Quiet Baffles
Quiet Baffles
Quiet Baffles for Metric Cruisers
Quiet Baffles for Harleys
Quiet Baffles
Smartpartz for Harleys
Quiet baffles
Quiet Baffles
Hard Kore 
Quiet Baffle
Original Baffle
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Quiet baffles available for immediate delivery.
Call Smartpartz tollfree on 1-800-560-0368 within USA, 
or 714-464-2184.
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MSRP $69.95 per pair (plus shipping & handling, tax if applicable)
Hard Krome 2.25" Drag Star Staggered Duals
(where muffler outside diameter is 2.25")


2 Hard Kore Quiet Baffles, 
1 Allen Key, 2 screws.

Use Loctite on all screws.
Use WD40 on end of original baffle to ease reinstallation.

1.  Remove original baffle with allen key provided.
2.  Drill 5/16” hole in original baffle 5/16ths of an inch from end of the original baffle as shown above.
3.  Insert Hard Kore Quiet Baffle into original baffle so that the Hard Kore Baffle is hard up against the end of the original baffle and the threaded tab is centered in the hole you drilled.
4.  Reinsert original baffle with Hard Kore Baffle into exhaust pipe.  Align hole.  Reinsert allen screw from original baffle through the exhaust pipe, through the hole you drilled and into the Smartpartz Hard Kore Quiet Baffle, and tighten.

* NOTES :  
(1) The baffles may create a slightly rich condition in some circumstances.  As with all motor modifications, some rejetting may be required.   

Hard Kore Quiet Baffles    for 
Hard Krome 2.25" Drag Star Staggered Duals
* TM
Baffle tab
Exhaust pipe
Exhaust pipe
--5/16" Hole You Drilled
Exhaust pipe
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Generic Pic.  Shows original baffle slid out of exhaust and Smartpartz baffle tab slides into end of original baffle to line up with hole you drilled.
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