O.S. Engines

Quality and performance has made O.S. the standard in RC engines for over 80 years.

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289-312 of 1,605 Results

Crankshaft: O.S. Speed B2104

$237.99

Connecting Rod: R2102, Speed 21XZ-GT

$52.58

O.S. Cover Plate Speed: T1203

$17.99

O.S. Crankcase Speed: T1203

$79.99

Cylinder Rebuild Kit: 21XR-B

$44.98 ~~Price reduced from $149.93 to~~

Clearance Sale! ⓘ

Cylinder & Piston: 21XZ-GT Speed

$177.63

O.S. Inner Head with O-Ring Speed B2103 Type R & S

$57.75

Needle Holder #20E

$16.09

Metering Needle Assembly: 21VG

$16.99

Valve Spring: FS-26S-C

$6.49

#6 A3 Glow Plug Hot Air

$11.99

Cylinder Head: 91SX-H Complete

$30.00 ~~Price reduced from $99.99 to~~

Clearance Sale! ⓘ

Radial Mount: 72FS-a

$44.34

Carburetor Rotor: #61B, 91HZ

$13.19 ~~Price reduced from $43.99 to~~

Clearance Sale! ⓘ

Carburetor Rotor: 80T Sirius 7

$13.25 ~~Price reduced from $44.18 to~~

Clearance Sale! ⓘ

Connecting Rod: 70SZ-H

$29.49

Cover Plate: FS91-P

$21.10

Crankcase Plug: GT55

$17.16

Crankshaft: 50SX

$47.99

Cylinder Head: 140RX

$71.53

Cylinder Head: GT15HZ

$32.41 ~~Price reduced from $108.03 to~~

Clearance Sale! ⓘ

Cylinder Liner: 50SX-H

$58.90

Cylinder Liner: FT-300

$59.99

Drive Washer: 25LA-S

$6.49