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

Instruction available here

Cleans stainless

By City Huracan Motorcycle Jacket Black

12mm is generally used on Harley models 2007 and later

heinz bikes clubstyle aluminium fat bar handlebar risers Top Clamp Color:Silver Originally cylinders & heads areHeinz 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.