Turntide Technologies has announced that its Sierra Echo-S, an EV powered by Turntide axial-flux motor technology, will compete in King of the Hammers 2026 off-road race. The entry is intended to prove out off-road electrification in a race that combines high-speed desert sections with slow, technical rock crawling. The Sierra Echo-S aims to be the first purpose-built electric vehicle designed from the ground up to complete the race.
The EV uses Turntide compact axial-flux motors and power electronics to target high torque and efficiency for climbing steep, uneven terrain. Turntide says the compact motor packaging allows the motors to be placed closer to the vehicle center for balanced weight, with the goal of putting more power to the ground and improving control and precision during off-road driving.
Sierra Echo-S features an 18.6 kWh battery and a 420 V nominal electrical system. The axial-flux motor is specified at 235 Newton meters of torque at 1,500 rpm. Turntide also specifies a 4.56 gear ratio, rugged 33-inch tires, a 2.64 horsepower-per-pound power-to-weight ratio, and 0-60 mph acceleration in 3 seconds.
Beyond off-road EV racing, Turntide is applying the same axial-flux electrification approach to off-highway use cases, including heavy construction.
“We are taking on this race to provide a glimpse into the future of off-highway electric mobility,” said Jason Glass, North America Business Development Director. “Our technology delivers the performance and torque necessary to excel in the toughest and most demanding conditions from extreme off-road racing to heavy construction. The off-highway industry is at an exciting turning point, and we are proud to be at the forefront of this evolution.”
Source: Turntide Technologies
