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Drivetrain› Clutches and Components

Sonnax

Smart-Tech Clutch Kit

$197.45 $131.28 Save $66.17

SKU: 77734-01K

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Overview

The Sonnax Smart-Tech clutch kit is a performance upgrade for GM 4L60, 4L60-E, 4L65-E, and 4L70-E transmissions. It includes eight .067-inch BorgWarner High Energy friction plates and seven Lindered steel plates, with specific thicknesses for enhanced capacity.
Show original supplier description
The Sonnax Smart-Tech clutch kit (77734-01K) is engineered to optimize clutch capacity and prevent burnup in GM 4L60, 4L60-E, 4L65-E, and 4L70-E transmissions. This kit is specifically recommended for use with Sonnax Smart-Tech input housings. This kit contains eight BorgWarner High Energy friction plates, each .067 inches thick, and seven Lindered steel plates. The design allows for a taller clutch pack by accommodating an additional OE-thickness friction and steel plate, significantly enhancing the transmission's ability to handle increased torque and heat. The kit includes five steel clutch plates measuring .095 inches thick and two steel clutch plates measuring .107 inches thick. This precise combination of friction and steel plates contributes to improved clutch performance and durability. When combined with a Sonnax Smart-Tech input housing, this clutch kit offers the most effective solution for upgrading the 3-4 clutch capacity in these GM automatic transmissions.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandSonnax
Part Number77734-01K
CategoryDrivetrain
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

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