Mercruiser Replacement Riser 
$1,207.00
3″ taller thru transom and silent choice stainless steel riser pipes fit stock Mercruiser center rise manifolds, as well as Glenwood Magnaflow manifolds. These pipes have shown a performance gain of 9 horsepower in our dyno test over stock risers. (Sold in pairs)
All kits include all necessary mounting hardware and gaskets. Weld on or Bolt on brackets for Shift, ECM or EFI, see Merc Replacement Risers or Related Products.