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
  • (1238)
  • (270)
  • (241)
  • (37)
  • (27)
  • (1)
  • (31)
  • (4)
  • (148)
  • (49)
  • (15)
  • (2)
  • (1)
  • (1)
  • (37)
  • (25)
  • (5)
  • (1)
  • (3)
  • (2)
  • (1)
145-168 of 1,814 Results
Piston: FS-95V Piston: FS-95V
5 out of 5 Customer Rating
Piston: FS-95V
$48.43
Rotor Gear Screw: 30Wankel Rotor Gear Screw: 30Wankel
5 out of 5 Customer Rating
Rotor Gear Screw: 30Wankel
$13.83
Screw Set (12): FS-40 Surpass Screw Set (12): FS-40 Surpass
5 out of 5 Customer Rating
Screw Set (12): FS-40 Surpass
$9.44
Carburetor Washe:r #20A, B Carburetor Washe:r #20A, B
4 out of 5 Customer Rating
Carburetor Washe:r #20A, B
$6.49
Cover Plate: GF30 Cover Plate: GF30
3.1 out of 5 Customer Rating
Cover Plate: GF30
$32.56
Crankshaft: GT15HZ Crankshaft: GT15HZ
5 out of 5 Customer Rating
Crankshaft: GT15HZ
$102.35
Crankshaft Spacer: Sirius 7 Crankshaft Spacer: Sirius 7
3.3 out of 5 Customer Rating
Crankshaft Spacer: Sirius 7
$11.75
Cylinder Block: GT60 Cylinder Block: GT60
5 out of 5 Customer Rating
Cylinder Block: GT60
$233.99
Cylinder Head: 91HZ-PS Cylinder Head: 91HZ-PS
3.7 out of 5 Customer Rating
Cylinder Head: 91HZ-PS
$89.99
Drive Hub: 200 Surpass Drive Hub: 200 Surpass
5 out of 5 Customer Rating
Drive Hub: 200 Surpass
$29.60
Gasket Head, 0.1mm: 120AX Special Gasket Head, 0.1mm: 120AX Special
5 out of 5 Customer Rating
Gasket Head, 0.1mm: 120AX Special
$7.46
Gasket Carburetor: 61-108 Gasket Carburetor: 61-108
4.1 out of 5 Customer Rating
Gasket Carburetor: 61-108
$6.49
Head Gasket: GGT10 Head Gasket: GGT10
5 out of 5 Customer Rating
Head Gasket: GGT10
$11.87
Idle Needle: WLA-2 GT55 Idle Needle: WLA-2 GT55
5 out of 5 Customer Rating
Idle Needle: WLA-2 GT55
$15.76
Mixture Control Valve: 200 Surpass Mixture Control Valve: 200 Surpass
3.7 out of 5 Customer Rating
Mixture Control Valve: 200 Surpass
$17.16
Needle A IFNVA Needle A IFNVA
3.1 out of 5 Customer Rating
Needle A IFNVA
$11.80
Cover Assembly Metering WLA-2: GT55 Cover Assembly Metering WLA-2: GT55
4.5 out of 5 Customer Rating
Cover Assembly Metering WLA-2: GT55
$14.99
O-Ring Silencer #E3080: 35AX O-Ring Silencer #E3080: 35AX
4.1 out of 5 Customer Rating
O-Ring Silencer #E3080: 35AX
$10.94
Piston Pin with Pads: FS30S Piston Pin with Pads: FS30S
3.9 out of 5 Customer Rating
Piston Pin with Pads: FS30S
$9.85
Piston Ring: FS155A-P Piston Ring: FS155A-P
5 out of 5 Customer Rating
Piston Ring: FS155A-P
$38.03
Piston Ring: GT60 Piston Ring: GT60
4.7 out of 5 Customer Rating
Piston Ring: GT60
$30.44
Rocker Cover,, Black: FSa-72II Rocker Cover,, Black: FSa-72II
4.1 out of 5 Customer Rating
Rocker Cover,, Black: FSa-72II
$25.51
Cap Screw 4x20mm (10): GT55 Cap Screw 4x20mm (10): GT55
3.9 out of 5 Customer Rating
Cap Screw 4x20mm (10): GT55
$11.80
Thermo Insulator: GF30 Thermo Insulator: GF30
3.5 out of 5 Customer Rating
Thermo Insulator: GF30
$7.46
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 2025 © Horizon Hobby, LLC