This is the Hobbywing Xtreme Brushless Motor ESC Combo 17.5T Combo XS5A.

The combo has the following advantages:
a) Factory pre-installed supercharged STOCK competition firmware, the Boost Timing and Turbo Timing functions take advantage of the full potential of a STOCK motor.
b) Smaller than the traditional XERUN-120A-SD and XERUN-60A-SD ESC, easier for installation.
c) Lighter than the traditional XERUN-120A-SD and XERUN-60A-SD ESC, decreases the weight of the whole vehicle.

The combo includes the following items:
a) XTREME STOCK brushless ESC: 1pcs
b)  17.5T sensored brushless motor : 1pcs
c) Advanced professional LCD program box : 1pcs


1   ESC Specification

1.1 Output: Continuous current 60A, burst current 380A.
1.2 Input: 4-9 cells NiMH/NiCd or 2-3 cells LiPo.   Note1
1.3 BEC Output: 6V@3A linear mode built-in BEC.
1.4 Resistance: 0.0006 Ohm.
1.5 Motor Supported: Sensored brushless / Sensorless Brushless.
1.6 Suitable Brushless Motor:  
      With 2 cells Lipo or 4-6 cells NiMH, 1/10 on-road: >=8.5T, 1/10 off-road:  >=11.5T
      With 3 cells Lipo or 7-9 cells NiMH, 1/10 on-road: >=13.5T, 1/10 off-road:  >=17.5T    
1.7 Suitable Car:  
      1/10, 1/12 on-road or off-road cars / trucks for competition race.
      1/10, 1/8 rock crawler.
1.8 Size: 33mm(L) * 28mm(W) * 31mm(H) (Cooling fan height included)
1.9 Weight: 46g (Neither power wires nor cooling fan weight is included)

Note1:
The cooling fan gets its power supply from built-in BEC.


2   ESC Features

2.1 Smart and small with metal shell.
2.2 Drives sensored and sensorless brushless motors.
2.3 Factory pre-installed supercharged STOCK competition firmware with Boost Timing and Turbo Timing function.
2.4 Firmware updatable, and zero timing firmware is optional to be compliant with ROAR SPORTMAN rules.
2.5 Compatible with all firmware of XERUN-120A-SD ESC and XERUN-60A-SD ESC.
2.6 User programmable. Plenty of programmable items make the ESC suitable for each racing.
2.7 Easily programmed with the “SET” button on the ESC, and also compatible with the Digital LED Program Card and the Advanced Professional LCD Program Box.
2.8 Multiple protection features: Low voltage cut-off protection / Over-heat protection / Throttle signal loss protection / Motor blocked protection.
2.9 Splash proof and dust proof.

Although the picture shows an 8.5T Motor, this combo includes a 17.5T Motor.