Hooker 21021HKR Sidetube Slip-In Glass Pack Muffler, 4 Inch
Universal Fit, Glass Pack Muffler Type, 4.00 Inlet Size, 4.00 Outlet Size
- This item ships directly from the manufacturer. It may take an additional 2 business days for Hooker Headers to ship this item.
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
- This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
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
More Like This
Hooker 21002HKR Sidetube Slip-In Muffler, 4 Inch, Sold In Pairs
Hooker 21003HKR Sidetube Slip-In Muffler, 4 Inch, Sold In Pairs
Hooker 21046HKR Maximum Flow Sidetube Slip-In Muffler, 4 Inch
Hooker 21601HKR Maximum Flow Muffler, Single 2-1/4 Inch Offset Inlet
Hooker 21604HKR Maximum Flow Muffler, Single 2-1/2 Inch Offset Inlet
Hooker 21605HKR Maximum Flow Muffler, Single 3 Inch Offset Inlet
Hooker 21606HKR Maximum Flow Muffler, Single 3 Inch Center Inlet
Hooker 21630HKR Maximum Flow Muffler, Single 3 Inch Offset Inlet
Hooker 21641HKR VR304 SS Muffler, Single 2-1/4 Inch Offset Inlet
Hooker 21642HKR VR304 SS Muffler, Single 2-1/2 Inch Offset Inlet
Q & A
Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
Our Tru-Ram Exhaust Manifolds are one of our most popular items. Tim provides more details about them and gives you a great look at them.
Tim gives a little bit of history on the Ford Y Block and shows some of the parts we have to offer.