DK Custom Products 12 Inch BEEFY Struts Sportsters ~ Dynas " HardTail " Kit for Harley-Davidson DK-12-STR Made from American Cold Rolled D.O.M. Steel - Struts are a BEEFY One Inch in Diameter 1" with 1/4" wall DOM Seamless is MUCH stronger than 3/4" solid -simple physics- Better Looking too! E-Z DIRECT FIT BOLT-ON INSTALL Using stock bolts (1/2" mounting holes) Center to Center 12" will Slam your Ride! We also have these in 10", 11" & 13" Lifetime Warranty