O.S. Engines

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

Filter

1585-1605 of 1605 Results

Page Size

Sorting

Out of Stock

Gasket Set: FS-91-P

$10.94

Out of Stock

Prop Washer 10-12

$1.95$6.49

Clearance Sale!

Out of Stock

M16 In-Cowl Exhaust Header Pipe Side 60D: FS20S

$14.55$48.51

Clearance Sale!

Out of Stock

Cam Cover: FS-62V

$3.57$11.91

Clearance Sale!

Out of Stock

Connecting Rod: GT15HZ

$17.33$57.77

Clearance Sale!

Out of Stock

Outerhead: 21XR-B Version II

$24.09$80.29

Clearance Sale!

Out of Stock

Screw Set (8): 25LA

$8.43

Out of Stock

Crankshaft: GT33

$37.64$125.47

Clearance Sale!

Out of Stock

Rocker Arm Support Assembly FS91-240

$8.87$29.55

Clearance Sale!

Out of Stock

Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition

$33.38$111.25

Clearance Sale!

Out of Stock

Carburetor #21E Slide: 30VG Series

$119.86

Out of Stock

Cylinder Piston Assembly: R21

$39.83$132.77

Clearance Sale!

Out of Stock

Cylinder Rebuild Kit: 21XZ-GT Speed

$66.47$221.55

Clearance Sale!

Out of Stock

Connecting Rod: 21XR-B Version II

$8.87$29.56

Clearance Sale!

Out of Stock

Speed Hex Driver Replacement Tip 2.5

$5.52$18.39

Clearance Sale!

Out of Stock

Cylinder Liner: 140RX

$31.80$106.01

Clearance Sale!

Out of Stock

Air Funnel #60RA: FS81 Alpha

$5.74$19.14

Clearance Sale!

Out of Stock

Crankshaft: R2101 Speed

$59.79$199.31

Clearance Sale!

Out of Stock

Outer Cylinder Head: R2103 Speed

$30.71$102.35

Clearance Sale!

Out of Stock

Crankshaft Ball Bearing, Rear: Speed 21 V-Spec

$35.93$119.78

Clearance Sale!

Out of Stock

Cylinder & Piston: T2101 Speed

$41.44$138.14

Clearance Sale!

O.S. Engines

Filter

Shop

Support

Company Info

Legal

Sign up & save 10% on your next order!*

Sign up for Horizon Hobby Text Alerts!

O.S. Engines

Filter

Discontinued Items

In Stock

Price

Part Type

Accessory Type

Amperage

# of Cylinders

Power Type

Programmable

Tool Type