Instruction available here

They make a world of difference in case of a mishap

Originally cylinders & heads are bolted together without the use of any sort of head gasket

thread and length

80-81 CX 500 Custom 500cc

heinz bikes clubstyle aluminium fat bar handlebar risers Top Clamp Color:Silver Instruction available hereHeinz Bikes Clubstyle Aluminium Fat Bar Handlebar Risers Heinz Bikes handlebar risers are crafted from high quality billet aluminum. Clean look with pre drilled holes for internal wiring. These risers are perfect for riders seeking extreme stability and premium craftsmanship. Features: High quality billet aluminum construction Available in high gloss black or silver anodized finish One piece clamp in black, gold, red, or silver anodized finish Fits 1.