Feature●Fits: Honda TRX400EX TRX 400EX (1999-2015), XR400 (1996-2004), NX400 Falcon (1999-2007)●OEM Replacement●This product is tested to Exceed Original Equipment Standards and Performance●This kit includes: Rocker Arms (4), Rocker Arm Shafts (4), Intake Valves (2), Exhaust Valves (2), Inner Valve Springs (4) Outer Valve Springs (4), Intake Valve Spring Seats (2), Exhaust Valve Spring Seats (2), Valve Keepers (8) Sub Rocker Arms (4), Sub Rocker Arms Shaft (4), Springs and Clips as pictured●THIS ITEM HAS TO BE INSTALLED BY PROFESSIONAL MECHANICS SPECIALIZED IN ATV AND UTVsDescription