?ksp performance ksp 1-3" torsion key for silverado sierra 2500hd 3500hd 2011-2019, adjustable forged torsion bar key compatible with chevy gmc heavy duty trucks, front suspension level kits work on 8 lug pickup black torsion bar key 2011-2019 silverado 2500hd is up for auction in Automotive. The current bid is $1.00, 98% below the $59.99 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.