Front bars are made from 1-1/4'' high-strength steel for long-lasting durabilityPrecision bent and welded for a perfect fit every timeNeoprene o-rings provide traction in all climatesRear highway bars constructed from 1'' tubing compatible with most stock exhaust systems require removal of rear footpegs/floorboardsU.S. Patent #D361311Not recommended for use with extended forward controls or extended floorboards.