NetGain uses only the finest 1350 slip-yokes for our patent pending EMIS technology solutions. These slip yokes are manufactured by Spicer/DANA. They are 1350 series universals, allowing for connection to almost any manufacturers driveshaft. We have personally used these slip-yokes on vehicles that have produced almost 3,000 ft. lbs. of torque. These slip-yokes are also the ones we recommend for use with our TransWarP motors!