Dobinsons 2.6 IMS shocks for Sierra/Silverado 19+ The shocks have a gas adjustment valve and height adjustment rings. Very light use, two months, and still under warranty with the invoice from the dealer. Fitted with King springs, giving a 5 cm lift, and you can raise it further with the shock absorber. Dobinsons IMS 2.6_GMC Sierra/ Chevrolet Silverado 19+ King springs *Sold without control arms*