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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433-456 of 1,812 Results
TR02 Tuned Silencer Set EFRA2165 TR02 Tuned Silencer Set EFRA2165
4.7 out of 5 Customer Rating
TR02 Tuned Silencer Set EFRA2165
$227.84
Inner Head: O.S.SPEED R21GT2 Inner Head: O.S.SPEED R21GT2
4.9 out of 5 Customer Rating
Inner Head: O.S.SPEED R21GT2
$57.99
Cover Plate: 12TG Cover Plate: 12TG
5 out of 5 Customer Rating
Cover Plate: 12TG
$11.80
Cover Plate: 105HX-R Cover Plate: 105HX-R
5 out of 5 Customer Rating
Cover Plate: 105HX-R
$28.45
Crankcase: 21XZ-R VII Crankcase: 21XZ-R VII
3.1 out of 5 Customer Rating
Crankcase: 21XZ-R VII
$152.36
O.S. Cylinder Piston Rod Set Speed B2103 Type R O.S. Cylinder Piston Rod Set Speed B2103 Type R
5 out of 5 Customer Rating
O.S. Cylinder Piston Rod Set Speed B2103 Type R
$242.95
Cylinder & Piston Assembly: 12XZ Cylinder & Piston Assembly: 12XZ
3.3 out of 5 Customer Rating
Cylinder & Piston Assembly: 12XZ
$99.51
Cylinder & Piston: 21XZ-B Speed Cylinder & Piston: 21XZ-B Speed
5 out of 5 Customer Rating
Cylinder & Piston: 21XZ-B Speed
$193.68
Inner Cylinder Head: 12XZ Inner Cylinder Head: 12XZ
4.1 out of 5 Customer Rating
Inner Cylinder Head: 12XZ
$32.56
Carburetor Dust Covers: #12FB, 12XZ Speed Carburetor Dust Covers: #12FB, 12XZ Speed
5 out of 5 Customer Rating
Carburetor Dust Covers: #12FB, 12XZ Speed
$7.46
Needle Valve Assembly #12FB: 12XZ Speed Needle Valve Assembly #12FB: 12XZ Speed
3.3 out of 5 Customer Rating
Needle Valve Assembly #12FB: 12XZ Speed
$27.29
Piston Pin Retainer: RX RZ XM Piston Pin Retainer: RX RZ XM
4.7 out of 5 Customer Rating
Piston Pin Retainer: RX RZ XM
$6.49
Slide Valve #21JS Slide Valve #21JS
3.9 out of 5 Customer Rating
Slide Valve #21JS
$32.56
Crankshaft: O.S. Speed B2104 Crankshaft: O.S. Speed B2104
5 out of 5 Customer Rating
Crankshaft: O.S. Speed B2104
$237.99
Connecting Rod: 21VZ-R Connecting Rod: 21VZ-R
5 out of 5 Customer Rating
Connecting Rod: 21VZ-R
$48.41
Connecting Rod: R2102, Speed 21XZ-GT Connecting Rod: R2102, Speed 21XZ-GT
3.3 out of 5 Customer Rating
Connecting Rod: R2102, Speed 21XZ-GT
$52.58
O.S. Cover Plate Speed: T1203 O.S. Cover Plate Speed: T1203
5 out of 5 Customer Rating
O.S. Cover Plate Speed: T1203
$17.99
O.S. Crankcase Speed: T1203 O.S. Crankcase Speed: T1203
4.1 out of 5 Customer Rating
O.S. Crankcase Speed: T1203
$79.99
Cylinder Rebuild Kit: 21XZ-B Speed Spec III Cylinder Rebuild Kit: 21XZ-B Speed Spec III
4.7 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XZ-B Speed Spec III
$221.55
Cylinder & Piston: 21XZ-GT Speed Cylinder & Piston: 21XZ-GT Speed
4.1 out of 5 Customer Rating
Cylinder & Piston: 21XZ-GT Speed
$177.63
Cylinder Rebuild Kit: 21XR-B Cylinder Rebuild Kit: 21XR-B
4.1 out of 5 Customer Rating
Cylinder Rebuild Kit: 21XR-B
$149.93
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
Needle Holder #20E Needle Holder #20E
3.7 out of 5 Customer Rating
Needle Holder #20E
$16.09
Metering Needle Assembly: 21VG Metering Needle Assembly: 21VG
3.9 out of 5 Customer Rating
Metering Needle Assembly: 21VG
$16.99
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