O.S. Engines

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

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721-744 of 1,755 Results

Piston: FS-120

$51.47

Piston Ring: FS155A-P

$38.03

Rocker Cover,, Black: FSa-72II

$7.65 ~~Price reduced from $25.51 to~~

Clearance Sale! ⓘ

Thermo Insulator: GF30

$7.46

Valve Collet: FS-91 Surpass

$10.86

Main Shaft: 3815-1000

$8.99

Air Funnel #60RA: FS81 Alpha

$5.74 ~~Price reduced from $19.14 to~~

Clearance Sale! ⓘ

Exhaust Header Assembly: 56 FS

$13.78

Carburetor Rotor: #40D

$11.80

Carburetor Rotor: 91SZ-H Hyper

$11.99 ~~Price reduced from $39.99 to~~

Clearance Sale! ⓘ

Rear Adapter: 18CV-RX

$17.08

Cylinder and Piston Assembly: O.S. Speed B2104

$193.70

Cylinder & Piston Assembly: O.S. Speed R2104

$72.91 ~~Price reduced from $243.06 to~~

Clearance Sale! ⓘ

O.S. Cylinder and Piston Assy Speed B2103 Type S

$193.68

Universal Nipple: #21, T1202 Speed

$11.95

Head Gasket: B2101 Speed

$12.04

Screw Set (8): 18TZ-TX

$9.85

Slide Valve 12F3: T1201 Speed

$11.71 ~~Price reduced from $39.05 to~~

Clearance Sale! ⓘ

Outer Head: O.S. Speed B2104

$103.41

Carburetor 12F3: T1201 Speed

$135.65

O.S. Carburetor Complete 22E(B)GT w o Reducer

$205.96

Crankshaft Ball Bearing, Rear: Speed 21 V-Spec

$119.78

T-1060 Silencer Clamp

$11.47

Carburetor Body: 21J3

$87.19