Bag Over Damper Air Spring, 20ID top, Bellows Type, 1/4" compression fitting (1/8"BSPT)for DOT line. For use with all MAX dampers with m52p1.5 threaded bodies with 65mm x 49.8od unthreaded upper shock bodies. All 2015 and earlier dampers need to be sent in for servicing to meet the spec above. For use with m20 top shafts found in McPherson fronts only. Fitment excludes m52x2.0 thread version: s13, s14, SC, FC, r32 5" Inflated diameter Sold individually Lifetime manufacturers defect warranty