Sonnax 77749-02K, 4L60 / 4L60E / 4L65E / 4L70E SmartShell® Heavy Duty Reaction Shell Kit

$ 112.00

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SKU: 77749-02K, TS S74624SS, a20 ra b12 Categories: , , Tags: ,

Description

4L60 / 4L60E / 4L65E / 4L70E SmartShell® Heavy Duty Reaction Shell Kit, Sonnax 77749-02K. 

Solves Multiple Problems in All Performance Applications

In GM 4L60, 4L60-E, 4L65-E and 4L70-E units, bulky aftermarket shells always fall short when splines continue to strip and the shells break under stress. A chronic problem with both OE and thicker aftermarket shells is failure of the rear planetary bearing. From daily jobs to extreme builds, the Sonnax SmartShell heavy-duty reaction shell kit 77749-02K is the only way to prevent shell failure AND protect the bearing.

The SmartShell avoids the weight found in traditional, heavy-duty aftermarket shells thanks to a unique combination of improved design and manufacturing for a super strength shell that’s only slightly bulkier than OE. To prevent thrust loads from overwhelming the captured planetary bearing, the SmartShell features a larger bearing and custom roller clutch race. These parts re-route thrust loads through the carrier, completely bypassing the delicate bearing.

  • Stops spline stripping
  • Prevents hub breakage
  • Eliminates planetary bearing failure

Features:

  • Heavy Duty Reaction Shell
  • Enclosed Thrust Bearing
  • Custom Roller Clutch Race

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Additional information

Weight 6 lbs
Dimensions 10 × 10 × 9 in