Sonnax 76656-02K, AODE Smart-Tech® Direct Clutch Drum & Shaft Kit

Most failures in these units occur where the direct drum and stub shaft connect. Even other aftermarket upgrades that rely on a heavy-duty shaft will sheer in this area under extreme conditions. Unlike those two-piece assemblies, the all-in-one Smart-Tech easily handles the highest horsepower/torque levels. This design eliminates the need for splines, ensuring the drum and shaft remain strong and unweakened. The shaft itself is significantly thicker and 2X stronger than the OE. The kit’s custom, heavy-duty sun gear requires the use of the integrated shaft with its larger diameter.

Insufficient holding power is another area AODE transmissions fall short, but installing thinner aftermarket steels and backing plates to increase clutch capacity isn’t ideal. Those components increase clutch pack flex and heat build-up, making them the primary cause of repeat burn-up. To improve both performance and long-term reliability, the Smart-Tech’s custom drum and piston hold an OE backing plate and seven OE frictions for 17% more clutch capacity than the six-friction stack-up.

Included in the kit is a heavy-duty sun gear whose 2.40/1.46 ratio is ideal for higher power, dedicated racing vehicles.

• One-piece design eliminates weak point where drum splines strip and shafts break
• Rugged shaft is 50% thicker and twice as strong as OE
• Custom drum and piston deliver 17% more clutch capacity with optimum protection against burn-up
• High-strength drum and shaft are precision-machined from hardened 8620 steel
• Unique sun gear with race-ready, 2.40/1.46 ratio is precision-machined from 9310, heat-treated steel