Suggested Retail:$71. Monroe Shocks & Struts Max-Air MA769 Shock Absorber, 21.2 x 7.9 x 3.2 inches. Ideal for vehicles that consistently haul heavy loads or tow trailers, Monroe Max-Air air shock absorbers are designed to maintain level vehicle height.These shocks can be inflated or deflated as needed, up to 150 PSI, to maintain ride height when under load with additional weight up to 1,200 lbs. Capacity is limited by vehicle suspension, tires and transmission. See vehicle owner's manual for details.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.