Hotchkis Sport Suspension 22105 Tri 5 1955-1957 Chevy Sport Sway Bars. Dramatically improve the cornering performance and traction of your 1955-57 Chevy with the Hotchkis Sport Suspension Sway Bar Package. Our performance sway bar package offers fine tunable rear roll stiffness previously unavailable for the classic Chevy Tri-Fives. Cars with wider rear tires and high horsepower engines will greatly benefit from this stability package. Front sway bar is lightweight durable 1 3/8 in. tubular steel 60% stiffer than the stock sway bar (800 lbs./in). The rear sway bar is lightweight durable 1.0 in. tubular steel with two adjustment options: 309 lbs. /in and 480 lbs. /in.