MSRP: $449.99
Available for*: $334.99
*at participating retailers

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1/8 Xcelorin 2100Kv Brushless Combo

Xcelorin 1/8 Brushless Systems are the ROAR Electric 1/8 Champion.

At a Glance

Xcelorin Brushless Systems from Losi represent the latest development in brushless power and performance. The 1/8-scale 2100Kv Xcelorin Sensorless Motor and ESC Combo will convert any 8IGHT-based race or RTR vehicle into an electric vehicle. Enjoy the brute torque and speed achieved through brushless technology with Losi’s 1/8-scale Xcelorin Sensorless Brushless Systems.

1/8 Sensorless Motor - The powerful 670-sized Xcelorin Sensorless brushless motor offers performance-designed features like a sintered neodymium rotor, precision motor ball bearings, and is virtually maintenance-free.

1/8 Sensorless ESC - The feature packed Xcelorin Sensorless Electronic Speed Control features a high-speed cooling fan, pre-wired Losi EC5 power connector, accommodates a 3- to 5-cell LiPo battery pack, forward/brake with reverse or forward/brake settings, two preset drive profiles with unlimited potential with a PC and much more.
The ESC also includes a Quick Programming Card, which allows adjustments to the ESC without the need for a computer, and included three pre-programmed profiles for convenience.


  • Powerful, 670-sized sensorless brushless 4-pole motor
  • No motor maintenance required
  • Precision motor ball bearings for smoother operation
  • Sintered neodymium rotor
  • Longer run times
  • 160A continuous current with 800A peak
  • Prewired Losi EC5 power connector
  • Accommodates a 3- to 5-cell LiPo battery pack
  • High-speed cooling fan for lower running temperatures and protection
  • Optimized for Spektrum or legacy radio systems
  • Internal and programmable BEC
  • Adjustable low-voltage cutoff to protect your battery investment
  • Forward/Brake with Reverse or Forward/Brake settings
  • Forward and reverse throttle limiting available
  • Four LEDs to indicate functions
  • Three preset drive profiles: 3S, 4S and 5S
  • Quick Programming Card allows adjustments to the ESC without the need for a computer
  • Includes three pre-programmed profiles for convenience
  • PC setup software CD included for complete configuration of profiles
  • Software interface allows for unlimited profile settings and tuning
  • Adjust brake and throttle curve settings with the simple-to-use graphical interface software

Technical Notes

Motor Specifications:
Type: Brushless
Size: 670
RPM: 23,310(@11.1V)
RPM/Volt (Kv): 2100
Cells: 2S-5S LiPo, 6-12 cells NiMH
Weight: 10.8 oz (306 g)
Overall Diameter: 1.54 in (39mm)
Shaft Diameter: 0.197 in (5mm)
Shaft Length: 0.92 in (23.4mm)
Overall Length: 3.56 in (90.4mm)

ESC Specifications:
Type: Sensorless Brushless ONLY
Cells w/BEC: 6-12 Cells (NiMH)/ 2S-5S (LiPo)
Auto Cutoff: Programmable
BEC Voltage: Programmable from 5.2V up to 6.5V at 6A
Forward: Y
Reverse: Y
Brake: Y
Continuous Maximum Current: 160A
Momentary Peak Current: 800A
Input Connector Types: Losi EC5 style
Motor Limit: Losi 8th scale 720 sensorless motors of 3000Kv or less
Dimensions (WxLxH): 2.40x2.56x1.80 in (61x65x46mm)
Weight: 5.5 oz (155 g)