Seller notes

Sonnax SmartShell® Heavy Duty Reaction Shell KitFits: 4L60 / 4L60E / 4L65E / 4L70E Includes:Heavy Duty Reaction Shell Enclosed Thrust Bearing Custom Roller Clutch Race 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 react...

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