O.S. Engines

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

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Exhaust Header Pipe M1021: 21TM

$48.55

Inner Head: Speed 21XZ-GT

$15.81 ~~Price reduced from $52.69 to~~

Clearance Sale! ⓘ

O.S. Crankcase Speed B2103 Type S & Type R

$147.19

Head Gasket 0.2T: GT22

$7.46

Cam Follower: Sirius 7

$6.33 ~~Price reduced from $21.12 to~~

Clearance Sale! ⓘ

Crankshaft: 91HZ

$91.51

Needle Valve Assembly: #60B

$22.30

Carburetor Body: 22B, 21XR-B

$18.95 ~~Price reduced from $63.18 to~~

Clearance Sale! ⓘ

Valve Spring Retainer: F20-300

$6.49

Main Shaft: OMA-2815-1100

$6.99

Cylinder and Piston Assembly: O.S. Speed B2104

$193.70

Carburetor 22B: 21XR-B

$119.78

Inner Head O.S.Speed B21 Adam Drake II

$57.75

Front Housing: GT60

$87.18

Crankshaft: 21XZ-R

$144.99

Speed Ball Driver Replacement Tip 2.5

$18.53

Rear Cover Plate: GT33

$34.76

Mixture Control Screw: #2F and #2FB

$9.44

Carburetor Retainer: 61RX, SX

$12.99

Heat Sink Head: 18CV-R

$91.50

Crankcase: GT33

$97.81

Piston Ring: GT33

$25.44

Needle Valve Assembly #10J #10M

$26.24

Cylinder Jacket: IL-300 Dia-Star

$162.95