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4" Sidetube Slip-In Mufflers

Part #: 21046HKR

UPC #: 090127605417

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This high performance muffler has been developed for vehicles
with 4” sidepipes such as 1965–74 Corvettes or vehicles
equipped with Hooker Super Competition Roadster and Side
Mount Headers. These Mufflers produce an average of 23% more
power than open Headers and feature a high–flow, perforated
core that operates at 99% efficiency. High temperature packing
material absorbs noise while producing a powerful mellow
sound. These mufflers, as tested on a 1968 Corvette with a 427
cu inch engine increased horsepower by 40 at a peak of
5500RPM and 20 ft.–lbs. at peak of 4500RPM versus a leading
aftermarket undercar header/turbo–style muffler combination.
The outer case is constructed of durable 16 gauge aluminized
steel protected by electrostatically applied high–temperature black
paint. The inlet/outlet is a 2.5 perforated core in a 4” casing.
Maximum Flow 4" Sidetube Slip–In Muffler; These high performance Mufflers produce an average of 23% more power than open Headers


Features
  • Fits 4" Side Tube systems
  • Maximum Flow Muffler Design
  • Easily Removed For Racing
  • Durable 16 Gauge Outer aluminized Steel Case
  • Electrostatically applied High-Temp Black Paint Finish
  • 2-1/2" to 4" contoured inlet/outlets
  • 2-1/2" high flow perforated core in a 4” casing
  • 2.5" Perforated Core Surrounded by High temperature Sound Absorbing Packing Material

 
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