DSS Competition Products has developed a bolt-on Main Support System. This system requires no costly main cap machining. Performance engines suffer from considerably higher stress loads compared to normal passenger car engines. Nitrous oxide injection, superchargers or turbochargers can more than double the normal amount of stress placed on main bearing caps, fasteners, and cylinder block main webbing. Aside from the power adders competitive motorsports such as drag racing, circle track, autocross, or roadracing can have an equal effect on a modified or stock engine. These internal stresses can cause the main bearing caps to move or walk from side to side. Movement is then transferred to the free end of the main cap bolts or studs. Eventually the threaded bolt holes in the block crack. Main bearing cap walk can allow the bearing inserts to spin, the crankshaft to break, or the main webs to crack and fail. Due to the close proximity of the Main Support System to the crankshaft and rods it also does a very good job of stripping oil off of the crank. This is better than a windage tray or scraper because of the double benefit of windage control and the increase in block strength that it provides.

With a superior strength-to-weight ratio 6061 T6 aluminum is more expensive than steel but much more effective at dampening harmonics, which is the leading cause of main cap walk and block failure. The lightweight 3/4" thick Main Support System evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine. The added strength and rigidity virtually eliminates all main cap "walk" or movement. Securing the loose end of the main studs provides stability unequaled even by a 4-bolt main block. Additionally, a production 2- or 4-bolt block strengthened with a DSS Main Support System is an economical alternative to an expensive 4-bolt aftermarket or rare 4-bolt production block. The bolt-on kit includes custom ARP main studs and all necessary hardware.