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
  • (1201)
  • (199)
  • (158)
  • (27)
  • (19)
  • (1)
  • (31)
  • (3)
  • (129)
  • (40)
  • (15)
  • (2)
  • (1)
  • (1)
  • (27)
  • (19)
  • (3)
  • (1)
  • (3)
  • (2)
  • (1)
97-120 of 1,605 Results
Rocker Arm Shaft: Sirius 7 Rocker Arm Shaft: Sirius 7
3.3 out of 5 Customer Rating
Rocker Arm Shaft: Sirius 7
$9.44
Cap Screw 5x15mm (10): GT55 Cap Screw 5x15mm (10): GT55
4.7 out of 5 Customer Rating
Cap Screw 5x15mm (10): GT55
$13.78
Bearing L-1050ZZ Bearing L-1050ZZ
3.3 out of 5 Customer Rating
Bearing L-1050ZZ
$17.99
Main Shaft: 3805-1200 Main Shaft: 3805-1200
3.9 out of 5 Customer Rating
Main Shaft: 3805-1200
$8.99
Gasket Passage: WLA-2, GT55 Gasket Passage: WLA-2, GT55
5 out of 5 Customer Rating
Gasket Passage: WLA-2, GT55
$11.99
Cylinder Brass Head Gasket: 75AX Cylinder Brass Head Gasket: 75AX
5 out of 5 Customer Rating
Cylinder Brass Head Gasket: 75AX
$6.49
Silencer Assembly F-5040: FS110A Silencer Assembly F-5040: FS110A
3.6 out of 5 Customer Rating
Silencer Assembly F-5040: FS110A
$57.86
Tappet Screw: F40-300 Tappet Screw: F40-300
4.6 out of 5 Customer Rating
Tappet Screw: F40-300
$9.99
O-Ring 10.5mm: GT55 O-Ring 10.5mm: GT55
5 out of 5 Customer Rating
O-Ring 10.5mm: GT55
$6.49
Piston Pin: 160FX Piston Pin: 160FX
5 out of 5 Customer Rating
Piston Pin: 160FX
$19.14
Crankshaft: 91HZ-R Speed 3D 3C Crankshaft: 91HZ-R Speed 3D 3C
4.7 out of 5 Customer Rating
Crankshaft: 91HZ-R Speed 3D 3C
$102.54
Slide Valve 22C(B): Speed B2102 Slide Valve 22C(B): Speed B2102
4.7 out of 5 Customer Rating
Slide Valve 22C(B): Speed B2102
$10.08 Price reduced from $33.61 to
Clearance Sale! ⓘ
Cover Plate: 21VG-P Cover Plate: 21VG-P
3.7 out of 5 Customer Rating
Cover Plate: 21VG-P
$13.78
Ball WLA-2: GT55 Ball WLA-2: GT55
5 out of 5 Customer Rating
Ball WLA-2: GT55
$6.99
Bearing R-1240ZZ Bearing R-1240ZZ
4.8 out of 5 Customer Rating
Bearing R-1240ZZ
$16.99
Carburetor Rotor: 40L-R, 55HZ-R Carburetor Rotor: 40L-R, 55HZ-R
4.8 out of 5 Customer Rating
Carburetor Rotor: 40L-R, 55HZ-R
$39.91
Plug Cable: Sirius 7 Plug Cable: Sirius 7
3.1 out of 5 Customer Rating
Plug Cable: Sirius 7
$10.94
Crankshaft: 120AX Crankshaft: 120AX
4.1 out of 5 Customer Rating
Crankshaft: 120AX
$80.37
Carburetor Reed Valve Gasket: GT33 Carburetor Reed Valve Gasket: GT33
4.1 out of 5 Customer Rating
Carburetor Reed Valve Gasket: GT33
$3.28 Price reduced from $10.94 to
Clearance Sale! ⓘ
Crankcase: Sirius 7 Crankcase: Sirius 7
5 out of 5 Customer Rating
Crankcase: Sirius 7
$432.78
Back Plate Gasket O-Ring: FL70 Back Plate Gasket O-Ring: FL70
3.3 out of 5 Customer Rating
Back Plate Gasket O-Ring: FL70
$6.49
Rocker Cover: Sirius 7 Rocker Cover: Sirius 7
4.7 out of 5 Customer Rating
Rocker Cover: Sirius 7
$14.77
Carburetor Rotor: 61ER Carburetor Rotor: 61ER
4.1 out of 5 Customer Rating
Carburetor Rotor: 61ER
$13.79 Price reduced from $45.99 to
Clearance Sale! ⓘ
Inner Head: O.S. Speed R2104 Inner Head: O.S. Speed R2104
5 out of 5 Customer Rating
Inner Head: O.S. Speed R2104
$76.71
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