Hooker Sidetube Slip-In Mufflers

4" Sidetube Slip-In Glass Pack Muffler; Sold In Pairs.

PART# 21021HKR

Suggested Retail: $222.95
Your Price: $199.95
Free Shipping on orders over $100*


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.


  • Fits 4" Side Tube systems
  • Performance Style Glass Pack Design
  • Long Lasting
  • Easily Removed For Racing
  • Will Not Restrict Engine Efficiency


Inlet4 inch center
Outlet4 inch center
Product TypeMuffler
Type of MufflerSide-Tube Slip-In
Also Bought

    *Free Shipping & Handling only offered to the continental US on orders over $100.

    Some parts are not legal for use in California or other states with similar regulations.