A stock style forward planetary gear set is the weak link in high-powered Ford applications running a C4 transmission. Which is why Performance Automatic has redesigned this gear set to incorporate 6 pinion gears as compared to a stock-style 3 pinion. This drastically increases load-handling characteristics. CNC-machining guarantees precise gear alignment and consistent performance. The planet carrier is also machined to accept a roller bearing assembly or use the OE washer.