Breather Bolts
$30.00
Stock airboxes on late Evolution-powered Sportsters and Big Twins integrate a provision for crankcase breathing through the cylinder heads. Eliminating the airbox to run an aftermarket air cleaner also eliminates the hollow breathing bolts.
• Fits Evo with head breather (Sportster 1991-2022, Big Twin 1993-1999 exc. Twin Cam)
• Available in Raw Machined finish
• Carb support brackets (link) available separately
• Made in USA
• CNC-machined from 6061 billet aluminum
These bolts offer an unobtrusive, alternative crankcase venting option when installing aftermarket air cleaners on your Harley-Davidson. They are CNC-machined from 6061 aluminum