The Reedy Sonic 866 1/8 Scale Buggy Sensored Brushless Motor was developed over several months of testing by the Reedy engineering staff and factory team drivers, resulting in a motor that delivers performance that exceeds what is required at the highest level of competition. The Sonic 866 is available in two kV versions, and is optimized for 1/8 eBuggy, while its slightly longer brother the Sonic 877, is recommended for 1:8 eTruggy. However, the motors are interchangeable between chassis types and can be used in a variety of applications to create a wide range of performance options suitable for a wide variety of track conditions. All versions feature a precision machined case with an integrated heat sink to lower operating temperatures. This results in less fade over the course of a race, longer run times, and increased motor life. Sensored operation results in a smooth and controllable power band, while a powerful 4-pole rotor is supported by precision ball bearings for maximum power output and reliability. Features: 1900KV Heavy-duty CNC-machined can Integrated heat sink Dual precision ball bearings High-torque 4-pole rotor Heavy-duty solder tabs 5mm shaft Competition proven 200mm sensor wire Built to R.O.A.R. specs Specifications: Cells: 2-6S LiPo Diameter: 40.0/42.5mm Length: 65.0mm Shaft Diameter: 5.0mm Weight: 328g