Motor Mounts

Skate  Kastle's philosophy has always been about protecting your board and offering the strongest products available. 

We started by selecting a high strength Chromoly steel for our Motor Mounts to ensure the highest quality end product. 

Broken motor mounts

Current aluminum mount problems

Aluminum motor mounts have well documented breaking problems.

From DIY offerings to some of the bigger electric skateboard manufacturers this has continued to plague the market:

  • Cracking and breaking at the truck mounting area.
  • Doesn’t protect the end of the motors from damage.
  • Motor mount bolts need to be tight due to the vibration and torque.
  • Tightening bolts down so they don’t slip can compress and weaken aluminum
  • When the mount does break it can be catastrophic, potentially needing to replace the motor and damaging the board

The science and numbers behind it all

We designed our precision  machined mounts from 4140 Chromoly to combat the high stress and demanding fast paced environment of today's electric skateboarder. Traditionally used for roll cages, clutch parts, firearms and structural tubing it was an excellent choice due to it's toughness, impact resistance and high fatigue strength. 

4140 Chromoly vs. 7075 Aluminum: 

Shear Modulus: 11,600 ksi vs. 3,900 ksi

Elastic Modulus: ~30,000 ksi vs. ~10,400 ksi

Hardness, Brinell: 197 vs. 150

Tensile Strength: 95,000 psi vs. 83,000 psi

Our Evolve Skateboard Motor Mount Solution

We originally developed the mounts for the DIY market but due to the demand and frequency of Evolve Skateboard motor mounts breaking on stock boards also released an upgraded Evolve Skateboard motor mount replacement for current owners.  

In addition to the upgraded strength the mounts protect the motors from damage as well as helping stand up your board when not riding . We offer them in a variety of colors to customize and upgrade your board!