Shift Kits
Sonnax, TransGo, and Superior shift correction kits and shift improvers for firmer shifts, longer life, and performance gains.
Whether you are building a 4L60E, 4L80E, 6L80, 700R4, 68RFE, Allison 1000, or any other popular automatic, we carry the parts to get the job done right. OEM and trusted aftermarket brands.
