S&S, steel breather valve & spacer set. +.030" OD - L77-99 B.T. (EXCL TC) 521793 For E84 Big Twin models

For E84 Big Twin models

Fits H-D models with OEM side mounted horns

Order 2 for a pair

Great for use in many stock or custom applications

S&S, steel breather valve & spacer set. +.030" OD - L77-99 B.T. (EXCL TC) 521793 For E84 Big Twin modelsWith steel breather valve spacer set for correct end play. +. 030" oversize steel breather valve. Used to save worn or damaged crankcases. Okay for stock or high performance replacement. Note: JIMS has a +. 030" breather hole reamer tool which is available as 978343. Note: S&S breather valves come with elongated breather holes to increase the duration of the vacuum, allowing more oil to be drawn from the cylinder heads. This has no disadvantage in any