Grin Technologies Statorade Electric Bike Hub Motor Cooling Ferrofluid (10 Ml)

This ferrojuice is the business! It’s absolutely essential for any hub motor. I noticed a significant temp drop during long rides and I can tell the motor is happy. Purchase a tube of clear silicon caulk to seal up circumference of motor casing on both sides to ensure this magic fluid doesnt leak out!

Came sealed in original manufacture package grin technology. Worked as described for me. I was able to use it on 2 motors with 10ml syringe.

Before application I would get about 30- 45 sec run time before the thermal protection shut off the motor. After adding less than a quarter tube, I get about 3-4 minutes solid run time! The motor is not enclosed, the fluid stays in place anyway, this stuff is amazing!!

Bought this to try on my electric hub motor on my e-bike. Significant difference in temperature. It is running at acceptable temperatures compared to when I had nothing in it where I burned up my previous motor.

Diy ebike I built, 84v fully charged, running 45 amps so almost 3800w. On longer full throttle rides or up significant hills the rear hub would get pretty hot. Ordered this and no longer needed to worry about slowing down to let hub cool. Overall very satisfied with results. Hub still gets warm but not hot like before.