Click the unit for a complete list of features and benefits for each Performance Pack.
Performance enthusiasts look to Sonnax when building stronger, faster, more reliable transmissions. Performance Packs combine key Sonnax performance and heavy duty parts into powerhouse kits which take transmissions to the next level.
Performance Packs let you achieve firmer shifting under load without sacrificing low-speed drivability. It's the ultimate way to get an impressive transmission that responds to throttle and increased load with quick-firm shifts.
Select kit components are precision engineered to recalibrate pressures and shift accumulation. Detailed, step-by-step installation instructions make it easy to adjust transmission performance levels with confidence.
High-quality, innovative and durable Sonnax parts target commonly worn areas in the transmission and prevent future damage.
"Sonnax really nailed it with this kit."
Owner of Level 10 Transmissions, after ordering his 20th Sonnax 4L60E Performance Pack.
"The Performance Pack works like a dream."
Speed Rated Motorsports
Fort Pierce, Fla.
"The best working performance units we have done, and that's not from me, but my customers."
Advanced Transmission Care
Note: Formerly a popular Sure Cure® option, this kit has been further refined to become a Performance Pack with the inclusion of intermediate & direct clutch feed seal parts.
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