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
  • (1225)
  • (257)
  • (220)
  • (32)
  • (20)
  • (1)
  • (31)
  • (4)
  • (142)
  • (44)
  • (15)
  • (2)
  • (1)
  • (1)
  • (30)
  • (22)
  • (3)
  • (1)
  • (3)
  • (2)
  • (1)
1,513-1,536 of 1,755 Results
Valve Intake: FS-120 Surpass Valve Intake: FS-120 Surpass
3.9 out of 5 Customer Rating
Valve Intake: FS-120 Surpass
$37.80
Lock Washer 5mm Lock Washer 5mm
5 out of 5 Customer Rating
Lock Washer 5mm
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Motor Mount: OMA-28 Series Motor Mount: OMA-28 Series
3.9 out of 5 Customer Rating
Motor Mount: OMA-28 Series
$8.99
Piston/Sleeve/Rod set: O.S. SPEED R2106 Piston/Sleeve/Rod set: O.S. SPEED R2106
4.5 out of 5 Customer Rating
Piston/Sleeve/Rod set: O.S. SPEED R2106
$279.99
Pump Unit PD-08: FS-200S-P Pump Unit PD-08: FS-200S-P
5 out of 5 Customer Rating
Pump Unit PD-08: FS-200S-P
$87.29
Carburetor Body: #10H Carburetor Body: #10H
4.5 out of 5 Customer Rating
Carburetor Body: #10H
$13.99
Connecting Rod: 21VF/SE Connecting Rod: 21VF/SE
4.1 out of 5 Customer Rating
Connecting Rod: 21VF/SE
$21.10
Crankcase: FS81 Alpha Crankcase: FS81 Alpha
4.1 out of 5 Customer Rating
Crankcase: FS81 Alpha
$87.19
Cylinder Head: FS-95V Cylinder Head: FS-95V
4.5 out of 5 Customer Rating
Cylinder Head: FS-95V
$97.70
Cylinder Head with Valve: FS-91-P Cylinder Head with Valve: FS-91-P
4.5 out of 5 Customer Rating
Cylinder Head with Valve: FS-91-P
$135.63
Insulator, 60K Insulator, 60K
3.7 out of 5 Customer Rating
Insulator, 60K
$19.05
Exhaust Gasket: 55HZ Exhaust Gasket: 55HZ
3.7 out of 5 Customer Rating
Exhaust Gasket: 55HZ
$17.16
Cylinder Head Gasket: 25AX Cylinder Head Gasket: 25AX
5 out of 5 Customer Rating
Cylinder Head Gasket: 25AX
$6.49
Gasket Head: 46AXII Gasket Head: 46AXII
4.1 out of 5 Customer Rating
Gasket Head: 46AXII
$6.49
Intake Manifold: GF30 Intake Manifold: GF30
3.9 out of 5 Customer Rating
Intake Manifold: GF30
$34.86
Muffler Assembly Screw: 65AX Muffler Assembly Screw: 65AX
4.1 out of 5 Customer Rating
Muffler Assembly Screw: 65AX
$8.49
Muffler Assembly Screw F-4050: FS-62V Muffler Assembly Screw F-4050: FS-62V
4.7 out of 5 Customer Rating
Muffler Assembly Screw F-4050: FS-62V
$9.49
Piston Ring: FS72 Alpha Piston Ring: FS72 Alpha
4.1 out of 5 Customer Rating
Piston Ring: FS72 Alpha
$29.49
Cap Screws M3 5x20(10): FL-70 Cap Screws M3 5x20(10): FL-70
3.5 out of 5 Customer Rating
Cap Screws M3 5x20(10): FL-70
$9.85
Shaft Throttle WLA-2: GT55 Shaft Throttle WLA-2: GT55
5 out of 5 Customer Rating
Shaft Throttle WLA-2: GT55
$29.60
Rocker Cover Retaining Screws: FS-200S Rocker Cover Retaining Screws: FS-200S
5 out of 5 Customer Rating
Rocker Cover Retaining Screws: FS-200S
$9.85
Crankshaft: 70SZ-H Crankshaft: 70SZ-H
3.3 out of 5 Customer Rating
Crankshaft: 70SZ-H
$67.99
Crankshaft: GGT10 Crankshaft: GGT10
3.7 out of 5 Customer Rating
Crankshaft: GGT10
$66.13
Cylinder Head: 55AX Cylinder Head: 55AX
3.7 out of 5 Customer Rating
Cylinder Head: 55AX
$34.86
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