The RPM True-Track Rear A-arm Conversion Kit for the Revo eliminates some of the biggest headaches associated with toe link rear ends. Rear toe angles are nearly impossible to set accurately and there isn't a gauge currently made that can accurately identify whether each individual wheel’s toe angle is set correctly in relation to the chassis. The RPM True-Track rear end kit completely eliminates the rear toe links, locking in the rear toe angle at a solid 1.5 degrees per side for a total rear toe-in angle of 3 degrees. By getting rid of the rear toe links, we’ve completely eliminated all rear bump steer! That means the rear toe angle remains consistent throughout the entire range of suspension travel, providing superior rear end tracking regardless of the terrain. Identical to our T/E-Maxx True-Track Kit, the Revo True-Track Kit retains the stock upper pivot ball in the new, ultra beefy RPM axle carrier to allow precise camber adjustments while the lower pivot ball has been eliminated in favor of a rock-solid 4mm diameter hinge pin that locks in the rear toe angles for race winning consistency (hinge pin replacement part #80970). All aspects of the RPM True-Track Conversion Kit have been beefed up for rugged durability and slop free movement throughout its range of travel. Additionally, we’ve incorporated our oversized bearings into the new RPM axle carrier design, providing an additional 2mm more bearing contact with the axle while doubling the bearing load rating & tripling the fatigue rating over the stock bearings.