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)
865-888 of 1,605 Results
Cylinder Head: FT-160 Cylinder Head: FT-160
4.5 out of 5 Customer Rating
Cylinder Head: FT-160
$87.19
Cylinder Head: FF-320 Cylinder Head: FF-320
5 out of 5 Customer Rating
Cylinder Head: FF-320
$76.85
Cylinder Head & Valve: FT-300 Cylinder Head & Valve: FT-300
4.5 out of 5 Customer Rating
Cylinder Head & Valve: FT-300
$190.99
Cylinder Liner: 95AX Cylinder Liner: 95AX
4.1 out of 5 Customer Rating
Cylinder Liner: 95AX
$88.92
Cylinder Liner: FS-62V Cylinder Liner: FS-62V
5 out of 5 Customer Rating
Cylinder Liner: FS-62V
$35.47
Bubbleless Clunk Bubbleless Clunk
3.3 out of 5 Customer Rating
Bubbleless Clunk
$21.04
Carburetor Gasket: 200 Surpass Carburetor Gasket: 200 Surpass
4.1 out of 5 Customer Rating
Carburetor Gasket: 200 Surpass
$7.46
Gear Holder Screw: 30 Wankel Rotary Gear Holder Screw: 30 Wankel Rotary
4.7 out of 5 Customer Rating
Gear Holder Screw: 30 Wankel Rotary
$8.43
Intake Manifold Set: Sirius 7 Intake Manifold Set: Sirius 7
3.9 out of 5 Customer Rating
Intake Manifold Set: Sirius 7
$8.84 Price reduced from $29.48 to
Clearance Sale! ⓘ
Needle Holder #7H #7M #7L Needle Holder #7H #7M #7L
4.1 out of 5 Customer Rating
Needle Holder #7H #7M #7L
$11.80
Piston Pin Retainer: 81VR-M Piston Pin Retainer: 81VR-M
3.9 out of 5 Customer Rating
Piston Pin Retainer: 81VR-M
$6.49
O-Ring PRC: 120Surpass O-Ring PRC: 120Surpass
4.7 out of 5 Customer Rating
O-Ring PRC: 120Surpass
$6.49
Piston Pin Retainer: GT33 Piston Pin Retainer: GT33
5 out of 5 Customer Rating
Piston Pin Retainer: GT33
$7.46
Piston Pin: 32SX-H Piston Pin: 32SX-H
3.9 out of 5 Customer Rating
Piston Pin: 32SX-H
$11.91
Piston: GT22 Piston: GT22
4.1 out of 5 Customer Rating
Piston: GT22
$63.22
Pushrods: 56FS-a Pushrods: 56FS-a
3.7 out of 5 Customer Rating
Pushrods: 56FS-a
$2.80 Price reduced from $9.49 to
Clearance Sale! ⓘ
Screw Set (12): 108FSR Screw Set (12): 108FSR
4.3 out of 5 Customer Rating
Screw Set (12): 108FSR
$17.16
Thrust Washer Rear 30Wankel Thrust Washer Rear 30Wankel
5 out of 5 Customer Rating
Thrust Washer Rear 30Wankel
$6.49
Valve Spring Retainer: 90-300 Valve Spring Retainer: 90-300
5 out of 5 Customer Rating
Valve Spring Retainer: 90-300
$6.49
Valve Spring Exhaust: FS-120 Surpass Valve Spring Exhaust: FS-120 Surpass
5 out of 5 Customer Rating
Valve Spring Exhaust: FS-120 Surpass
$6.49
Woodruff Key: 108-300 Woodruff Key: 108-300
5 out of 5 Customer Rating
Woodruff Key: 108-300
$2.55 Price reduced from $8.49 to
Clearance Sale! ⓘ
Motor Mount: OMA-38 Series Motor Mount: OMA-38 Series
4.1 out of 5 Customer Rating
Motor Mount: OMA-38 Series
$15.99
Crankcase: 55AX Crankcase: 55AX
3.3 out of 5 Customer Rating
Crankcase: 55AX
$67.24
Crankcase: 56 FS Crankcase: 56 FS
3.3 out of 5 Customer Rating
Crankcase: 56 FS
$57.96
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