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)
1,441-1,464 of 1,605 Results
Carburetor Body: 21M Carburetor Body: 21M
4.8 out of 5 Customer Rating
Carburetor Body: 21M
$26.16 Price reduced from $87.21 to
Clearance Sale! ⓘ
Cover Plate: 105HZ Cover Plate: 105HZ
4.2 out of 5 Customer Rating
Cover Plate: 105HZ
$22.30
Cover Plate: 21XZ-B Ver2 Cover Plate: 21XZ-B Ver2
5 out of 5 Customer Rating
Cover Plate: 21XZ-B Ver2
$6.61 Price reduced from $22.04 to
Clearance Sale! ⓘ
Outer Head: 12XZ Speed Spec 3 Outer Head: 12XZ Speed Spec 3
5 out of 5 Customer Rating
Outer Head: 12XZ Speed Spec 3
$92.99
Crankcase: O.S. Speed B2104 Crankcase: O.S. Speed B2104
4.2 out of 5 Customer Rating
Crankcase: O.S. Speed B2104
$176.99
O.S. Carburetor 12F5(B) Speed: T1203 O.S. Carburetor 12F5(B) Speed: T1203
4.2 out of 5 Customer Rating
O.S. Carburetor 12F5(B) Speed: T1203
$125.13
Carburetor 21J3-B: Speed B21 Adam Drake Carburetor 21J3-B: Speed B21 Adam Drake
4 out of 5 Customer Rating
Carburetor 21J3-B: Speed B21 Adam Drake
$162.92
P5 Turbo Glow Very Hot Plug Off-Road P5 Turbo Glow Very Hot Plug Off-Road
3.4 out of 5 Customer Rating
P5 Turbo Glow Very Hot Plug Off-Road
$18.99
Heat Sink Head: 50SX-H Heat Sink Head: 50SX-H
5 out of 5 Customer Rating
Heat Sink Head: 50SX-H
$50.76
Cover Plate: 50SX-H Cover Plate: 50SX-H
4.2 out of 5 Customer Rating
Cover Plate: 50SX-H
$11.80
O.S. Thermo Insulator 21J3 O.S. Thermo Insulator 21J3
3.4 out of 5 Customer Rating
O.S. Thermo Insulator 21J3
$14.99
Needle 21M: 21XZ-R Needle 21M: 21XZ-R
5 out of 5 Customer Rating
Needle 21M: 21XZ-R
$13.78
Metering Needle Assembly Speed 12TZ Metering Needle Assembly Speed 12TZ
5 out of 5 Customer Rating
Metering Needle Assembly Speed 12TZ
$5.74 Price reduced from $19.14 to
Clearance Sale! ⓘ
Piston Pin: 18CV-R Piston Pin: 18CV-R
4.4 out of 5 Customer Rating
Piston Pin: 18CV-R
$4.22 Price reduced from $14.07 to
Clearance Sale! ⓘ
Carburetor Complete 21M4(B) W/O Reducer Carburetor Complete 21M4(B) W/O Reducer
4.8 out of 5 Customer Rating
Carburetor Complete 21M4(B) W/O Reducer
$176.99
Needle 3 (21M) Needle 3 (21M)
4 out of 5 Customer Rating
Needle 3 (21M)
$15.99
Inner Head: O.S. MAX-B21 Inner Head: O.S. MAX-B21
5 out of 5 Customer Rating
Inner Head: O.S. MAX-B21
$28.99
MAX-B21 Car Engine Combo Set MAX-B21 Car Engine Combo Set
4.2 out of 5 Customer Rating
MAX-B21 Car Engine Combo Set
$499.99
MAX-B21 Car Engine MAX-B21 Car Engine
3.1 out of 5 Customer Rating
MAX-B21 Car Engine
$349.99
Carburetor Complete 22E W/O Reducer: O.S. MAX-B21 Carburetor Complete 22E W/O Reducer: O.S. MAX-B21
5 out of 5 Customer Rating
Carburetor Complete 22E W/O Reducer: O.S. MAX-B21
$149.99
O.S. Speed R2105 Engine O.S. Speed R2105 Engine
4.5 out of 5 Customer Rating
O.S. Speed R2105 Engine
$815.99
CARBURETOR COMPLETE 22E2(B) W/O REDUCER CARBURETOR COMPLETE 22E2(B) W/O REDUCER
4.8 out of 5 Customer Rating
CARBURETOR COMPLETE 22E2(B) W/O REDUCER
$137.99
Cylinder Liner 91HZ-R Speed 3C Cylinder Liner 91HZ-R Speed 3C
4.7 out of 5 Customer Rating
Cylinder Liner 91HZ-R Speed 3C
$105.99
O.S. SPEED R2106 O.S. SPEED R2106
5 out of 5 Customer Rating
O.S. SPEED R2106
$804.99
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