Empire Industries New quieter XP1K Turbo Slip on exhaust. Tig welded 304 stainless steel 1 into 2 construction with 6061 Aluminum silencers with billet end caps.. 2 inch perforated core for added power over stock. Substantial weight savings over stock system. Easy to mount with our 4 bolt mounting system. No fuel programmer needed. Nice deep sound! Quiet core/ spark arrestor inserts available. Available in brushed aluminum, ceramic Black or Polished finish Specify finish when ordering.