• Larger lift camshafts require valve guide machining for seal and retainer clearance
• .050″ offset 10°, 5/16″ steel valve locks, raises the valve spring retainer to gain .050″ installed high without machining the cylinder head spring seat
• Up to .574″ lift for 1984-2004 Big Twin, 1986-2003 Sportster and up to .700″ lift for 2005-17 Twin cam







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