Radius breather bolts from Lowbrow Customs feature an innovative design with 5-ply sintered stainless steel mesh, providing the proper breathability for your motor while keeping a slim profile and a completely custom look. An internally broached allen allows for a quick and hidden installation method, with the stainless breather element and circlip finishing the job. A perfect match with your choice of air cleaner and carb support brackets, these 1/2"-13 thread breathers fit Evo XL and Big Twin motors. Available in chrome plated or black electroplated steel. Made in Ohio, USA.