Hooker 4" Sidetube Slip-In Mufflers - (High Performance - Maximum Flow)
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Hooker 4" Sidetube Slip-In Mufflers - (High Performance - Maximum Flow)

Product Code: HOL 21046-HKR

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. Sold in pairs.

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
USD $200.95
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