$63.04
Carburetor Reducer 7.0MM AL2, Blue Carburetor Reducer 7.0MM AL2, Blue
5 out of 5 Customer Rating
Carburetor Reducer 7.0MM AL2, Blue
$20.05
Velocity Stack: GF40 Velocity Stack: GF40
5 out of 5 Customer Rating
Velocity Stack: GF40
$25.44
Cover Plate: GT55 Cover Plate: GT55
5 out of 5 Customer Rating
Cover Plate: GT55
$41.99
Carburetor Reducer AL2 5.5mm, Red: Speed T1202 Carburetor Reducer AL2 5.5mm, Red: Speed T1202
5 out of 5 Customer Rating
Carburetor Reducer AL2 5.5mm, Red: Speed T1202
$21.10
Needle Assembly #60R Needle Assembly #60R
4 out of 5 Customer Rating
Needle Assembly #60R
$22.04
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