Hex 5/16X18X1 1/2 Socket Head Silencer Screw

Ref : AA0512.1CUZ

As per photos

Brand : Buell

Type : New

Fit on : 

This part is compatible with the following motorcycles :

Cyclone
M2 : (1997-2002)
M2 (w/Lower Seat) : (2000-2001)
M2L Low : (2001-2002)

Lightning
S1 : (1996-1998)
S1W White Lightning : (1998)
X1 : (1999-2002)
X1 Lightning Millennium : (2000-2001)
X1 Lightning Racing : (2000-2001)

Thunderbolt
S2 : (1995-1996)
S2T : (1996)
S3 : (1997-2001)
S3T : (1997-1998, 2000-2002)