Parts/Radio & control/Servos/Futaba S-U300 Digital Universal Standard Servo
Futaba S-U300 Digital Universal Standard Servo
Futaba

Futaba S-U300 Digital Universal Standard Servo

Part # FUT01102320-15.0(3)
Where to buy
$14.99
AMain Hobbies
Seen Oct 12, 2026
$14.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

The Futaba S-U300 Digital Standard Universal Servo is S.Bus2 capable, universal standard plastic gear servo. Package includes servo and accessory pack.

Specifications:
  • Speed:
    • @4.8V: 0.23 sec/60°
    • @6.0V: 0.19 sec/60°
  • Torque:
    • @4.8V: 44.4 oz/in 
    • @6.0V: 56.9 oz/in 
  • Size: 40x20x36.1mm (1.6 in x 0.8 in x 1.4 in)
  • Weight: 1.26oz
  • Gears: Plastic 
  • Spline: 6mm/25T 
  • Motor: 3Pole Cored 
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews5.0 · 3 reviews

David A. Hourston ThilletVerified owneron Futaba S-U300 Digital Universal Standard Servo

Great servo for its price. Fairly precise, true digital and cheap! Working great in my Nuova Faor SF501 nitro bike!!

1 found this helpful
Ken TaylorVerified owneron Futaba S-U300 Digital Universal Standard Servo

If you liked your 3004’s, you’ll like these. They’re bushings, but if you have some old 3004’s kicking around you can put the 3004 top plate on the U-300 and you have a new modern “ball bearing” U-300. A-Main was good on shipping and is great on support. Thanks A-Main.

andrew pVerified owneron Futaba S-U300 Digital Universal Standard Servo

Great basic servo. Gets the job done for low dollars.

What reviewers say

Three verified owners rated the Futaba S-U300 digital universal standard servo 5/5. Reviewers describe it as a low-cost, true digital servo that performs well as a basic unit, with one owner reporting good results in a nitro bike. One reviewer notes the servo uses bushings rather than ball bearings, and that the top plate from older 3004 servos can be swapped on to give a ball-bearing style setup. One reviewer also praised the seller's shipping and support. No criticisms were raised, though the sample is small.

  • + Low price
  • + True digital servo
  • + Precise positioning
  • + Good as a basic servo
  • − Uses bushings rather than ball bearings
Summary generated from the reviews above.

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