O.S. Engines

O.S. Engines Category Image
Quality and performance has made O.S. the standard in RC engines for over 80 years.
Filter
Filter
Clear Filters
  • (1237)
  • (270)
  • (236)
  • (37)
  • (27)
  • (31)
  • (4)
  • (140)
  • (49)
  • (15)
  • (2)
  • (1)
  • (40)
  • (27)
  • (7)
  • (1)
  • (3)
  • (2)
  • (1)
217-240 of 1,808 Results
Crankcase: 25FX Crankcase: 25FX
5 out of 5 Customer Rating
Crankcase: 25FX
$44.10
Carburetor Rotor: 61H, GT15 Carburetor Rotor: 61H, GT15
4.1 out of 5 Customer Rating
Carburetor Rotor: 61H, GT15
$26.24
Muffler Assembly F-5050: FS-95V Muffler Assembly F-5050: FS-95V
4.4 out of 5 Customer Rating
Muffler Assembly F-5050: FS-95V
$63.04
Carburetor Reducer 7.0MM AL2, Blue Carburetor Reducer 7.0MM AL2, Blue
5 out of 5 Customer Rating
Carburetor Reducer 7.0MM AL2, Blue
$20.05
Velocity Stack: GF40 Velocity Stack: GF40
5 out of 5 Customer Rating
Velocity Stack: GF40
$25.44
Cover Plate: GT55 Cover Plate: GT55
5 out of 5 Customer Rating
Cover Plate: GT55
$41.99
Carburetor Reducer AL2 5.5mm, Red: Speed T1202 Carburetor Reducer AL2 5.5mm, Red: Speed T1202
5 out of 5 Customer Rating
Carburetor Reducer AL2 5.5mm, Red: Speed T1202
$21.10
Inner Head: T1204 with O-Ring Inner Head: T1204 with O-Ring
4.9 out of 5 Customer Rating
Inner Head: T1204 with O-Ring
$39.26
Cylinder Head Gasket: 25AX Cylinder Head Gasket: 25AX
5 out of 5 Customer Rating
Cylinder Head Gasket: 25AX
$6.49
Cover Plate: R21 Cover Plate: R21
4 out of 5 Customer Rating
Cover Plate: R21
$22.04
Speed Hex Wrench Ball Driver 2.0mm Speed Hex Wrench Ball Driver 2.0mm
3.3 out of 5 Customer Rating
Speed Hex Wrench Ball Driver 2.0mm
$36.84
101/102 Elements (6) 101/102 Elements (6)
4.1 out of 5 Customer Rating
101/102 Elements (6)
$13.83
Cylinder Liner: 70SZ-H Cylinder Liner: 70SZ-H
4 out of 5 Customer Rating
Cylinder Liner: 70SZ-H
$99.65
Spinner Nut: 60-91 Spinner Nut: 60-91
5 out of 5 Customer Rating
Spinner Nut: 60-91
$15.78
Cylinder Liner: 56 FS Cylinder Liner: 56 FS
3.6 out of 5 Customer Rating
Cylinder Liner: 56 FS
$30.10
Crankcase: 120AX Crankcase: 120AX
5 out of 5 Customer Rating
Crankcase: 120AX
$135.55
Fuel Nipple: #20A, B Fuel Nipple: #20A, B
3.1 out of 5 Customer Rating
Fuel Nipple: #20A, B
$10.86
Camshaft: FS72 Alpha Camshaft: FS72 Alpha
4.2 out of 5 Customer Rating
Camshaft: FS72 Alpha
$54.63
Master Connecting Rod Assembly: Sirius 7 Master Connecting Rod Assembly: Sirius 7
4.1 out of 5 Customer Rating
Master Connecting Rod Assembly: Sirius 7
$87.29
Cylinder Liner: 61SX WX Cylinder Liner: 61SX WX
4.5 out of 5 Customer Rating
Cylinder Liner: 61SX WX
$80.99
Connecting Rod: 200 Surpass Connecting Rod: 200 Surpass
5 out of 5 Customer Rating
Connecting Rod: 200 Surpass
$48.51
Cover Plate: 46AXII Cover Plate: 46AXII
5 out of 5 Customer Rating
Cover Plate: 46AXII
$11.80
Plug Cable: Sirius 7 Plug Cable: Sirius 7
3.1 out of 5 Customer Rating
Plug Cable: Sirius 7
$10.94
Slide Valve #21JS Slide Valve #21JS
3.9 out of 5 Customer Rating
Slide Valve #21JS
$32.56
Clear All

HORIZON HOBBY, WHERE RC MEMORIES LIVE.

Who We Are.

At Horizon Hobby, our personal goal is to inspire dreams and build memories. We take pride in providing the best hobby store experience for our customers, whether that’s online, at RC events, or in the RC community with RC cars, RC planes, RC boats, and so much more.

Our Values.

Our purpose is simple: deliver WOW moments. By pursuing the best experience through our portfolio of RC cars, helicopters, airplanes, boats, and more, we bring the RC community together in every city, town, and country. We are radio control innovators and Driven is our middle name.

Our Promise.

Our promise to our customers is creating one-of-a-kind experiences that keeps you coming back for more. We are more than an online hobby store. Our RC cars and trucks, RC airplanes and helicopters, and other radio control products are with you at home, on the go, and with your friends. We bring the fun.

Our policies are top notch:
Same Day Shipping
Free Shipping Over $99
Expert Product Support
Easy Returns
Sign up for Horizon Hobby Text Alerts!

Never miss out - text HOBBY to 44721Learn More

Shop
Support
Company Info
Legal
Copyright © Horizon Hobby, LLC