Sonnax Performance Packs
The Best Parts for Performance & Heavy Duty Recalibration
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.
Firmer Shifts under Load without Low-Speed Harshness.
It's the ultimate way to get an impressive transmission that responds to throttle and increased load with quick-firm shifts.
Consistent recalibration results with tuning options.
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.
No Special Tools Required
See what people are saying about Sonnax Performance Packs:
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
In a nutshell, I love it. It shifts exactly like I think it should. Not too hard, not too soft. Harder acceleration and the shifts firm up nicely."
Lindsay Transmission Service