Camaro Mono Leaf Spring - Front bolt: 1/2", Rear eye: 1 5/8", Rate: 225, True arch: 6. 5" Recommended Weight: 3350-3600 lbs. (52-54% Rear Weight). Landrum offers Parabolic Mono Leaf Springs for the Chevrolet market with various spring rates. The Landrum parabolic spring is designed to replace both the mono and multi-leaf applications. These springs have been tested and proven very popular in both the drag and oval racing markets. It's unique design promotes more forward bite, less pinion angle loss, and better weight transfer during acceleration than the O. E. (original equipment) leaf springs. With 4 spring rates to choose from, the correct motor to rear weight percentage is easily obtained. For the lower U-Bolt pad and shock mount, use the LSS310 and LSS311 pad; for the upper shock mount use the LSS322 or LSS323 mount. For improved performance Landrum recommends using (1) #LANLSS205 front bushing kit and (2) #LANLSS214 rear bushing kits. These components allow leaf springs to work to their maximum capacity by providing solid displacement for the rear axle housing. This improves traction and increases overall consistencyPit Stop USA offers Landrum Chevrolet Parabolic Mono-Leaf Spring - Rate: 225 lb. 21-146SP at low everyday prices. Be sure to check out all of our products from Landrum Performance Springs including Landrum Performance Springs Chevy Mono-Leaf Springs.