ALL BALLS 79-5003 CHAIN ROLLER BLACK KTM EXC 125 200 250 300 400 450 520 525 You are purchasing: All Balls KTM Chain Roller - Black (79-5003) Suits: KTM (Upper / Lower) 125 EXC Years 1993-2005 200 EXC Years 1998-2005 250 EXC 2T Years 1994-2002 250 EXC 4T Years 2002 300 EXC Years 1994-2002 360 EXC Years 1996-1997 380 EXC Years 1998-2002 400 EXC Years 2000-2002 520 EXC Years 2000-2002 (Upper only) 125 EXC Years 2006-2008 200 EXC Years 2006-2007 250 EXC 2T Years 2003-2007 250 EXC 4T Years 2003-2007 300 EXC Years 2003-2007 450 EXC Years 2003 525 EXC Years 2003-2007 Specifications: Designed as a direct replacement for the OEM design. 34mm and 38mm rollers feature an outer mechanical seal to protect the bearings from dirt and water and include mounting hardware.