Andrews hi-lift valve springs BT84-04 XL

Andrews High Lift valve springs will easily accommodate cams with .550" lift when used with Andrews valve collars ZPN 232591. Installation does not require machining of the heads. Set consists of 4 inner and 4 outer springs. Fits Evolution Big Twin 1984-1999, Twin Cam 1999-2004 and Evolution Sportster 1986-2004.