Heavy duty performance lowering springs are the way to go when lowering your truck. These springs improve handling and performance. Rear springs are offered in 2, 3, 4, or 5 inch drop by themselves, and when used with Brothers lowering block kits you can achieve up to a 5-1/2 or 6-1/2 inch drop. (Note: when lowering more than 4 inches in the rear, a C-notch frame modification must be used for proper frame to axle clearance). Lowered shocks (available separately) are recommended with all lowering coil springs. Lowering shocks, rear axle bumpers, and rear coil spring retainers are sold separately. Fits 1/2-ton with truck arms/coil spring rear suspension.