Stage I & II Replacement Backing Plates

Stage I & II Replacement Backing Plates are constructed from forged Billet aluminum and features the patented Big Sucker hidden breather technology. Each hidden breather is o-ringed at the heads and exits at the mouth of the injector / carb to provide efficient engine breathing and a virtually closed looped system. Radius air inlet increases performance by providing unobstructed air flow.
Features
  • Choose from Standard aluminum, chrome or black powder finish.
  • Fits Stage I or Stage II.
  • Eliminates the need for any external hoses or hardware.
Stage I Fitment:
  • 2008-13 FLT models
  • 1999-13 Twin-Cam
  • 1993-1999 Evolution
  • 1999-2001 FI FLT
  • 1988-2014 XL
Stage II Fitment:
  • 2008-13 FLT models
  • 1999-14 Twin-Cam
  • 1993-1999 Evolution
  • 1999-2001 FI FLT
  • 1988-2014 XL

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