The Sonnax super size servo can be set-up for high performance street applications as well as for all-out racing by including or excluding springs, shims, and spacers included with the kit. The Sonnax design is a radical departure from the OEM design to improve strength and reduce material and machining time in order to provide a higher quality, more complete kit, at a lower cost.
The sealing characteristics have been improved throughout the design and it features the addition of an o-ring seal at the intersection of the servo pin and the piston. This prevents any crossover leakage between the apply and un-apply sides and ensures all apply pressure gets to the piston for good solid shifts.These features result in the firmest 1-2 and 2-3 shifts and help to clean up the kick down response from 3-2. The item "Sonnax 200-4R Billet Servo K65703 2004R Transmission Super Hold Grand National" is in sale since Thursday, April 25, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Transmission & Drivetrain\Automatic Transmission & Parts\Automatic Transmission Parts". The seller is "oregonperformancetransmission" and is located in Salem, Oregon. This item can be shipped to United States.