JAMES, EXHAUST GASKETS. 91-09 STYLE Cams Crankcases must be bored to

Crankcases must be bored to accept the larger diameter cylinder

Note: installation requires the drilling of two holes

- Includes hardware - Supports well over 140 HP engines - Die-cast aluminum construction - 544847 for a replacement airfilter element - 542578 for an optional pre-filter / rain sock

Chrome-Plated with a Hi-Gloss black background finish

Compatible with 508721 Bare Bones solo seat with rider backrest

JAMES, EXHAUST GASKETS. 91-09 STYLE Cams Crankcases must be bored to'late' 91 09 conical style. Note: The 86 03 10 up style is preferred by many for better flow characteristics. Note: The 91 09 late style is a conical shaped gasket that was introduced by The Factory in 1991 and replaced, again, with the early style in 2010. Note that the early style will fit all models and is generally seen as the better gasket design. Fits: > 84 20 B. T.; 86 20 XL; 08 12(NU)XR1200; 87 10(NU)Buell XB 5 pieces