With the 6R and other solenoid controlled transmissions we do not use the terminology “shift kit”. It is not as simple as it used to be where you could change the hole sizes in a separator plate or stiffen up some springs. The new “valve bodies” don’t operate the same way. All fluid paths are basically controlled by solenoids, meaning almost all shift feel is done through tuning. Why purchase our SPE 6R140 solenoid body? Whether your truck’s stock, highly modified, or you’re a transmission builder and want to know what you’re buying, this is the best 6R140 valve body on the market.
SPE 6R140 PROPRIETARY SOLENOID BODY