Faster tougher stronger

Sonnax Smart-Tech®

Sonnax Smart-Tech^®

Protect your customer's upgrade investment

Regardless of the unit, Sonnax Smart-Tech^® products are the best of the best. Through a fusion of top-notch expertise, innovative engineering, technical mastery and precision manufacturing, these groundbreaking parts overcome OE limitations to deliver the ultimate in transmission performance.

GM Ford Chrysler

GM

SmartShell Heavy Duty Reaction Shell Kit

GM 4L60, 4L60-E, 4L65-E, 4L70-E

SmartShell^® Heavy-Duty Reaction Shell Kit

Solves Multiple Problems in All Performance Applications

GM 4L60, 4L60-E, 4L65-E, 4L70-E Input Housing Kit

GM 4L60, 4L60-E, 4L65-E, 4L70-E

Input Housing Kit

Upgraded Housing Eliminates 3-4 Clutch Failure

GM 4L80-E, 4L85-E Overrun Clutch Valve Kit

GM 4L80-E, 4L85-E

Overrun Clutch Valve Kit

Outsmart 4L80-E Overdrive Roller Clutch Failure

GM Powerglide Ratio-Style Servo Kit

GM Powerglide

Ratio-Style Servo Kit

The ULTIMATE Servo for Even the Most Extreme Applications

GM Powerglide 10-Clutch Drum

GM Powerglide

10-Clutch Drum

Best Drum on the Track

GM Powerglide 10-Clutch Drum

Drum Module

Optimize Performance & Consistency

Ford

Ford 4R70E/W, 4R75E/W, AOD, AODE High Capacity Forward Clutch Drum Kit

Ford 4R70E/W, 4R75E/W, AOD, AODE

High Capacity Forward Clutch Drum Kit

Tackle Chronic Forward Clutch Drum Breakage & Increase Clutch Capacity, No Modifications Required

Ford 4R70E/W, 4R75E/W, AODE Forward Clutch Drum Kit

Ford 4R70E/W, 4R75E/W, AODE

Forward Clutch Drum Kit

Forged, One-Piece Design Eliminates Stress Points

Ford 4R70E/W, 4R75E/W, AODE Direct Clutch Drum & Shaft Kit

Ford 4R70E/W, 4R75E/W, AODE

Direct Clutch Drum & Shaft Kit

All-in-One Smart-Tech Easily Handles the Highest Horsepower/Torque Levels

Ford 6R140 Converter Clutch Kit

Converter Clutch Kit

Rebuild the 6R140 with Confidence

Chrysler

Chrysler A727 High Capacity Input Shaft & Piston Kit

Chrysler A727

High Capacity Input Shaft & Piston Kit

Increase Direct Clutch Torque Capacity, No Modifications Required

68RFE Smart-Tech® Overdrive Clutch Housing Kit

Chrysler 68RFE

Overdrive Clutch Housing Kit

Maximize Clutch Capacity & Squawk Resistance

Chrysler 48RE, 47RH/RE High Capacity Input Shaft & Piston Kit

Chrysler 48RE, 47RH/RE

High Capacity Input Shaft & Piston Kit

20% More Direct Clutch Torque Capacity, No Modifications Required

Chrysler 48RE, 47RH/RE Big Input Shaft Kit

Chrysler 48RE, 47RH/RE

Big Input Shaft Kit

THE END of Input Shaft Failure

See all High Performance Parts

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