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)
409-432 of 1,605 Results
Drive Washer: 21-25 Drive Washer: 21-25
4.7 out of 5 Customer Rating
Drive Washer: 21-25
$11.80
Exhaust Cam: Sirius 7 Exhaust Cam: Sirius 7
3.9 out of 5 Customer Rating
Exhaust Cam: Sirius 7
$21.11 Price reduced from $70.37 to
Clearance Sale! ⓘ
Gasket Carburetor: FS-120 Gasket Carburetor: FS-120
4.5 out of 5 Customer Rating
Gasket Carburetor: FS-120
$6.49
Gasket Carburetor: 40-61, FT-300 Gasket Carburetor: 40-61, FT-300
3.3 out of 5 Customer Rating
Gasket Carburetor: 40-61, FT-300
$6.49
Gasket Carburetor: GF40 Gasket Carburetor: GF40
3.9 out of 5 Customer Rating
Gasket Carburetor: GF40
$11.91
Intake Manifold: FS155A-P Intake Manifold: FS155A-P
5 out of 5 Customer Rating
Intake Manifold: FS155A-P
$38.03
Intake Pipe AS-R: FT-120 160 Intake Pipe AS-R: FT-120 160
4.1 out of 5 Customer Rating
Intake Pipe AS-R: FT-120 160
$22.30
Mixture Control Valve: 61ER Mixture Control Valve: 61ER
5 out of 5 Customer Rating
Mixture Control Valve: 61ER
$8.84 Price reduced from $29.49 to
Clearance Sale! ⓘ
Exhaust Header Pipe Assembly: 200 Surpass Exhaust Header Pipe Assembly: 200 Surpass
5 out of 5 Customer Rating
Exhaust Header Pipe Assembly: 200 Surpass
$22.26
Exhaust Header Pipe Assembly F-4050: FS-62V Exhaust Header Pipe Assembly F-4050: FS-62V
4.3 out of 5 Customer Rating
Exhaust Header Pipe Assembly F-4050: FS-62V
$14.84
Muffler Extension Screws 120AX (2) Muffler Extension Screws 120AX (2)
5 out of 5 Customer Rating
Muffler Extension Screws 120AX (2)
$6.49
O-Ring P3-FKM 61H: GT15 O-Ring P3-FKM 61H: GT15
3.3 out of 5 Customer Rating
O-Ring P3-FKM 61H: GT15
$10.94
Piston: FS155A-P Piston: FS155A-P
4.1 out of 5 Customer Rating
Piston: FS155A-P
$17.39 Price reduced from $57.96 to
Clearance Sale! ⓘ
Rocker Arm: FS95V Rocker Arm: FS95V
3.7 out of 5 Customer Rating
Rocker Arm: FS95V
$28.45
Cap Screw 5x15mm (10): GT55 Cap Screw 5x15mm (10): GT55
4.7 out of 5 Customer Rating
Cap Screw 5x15mm (10): GT55
$13.78
Screw Set: FS-48 Surpass Screw Set: FS-48 Surpass
4.7 out of 5 Customer Rating
Screw Set: FS-48 Surpass
$10.90
Allen Head Screws M3.5x12 (10) Allen Head Screws M3.5x12 (10)
5 out of 5 Customer Rating
Allen Head Screws M3.5x12 (10)
$9.85
Throttle Lever #2CK Throttle Lever #2CK
4.5 out of 5 Customer Rating
Throttle Lever #2CK
$6.49
Intake Valve: 56 FS Intake Valve: 56 FS
3.7 out of 5 Customer Rating
Intake Valve: 56 FS
$5.72 Price reduced from $19.05 to
Clearance Sale! ⓘ
Exhaust Valve Assembly: 200 Surpass Exhaust Valve Assembly: 200 Surpass
5 out of 5 Customer Rating
Exhaust Valve Assembly: 200 Surpass
$44.22
Valve Spring: 20-300 Valve Spring: 20-300
5 out of 5 Customer Rating
Valve Spring: 20-300
$6.49
Prop Shaft: OMA-50 Series Prop Shaft: OMA-50 Series
3.3 out of 5 Customer Rating
Prop Shaft: OMA-50 Series
$10.49 Price reduced from $34.99 to
Clearance Sale! ⓘ
Crankcase: FS155A-P Crankcase: FS155A-P
4.5 out of 5 Customer Rating
Crankcase: FS155A-P
$174.52
Crankshaft: 56 FS Crankshaft: 56 FS
3.3 out of 5 Customer Rating
Crankshaft: 56 FS
$18.20 Price reduced from $60.65 to
Clearance Sale! ⓘ
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