Kenworth Truck Company's AG230 is a non-torque reactive parallelogram single-axle rear air suspension for weight-sensitive truck operators. Fully disc brake compatible, the suspension offers a superior ride compared to that offered by traditional spring suspensions, says the company. The 4-bag proprietary AG230, with a capacity of 23,000 lbs, is for on-highway and vocational applications. Distinctive air springs with special lower pistons adjust continuously to changing road conditions for superior ride quality.