Made in the USA by Speed Dealer Customs. 6-bolt hydraulic clutch cover including mounting hardware. Piston o-rings are chemical resistant. Fill bolt is o-ring sealed. 11/16 min bore cylinder. Note: Professional Installation Recommended - It is the installers' responsibility to make sure all fasteners are tightened before operation of motorcycle. Speed Dealer Customs will not warranty components that are lost/damaged due to improper installation. Installation should be done by experienced professionals or competent home mechanics. If there are any questions regarding installation please contact us before you go any further. Periodic maintenance may be required.