XS650 Exhaust Systems
Exhaust Kit EX-1 $300
1/2 mile style, 2-1, with reverse cone megaphones, right side exit. Includes all mounting hardware.
"Looks and sounds great!!!" According to AR.
Click on logo for more stuff from Omar's
1/2 mile 2-2 right side exit 
2-2 Hooligans
XS650 Manx with Holligans
Omar also produces an extensive range of products for the XS650 including some excellent exhaust systems. Their newest is a 2-2 high pipe on the left side for mile racing. I will put up pics as soon as I get them from Phil. Pricing for these systems starts at $375. For more info click here, call 763-745-2255 or click on the logo above.
MAC 2-1
MAC 2-2 
#804-0103 - 2-1 black headers w/chrome muffler ($179); #421-0401 - 2-1 chrome (`$199); #904-0103 - black ceramic is not available; #004-0133 - 2-2 chrome ($209); #004-0121 2-2 chrome with tapered tip ($209); #004-0113 - slip-on megaphones ($144/pair); #401-2221 - slip on tapered tip
Bub makes 4 systems for the XS650 twin available in Chrome or Black
2-2 System (14-1004), or with Contis ( 14-1010)
Chrome - $575US; Black - $555US
2-1 System - Standard (14-1005), and Special (14-1006)
C - $475US; B - $454US
A recent announcement from Bub indicates that these systems are no longer available
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USA