Carlisle Ultimax 3 has evolved into Ultimax PRO. Thicker cross section so more surface area is in contact with clutch. New cog design dissipates heat and aids flexibility Runs cooler for better performance. Run cool, run long & run fast with Ultimax PROAdditonal Fitment:1993-1993 YAMAHA EXCITER II SC1992-1993 YAMAHA VENTURE GT2008-2011 YAMAHA VIKING PROFESSIONAL2008-2010 YAMAHA PHAZER RTX1994-1994 YAMAHA VMAX 500 ST1996-1996 YAMAHA PHAZER MOUNTAIN LITE II ST1997-1998 YAMAHA PHAZER SS2010-2010 YAMAHA RE VIKING PROFESSIONAL1993-1993 YAMAHA EXCITER II ST1992-1993 YAMAHA PHAZER II ST1991-1992 YAMAHA EXCITER II2000-2000 YAMAHA VK 540 lll1992-1996 YAMAHA VENTURE LT1997-1998 YAMAHA VMAX 500 XTC1994-1995 YAMAHA PHAZER LE1999-1999 YAMAHA PHAZER 5001997-2007 YAMAHA PHAZER MOUNTAIN LITE2007-2007 YAMAHA PHAZER FX1999-2001 YAMAHA VMAX 500 DELUXE1994-1994 YAMAHA VMAX 600 DX2009-2011 YAMAHA VENTURE MULTI-PURPOSE2011-2011 YAMAHA PHAZER M-TX1993-2011 YAMAHA VK5401997-1997 YAMAHA VMAX 700 SX1991-1993 YAMAHA EXCITER II LE1994-1994 YAMAHA VMAX 500 DX2009-2010 YAMAHA PHAZER MTX 2008-2011 YAMAHA VENTURE LITE1997-1998 YAMAHA PHAZER SS ELECTRIC2001-2001 YAMAHA SX 500 R2011-2011 YAMAHA PHAZER R-TX2000-2000 YAMAHA SX 500R1992-2000 YAMAHA VENTURE XL1997-1998 YAMAHA VMAX 500 XT1994-1994 YAMAHA VMAX 600 LE2007-2009 YAMAHA PHAZER 1998-1998 YAMAHA VMAX 500 XTC DELUXE1999-2005 YAMAHA VK 540 III1994-1995 YAMAHA PHAZER ST1992-1996 YAMAHA PHAZER II LE1998-1998 YAMAHA VENTURE TR ELECTRIC1997-2001 YAMAHA VENTURE 5001999-1999 YAMAHA VMAX 500 SX1996-1997 YAMAHA VENTURE TR1997-1998 YAMAHA VK540 II1994-1994 YAMAHA VMAX 600 ST1994-1994 YAMAHA VMAX 500 LE2007-2011 YAMAHA PHAZER GT1994-1995 YAMAHA PHAZER II2008-2008 YAMAHA PHAZER MTX MOUNTAIN1999-1999 Y