2007-2019 Chevy Silverado / GMC Sierra 1500 Rear Shock Crossmember RB7341 Rust Buster FrameworksThe Rear Shock Crossmember on 2007 2019 Chevy Silverado GMC Sierra can weaken or break away from the over axle frame over time. When this breaks, it can severely impact the ride quality of the vehicle and potentially cause overstressing to the frame. That's where Rust Buster comes in. We have designed and built this replacement thinner than the original factory component out of high quality 11 Gauge Steel, adding strength to your frame that will