Hooker Sidetube Slip-In Mufflers - 21021HKR4" Sidetube Slip In Glass Pack Muffler; Sold In Pairs. Part Number: 21021HKR For 4" sidetube sound control, Hooker builds long lasting slip in mufflers. These mufflers are easily removed for racing purposes and are available in a performance style glasspack or our quieter all metal reverse flow style for small and big block applications. Hooker mufflers produce a high level of sound control without restricting engine efficiency. Sold in pairs.
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4" Sidetube Slip-In Glass Pack Muffler; Sold In Pairs.
Part Number: 21021HKR
For 4" sidetube sound control, Hooker builds long lasting slip-in mufflers. These mufflers are easily removed for racing purposes and are available in a performance style glasspack or our quieter all metal reverse flow style for small and big block applications. Hooker mufflers produce a high level of sound control without restricting engine efficiency. Sold in pairs.
Features and Benefits
• Fits 4" Side Tube systems • Performance Style Glass Pack Design • Long Lasting • Easily Removed For Racing • Will Not Restrict Engine Efficiency