http://www.rcvperformance.com
"History
RCV Performance Products is a division of Aircraft Gear Corp., a family-owned company with divisions that have been manufacturing aerospace and automotive drive train components in the U.S. for more than 60 years.
Who We Are
We are off-road enthusiasts who understand the vehicles in which our parts are installed, as well as the hard core off-road environments where they will be used. We are honored to have our products considered "revolutionary" by experts in the off-road industry.
What We Do
At RCV, we use our engineering and manufacturing experience to develop and produce CV axles and other high-performance drive line components for the automotive, truck, and bus industries. Our main focus is on patented CV Axle conversions and replacement IFS axle shafts for the automotive off-road market. RCV provides "off the shelf" solutions as well as caters to custom application projects, and other large and small driveline projects as they come in the door."
Taken right off their website. Basically they make kickass axles. However, the previous versions for Raptors were plagued with issues.