Running the 700-R4/4L60-E family of transmissions at extreme power levels demands innovative parts designed not only to work better, but to work better together. From street/strip upgrades and heavy-duty jobs to top-tier racing builds, Sonnax makes it easy to deliver rock-solid transmissions customized for any performance level.
Build the killer 4L60-E with SonnaxView, print or download build charts
Quick upgrades for big performance without a big price tag.
Upgrades for performance recalibration and durability, no trans removal required. Most change in shift feel comes from the servos.
Heavy-duty parts and recalibration allow transmissions to endure power levels beyond what a stock transmission is built to handle.
Ultimate lineup delivering maximum strength, durability and quick shifts featuring Smart-Tech® parts to ensure these units stay out of the shop.