• Beefy 15T spline vs 25T
  • Best IMAC servo to 42%
  • Best standard for X-MAXX
  • Best 3D servo to 42%
  • Best standard robotics servo
  • Best for heavy hydros
  • Nothing better for 1/8th bashing
  • Best made for 1/10 crawling
  • Not recommended for BEC use
Price: $189.99
    TRAXXAS electrical kit:

    X-MAXX mechanical kit:

    Update price
    Item #: DS1155BLHV
    Availability: In stock
    Usually ships In the same business day

    This is the ProModeler DS1155BLHV servo. Just as we have 3 series I servos (DS505/630/930), this is one of 3 series II servos (DS635/845/1155). The principal differences are series II servos have significantly larger gear than series I, which is largely why they cost more (that and more pricey motors result in faster servos). However, despite the immensely larger gear sets, we're not saying unbreakable (because we're not stupid), but basically twice as large means waaaay more beef and more beef is mo 'betta. More ultimate strength, more service life, just more of everything!

    Anyway, the servo itself is of a size and shape similar to other standard-size servos. It features conventional beam mounts, and is designed to be installed with vibration isolating rubber mounts. Another difference is the 8mm nominal diameter 15T output is massive in comparison to a conventional 6mm 25T spline. It's common with our midi and mega-size servos. Heads up if you've never dealt with such a massive spline. We have horns to mate to it, as do others. This is the spline typically found on 1/5 servos, like our midi and mega servos series.

    Bottom line? The DS1155BLHV is our most capable standard size servo. Just select the appropriate servo arm from amongst the ones in this link and f you need something you don't see, then let us know because we machine and broach these ourselves, then if we anticipate sufficient demand we'll be open to making something custom.

    So what do you get? An all-alloy case, all-steel gear train, brushless motor, dual bearings, plus bronze-reinforced hardpoints. We like to say . . . Better parts. Better servos. The formula is simple. to which we'll add, if you know of a better servo, buy it because this is the best we can do. What's more, it meets three MIL-STDS . . . so basically, standard size servos just don't get any better.

    Basic specifications

    • 1155oz-in of torque
    • 0.10sec/60°

    There's nothing else as strong and fast the DS1155 (not at any price). How's it match up to a well-regarded competitor like the Savox SB2290SG Monster? Theirs goes about 700oz-in and 0.13sec/60° . . . not as strong or fast. Be more fair to compare that one to our DS845BLHV or maybe DS635BLHV.

    And with regard to how the build qualities compare? They say a picture is worth a 1000 words, so take a look and you decide . . .



    The DS1155 bearing on the left as compared to those in Savox SB-2290SG is 25% larger, rated ABEC-9, and shielded. Theirs? Sorry, they don't say.


    With regard to mounting the 2290SG within an X-MAXX, for theirs you'll have no choice but resort to the plastic Traxxas #7749 adapter while for the DS1155BLHV? We offer you an optional CNC-machined aircraft aluminum mechanical kit as a better solution.


    Part of what makes the ProModeler DS1155BLHV better than competitors is that unlike hobby-grade servos, it's built to meet military standards (and subjected to these tests).

    MIL-STD-810G-Part 16

    • Shock - Test Method 516.6
    • Vibration - Test Method 514.6
    • Rain - Test Method 514.5

    ProModeler servos are expressly designed to survive the abuse of the real world outside of modeling  . . . and it's another ownership consideration.


    Last thing is this, if you're wanting this for a rig instead of an airplane, heads up, servos like these won't run on the typical BECs they give away for free on some import ESC. Kindly trust we know more about powering servos than someone named rocknutz on a Facebook group and forum, please.

    Anyway, while packs aren't really our line of business, we offer several dedicated 2S packs ranging from 850-6000mAh plus an excellent standalone BEC. This is so you can run your servo and be happy. Just refer to the first pull-down menu above. Oh, so you don't want to do this? OK, but please don't say we didn't warn you, eh?


    So where's the magic in this servo? it's in the design of the gear train that allows us to stuff much larger gears into a standard size footprint . . . and it's patent pending!

    The obvious comparison is the popular on Amazon, Savox SB-2290SG, which outputs a shade under 700oz-in, transits at 0.135sec/60° and goes for $140. While ours is $50 more expensive, it's also 40% more powerful and 20% faster, which seems fair. But ours is built like a brick shit house and cheapest is never the best, right? So let's eyeball what's hidden from view when decide if value is what actually makes ProModeler worth more.