O.S. Engines

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

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Screw Set (8): 15CV-A

$9.44

Carburetor 21M2-B: Speed R2101

$152.36

Carburetor Body: #21C

$79.99

Crankshaft: 12XZ Speed Spec II

$35.99 ~~Price reduced from $119.97 to~~

Clearance Sale! ⓘ

Cylinder/Piston/Rod: B2101 Speed

$242.95

Inner Head: 21XZ-R Speed

$57.96

Carburetor Reducer 8mm, Red: Speed 21 V-Spec

$21.10

RP8 Turbo Glow Plug, On-Road, Cold

$15.99

TR02 Tuned Silencer EFRA2165

$184.82

Rear Bearing: 12TR

$61.99

Crankshaft: 21XZ-R

$144.99

Cylinder & Piston Assembly: 21TM

$122.17

Inner Head: 12XZ Speed Spec 3

$9.59 ~~Price reduced from $31.99 to~~

Clearance Sale! ⓘ

Exhaust Gasket: 21RZ

$13.78

Head Gasket: 30VG

$7.46

Mixture Control Valve #10A

$13.67

O.S. Metering Needle Assembly 22D Speed B2103

$19.14

Metering Needle Assembly 22C(B): Speed B2102

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

Clearance Sale! ⓘ

Carburetor #21L: 25AX

$97.81

Carburetor 80T: Sirius 7

$125.08

Heat Sink Head: 75AX

$48.51

E4050 In-Cowl Muffler: 65AX

$67.33

Carburetor Body: 37SZ-H

$40.12

Crankcase: GF30

$162.95