Pro-Line is now offering Pro-Spline HD Axle packs for the front and rear of the Traxxas Slash 4×4, Stampede 4×4 and Rally. These pre-assembled axles debuted on the Pro-Line Pro-MT Kit and are designed to handle serious power. Made from hardened black oxide coated steel, the driveshafts have a true six-sided spline that slides smoothly throughout the suspension travel without having to worry about stripping out like the stock plastic ones. The front axles feature an improved front outer pivot point, which has been moved to be in-line with the steering axis (king pin) to eliminate the forward and backward motion of the stock driveshafts when turning the wheels and results in more consistent power delivery during cornering
6273-00 Pro-Line Pre-Assembled Front Pro-Spline HD Axles
6273-01 Pro-Line Pre-Assembled Rear Pro-Spline HD Axles
Source: Pro-Line