Bitter End – Old School Choppers, Inc. – One Stop Shopping for Hardcore Choppin’
* Allows for quick idle mixture adjustment with no tools
* Precise adjustment reduces emissions and helps to reduce off idle spit
* Knurled edge for easy grip
* Precision tip shape for maximum efficiency
* Requires removal of the factory installed welsh plug for installation
Yost Performance
Fits Big Twin 1990/1999, Twin Cam 1999/2006 & Sportster 1988/2006
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