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Price: $170.95

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4" Sidetube Slip-In Mufflers

PART #: 21046HKR

UPC #: 090127605417

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
5500 RPM 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

  • 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

Shipping Dimensions
L 38.000 in. x W 9.000 in. x H 6.000 in.
Weight 21.000 lb.

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