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Marine Performance Mufflers
- XR-1 Wet/Dry Marine Performance Muffler
- Type: Round
- Inlet Diameter: 4''
- Outlet Diameter: 5''
- Case Size: 12''
BORLA® dives into the high-performance marine exhaust market with the introduction of an all new pair of fully-polished race mufflers, PN400262.
Collaborating with world-renowned Boostpower USA Marine of Newbury Park, CA, BORLA® incorporates its patented XR-1® Multicore race technology to deliver a pair of polished stainless steel muffler/exhaust tips for high performance power boats with up to 1200 BHP. Boostpower's founder, Alexi Sahagian, has done extensive testing with spectacular results, showing the maximized horsepower and flow required by large cubic inch marine engines. His test results also showed a 22-12 decibel reduction through the rpm range with an average -22db at idle, -14db at 3500rpm and -12db at 5800rpm (as tested on a Boostpower 675hp engine and 900sci engine - results may vary). Maintaining power while controlling sound. Just what's been needed.
BORLA's new marine muffler is constructed of high-grade 300 series austenitic polished stainless steel with a heavy duty ¾" base flange tapped for 3/8" stainless steel studs along with a polished mounting inner ring. Our R&D results have shown T-316 stainless to be the most durable material for this application. In fact, we're the ONLY manufacture offering this superior material.
The muffler tips are unique in that they each have a 5" step up outlet on a standard 4" installation for maximum flow without re-cutting your transom. The 12" long component is a breakthrough for larger displacement supercharged marine engines.
And wait till you hear the world famous BORLA® Sound of Power!
Part TypeMuffler
BrandBORLA
Package Height11.0
Package Width11.0
Package Length25.0
Weight11.0 PG
Part CategoryPerformance Parts
Outlet QuantityOne
Inlet LocationCenter
Inlet PositionCenter
Inlet TypeSingle Center Inlet
Inlet Size (In.)4
Outlet StyleSlant cut
Muffler FinishPolished
Body Length7 in (177.8 mm)
Muffler Count1
Inlet Diameter4 in (101.6 mm)
Inlet QuantityOne
Muffler MaterialStainless steel
Outlet Size4 in (101.6 mm)
Inlet Connection TypePipe
Outlet Diameter5 in (127 mm)
QuantitySold as a pair
Overall Length12 in (304.8 mm)
Material304 Stainless Steel
Case Length7 in (177.8 mm)
Internal ConstructionGlass-wrap perforated tube
Case ShapeRound
Body Width6 in (152.4 mm)
Outlet LocationCenter
Body Height6 in (152.4 mm)
Outlet TypeSingle Center Outlet
Case Outside Diameter7 in (177.8 mm)
Outlet PositionCenter
Vendor Part Number400262
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
