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)
505-528 of 1,755 Results
Pushrod: 120-240 Pushrod: 120-240
5 out of 5 Customer Rating
Pushrod: 120-240
$9.44
Spring Metering WLA-2: GT55 Spring Metering WLA-2: GT55
5 out of 5 Customer Rating
Spring Metering WLA-2: GT55
$5.99
Rocker Arm Assembly FS-20 Rocker Arm Assembly FS-20
5 out of 5 Customer Rating
Rocker Arm Assembly FS-20
$22.04
Screw Set 21-32 (10) Screw Set 21-32 (10)
3.6 out of 5 Customer Rating
Screw Set 21-32 (10)
$9.85
Bearing R-1240ZZ Bearing R-1240ZZ
4.8 out of 5 Customer Rating
Bearing R-1240ZZ
$16.99
Prop Shaft Set: OMA-28 Series Prop Shaft Set: OMA-28 Series
3.6 out of 5 Customer Rating
Prop Shaft Set: OMA-28 Series
$6.29 Price reduced from $20.99 to
Clearance Sale! ⓘ
Long Socket Wrench With Plug Grip Long Socket Wrench With Plug Grip
3.8 out of 5 Customer Rating
Long Socket Wrench With Plug Grip
$19.16
Needle Valve Assembly #11H #11HB Needle Valve Assembly #11H #11HB
3.6 out of 5 Customer Rating
Needle Valve Assembly #11H #11HB
$27.29
Slide Valve 12D: 18TM Slide Valve 12D: 18TM
5 out of 5 Customer Rating
Slide Valve 12D: 18TM
$32.56
Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition
4.6 out of 5 Customer Rating
Outer Head: O.S. Speed B21 Pink Rhonda Drake Edition
$111.25
O.S. Carburetor Body 22E (B) Speed B2103 Type R O.S. Carburetor Body 22E (B) Speed B2103 Type R
5 out of 5 Customer Rating
O.S. Carburetor Body 22E (B) Speed B2103 Type R
$87.19
Cylinder Rebuild Kit: R21 Cylinder Rebuild Kit: R21
4.4 out of 5 Customer Rating
Cylinder Rebuild Kit: R21
$188.45
O.S. Outer Head OS Speed R21GT O.S. Outer Head OS Speed R21GT
4.4 out of 5 Customer Rating
O.S. Outer Head OS Speed R21GT
$132.29
Outer Head: 21XZ-R Outer Head: 21XZ-R
4.8 out of 5 Customer Rating
Outer Head: 21XZ-R
$69.99
Outer Head O.S.Speed B21 Adam Drake II Outer Head O.S.Speed B21 Adam Drake II
4.8 out of 5 Customer Rating
Outer Head O.S.Speed B21 Adam Drake II
$107.98
T-2080 C-Ring T-2080 C-Ring
3.6 out of 5 Customer Rating
T-2080 C-Ring
$9.19
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
Pump Fixing Screw Assembly: 91SZ-H Hyper Pump Fixing Screw Assembly: 91SZ-H Hyper
4.2 out of 5 Customer Rating
Pump Fixing Screw Assembly: 91SZ-H Hyper
$5.70
Cam Gear: Sirius 7 Cam Gear: Sirius 7
4 out of 5 Customer Rating
Cam Gear: Sirius 7
$52.66
Connecting Rod: 37SZ-H Connecting Rod: 37SZ-H
3.6 out of 5 Customer Rating
Connecting Rod: 37SZ-H
$22.04
Crankshaft: 55AX Crankshaft: 55AX
4.4 out of 5 Customer Rating
Crankshaft: 55AX
$55.12
Cylinder Liner: 50SX-H Cylinder Liner: 50SX-H
4.8 out of 5 Customer Rating
Cylinder Liner: 50SX-H
$37.47
Mixture Control Screw: #2F and #2FB Mixture Control Screw: #2F and #2FB
5 out of 5 Customer Rating
Mixture Control Screw: #2F and #2FB
$9.44
Manifold Nut M9 Manifold Nut M9
3.6 out of 5 Customer Rating
Manifold Nut M9
$6.49
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