When I say the word Driveshaft in the RC world, the first name that comes to mind is MIP. The main reason is they make the absolute best driveshafts on the market, especially for high voltage, torque situations like the Axial Yeti.
Check out The RCNetwork on Facebook at:
Here's where I got it and some info from MIP:
What do you get when an off-road race car meets a rock crawler? Well the dynamo combo gives you a Rock Racer! Axial has dived in head first and given both bashers and racers a car that they can get excited about, the Yeti! Since the Yeti comes with a stock plastic rear driveshaft, we knew you would want better, and the Yeti X-duty Drive was born. With a few adjustments to our proven drive hubs we were able to fit in a rock crawling and basher approved X-duty Design axle to accommodate all the power and thrashing you may put it through. Buy Once, Buy MIP! Made 100% in the USA!