BMR Suspension, the leading name in high-performance suspension components, has just released a leaf spring kit designed to give classic GM muscle cars a more aggressive stance and improved handling.

Their new product, the 3-inch Drop Rear Lowering Leaf Springs with Install Kit (PN SP317), is specifically engineered for 1967-69 GM F-Bodies and 1968-74 GM X-Bodies.

This kit solves the common problem with these vintage vehicles: old leaf springs that sag and rust after some time. The SP317 replaces worn-out components with a high-performance three-leaf design that lowers the rear of the vehicle by three inches while also improving ride quality and handling.

This BMR Suspension is attained by a carefully chosen 190 lb/in spring rate that will reduce body roll and increase cornering stability without creating an uncomfortable ride.

The kit, SP317, has everything necessary to make the upgrade as smooth as possible. This consists of new rubber bushings, axle pads, and U-bolts. This is aimed at making sure that there is a quiet and smooth ride while making installation easier. The estimated time for installation (according to BMR) is around 2-3 hours.

Along with the performance benefits of the SP317 kit comes an aesthetic advantage to classic cars. Their lower stance gives them an aggressive appearance, modern yet appealing in the eyes of car enthusiasts for both form and function.

For those who may already have suitable hardware or wish to source their own, BMR Suspension also offers the lowering leaf springs separately as part number SP316. All BMR Suspension products, including the SP317 kit, are proudly designed and manufactured in the USA.

The SP317 leaf spring kit is now available from BMR Suspension and authorized dealers. Check out these links for more information on this kit and other ’67-’69 F-body and ’68-’74 X-body suspension parts.