X6 HBL599 Brushless Titanium Gear High Torque Digital Servo (High Voltage) by MKS

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The MKS X6 HBL599 Brushless Titanium Gear High Torque Digital Servo is perfect for 1/10 to 1/5 scale applications that require stump pulling torque, low power consumption and high speed, combined with the flexibility of high voltage circuitry in a standard size package.


  • Ideal for 1/10 monster truck, 1/8 truck and buggy and 1/5 scale applications
  • Ultra torque, incredible efficiency, and low power consumption
  • Smoother, faster, more efficient for top level performance
  • Chrome-Titanium gears for precision and durability
  • .11 / 416.62 oz-in @6.0V and .08 / 583.27 oz-in @ 8.2V!
  • Standard dimensions make it perfect for vehicles that can benefit from a high quality servo
  • CNC Machined aluminum case for exceptional cooling
  • HD 4096 Resolution
  • 0.0008ms Dead Band
  • Superior Holding Torque
  • Japanese Brushless Motor


  • Torque:
    • @6.0V: 416.62 oz-in (30 kg-cm)
    • @7.4V: 527.72 (38 kg-cm)
    • @8.2V: 583.27 (42 kg-cm)
  • Speed:
    • @6.0V: 0.11 s
    • @7.4V: 0.09 s
    • @8.2V: 0.08 s
  • Weight: 73.12 g
  • Dimension: 40x20x38.5mm  
  • Working Voltage: 3.5 ~ 8.4 V (2S LiPo unregulated)
  • Working frequency: 1520μs / 333Hz
  • Dead Band: 0.0008 ms (Default)
  • Bearing: 2BB
  • Motor: Japan High Quality Brushless Motor
  • Gear: Chrome-Titanium alloy gear

This product was added to our catalog on August 5, 2015.

Ken Bianucci
Verified Owner
Friday, Oct 2 2015 (about a year ago)
MKS X6 HBL599 Brushless Titanium Gear High Torque Digital Servo (High Voltage)
An early review with only a handful of battery packs through my new 1/8th scale buggy, an EB48.3

Due to running on a high bite indoor clay track, I wanted a servo that was both responsive and with good torque output. I settled on this MKS HBL599 as the stats looked good but was a bit worried as I had no experience with MKS as a brand before. The build and machine work just on the case is impressive, not cheap pot-metal cases here with machined holes and calling it a CNC part, this is a machined case with serious cooling fins. Running it off a Tekin RX8 GenII at 7 volts this thing is an absolute beast and centers perfectly with out constantly wander and searching for center, best digital brushless servo I have owned yet, others being Futaba, Airtronics and Savox. Not had my buggy in any major crashes so no major reports on durability yet but the servos is the best built one I have seen under $200.00, bar none.

The spline count for this is the same as Savox and Futaba, 25T.)
R. K.
Verified Owner
Tuesday, Jan 3 2017 (2 weeks ago)
MKS X6 HBL599 Brushless Titanium Gear High Torque Digital Servo (High Voltage)
I drive rc cars (1/8 scale truggy) since 2 years and fly since 7 years rc helis (3D). I have very good experience with MKS servos: I own 6 x HBL575 as swash servos (= 2 helis, 700 class) and they never led me down. Very durable (quite a few crashes) and very precise centering. Now I use the HBL599 in my Tekno EB48.3 - what should I write: just perfect. Brutal strong, very fast, precise centering, great quality. I'm sure they will last as long as one would expect it at this price tag. Compared to my buddies KO Propo RSx2 (Power H.C.) in the same rig the MKS HBL599 is faster and stronger on paper. But both of us do not notice any difference an the track (both of us use a Sanwa MT4s TX, both BECs on 7.4V).)
Verified Owner
Saturday, Oct 24 2015 (about a year ago)
MKS X6 HBL599 Brushless Titanium Gear High Torque Digital Servo (High Voltage)
Mks is new to me thought i would try it in my 410.3/eb48.3sl absolutly love it! Ive had alot of other servos hitec protek ko propo this thing is a step above zero play witch makes my teknos steering super tite super smooth nice looking high quality beastly torque good speed. Havnt had long cant speak for durability but dont think i will have any problems.)