2003-2009 Yamaha YZ450F
PART NUMBER ITEM DESCRIPTION NOTES   QTY   RETAIL  
Valves          
XIVM43000 INTAKE VALVE - CENTER CENTER - VALVE STD HEAD DIAMETER, 4.5MM STEM EACH $179.78
XIVM43002 INTAKE VALVE - CENTER CENTER - (+1MM) DIAMETER - 4.5MM STEM - USE (+1MM) SEAT EACH $179.78
XIVM43003 INTAKE VALVE - CENTER CENTER - (+2MM) DIAMETER - 4.5MM STEM - USE (+2MM) SEAT EACH $179.78
XIVM43001 INTAKE VALVE - OUTER OUTER - VALVE STD HEAD DIAMETER, 4.5MM STEM EACH $179.78
XIVM43004 INTAKE VALVE - OUTER OUTER - (+1MM) DIAMETER - 4.5MM STEM - USE (+1MM) SEAT EACH $179.78
XIVM43005 INTAKE VALVE - OUTER OUTER - (+2MM) DIAMETER - 4.5MM STEM - USE (+2MM) SEAT EACH $179.78
XEVM43000 EXHAUST VALVE  VALVE STD HEAD DIAMETER, 5MM STEM EACH $179.78
XEVM43001 EXHAUST VALVE  (+1MM) HEAD DIAMETER, 5MM STEM - USE (+1MM) SEAT EACH $179.78
XEVM43003 EXHAUST VALVE (+2MM) HEAD DIAMETER, 5MM STEM - USE (+2MM) SEAT EACH $179.78
Guides          
CVGM43000 INTAKE GUIDE DIRECT REPLACEMENT, SIZING REQUIRED 3 $69.96
CVGM43001 EXHAUST GUIDE DIRECT REPLACEMENT, SIZING REQUIRED 2 $46.64
Intake Seats          
XISM1110-280-A25 STD INTAKE SEAT BERYLLIUM COPPER SEAT - .915 ID 3 $98.64
XISM1120-280-A25 (+.010") INTAKE SEAT BERYLLIUM COPPER SEAT - .915 ID 3 $98.64
XISM1150-280-A25 (+1MM) INTAKE SEAT BERYLLIUM COPPER SEAT - .955 ID 3 $84.60
XISM1190-280-A25 (+2MM) INTAKE SEAT BERYLLIUM COPPER SEAT - .955 ID 3 $84.60
Exhaust Seats          
XESM1189-315-A25 STD EXHAUST SEAT BERYLLIUM COPPER SEAT - .975 ID 2 $56.40
XESM1199-315-A25 (+.010") EXHAUST SEAT BERYLLIUM COPPER SEAT - .975 ID 2 $56.40
XESM1230-315-A25 (+1MM) EXHAUST SEAT BERYLLIUM COPPER SEAT - 1.015 ID 2 $56.40
XESM1270-315-A25 (+2MM) EXHAUST SEAT BERYLLIUM COPPER SEAT - 1.015 ID 2 $56.40
Retainers          
XREM43000 INTAKE RETAINER TI-17, FITS OEM SPRING 3 $104.10
XREM43001 EXHAUST RETAINER TI-17, FITS OEM SPRING 2 $69.40
Valve Locks          
XLOM45650Y INTAKE VALVE LOCK MACHINED VALVE LOCKS 3 PAIR $33.06
XLOM50753 EXHAUST VALVE LOCK MACHINED VALVE LOCKS 2 PAIR $22.04
Valve Stem Seals          
CVMSEA43000 VALVE SEAL KIT IN & EX INTAKE AND EXHAUST VALVE SEALS 5 $16.75
CVVSVSY1-4SV INDIVIDUAL INTAKE SEAL 4.5MM INDIVIDUAL INTAKE SEAL EACH $3.35
CVVS701M INDIVIDUAL EXHAUST SEAL 5MM INDIVIDUAL EXHAUST SEAL EACH $3.35
Valve Springs          
CVVSK43000 SPRING KIT SPRINGS - SPRING SEATS KT $217.01
PSIMX2004 INTAKE & EXHAUST SPRINGS MUST USE XSSM43000 5 $160.91
Spring Seats          
XSSM43000 INTAKE & EXHAUST SPRING SEAT .100" THICK - MUST USE PSI SPRINGS 5 $56.10
Spring Shims          
CVMS12000 VALVE SPRING SHIM KIT .010 THICK - USE AS NEEDED 4 $5.80
CVMS12001 VALVE SPRING SHIM KIT .020 THICK - USE AS NEEDED 4 $5.80
CVCRF250-.25 INDIVIDUAL SPRING SHIM .010 THICK - USE AS NEEDED EACH $1.45
CVCRF250-.5 INDIVIDUAL SPRING SHIM .020 THICK - USE AS NEEDED EACH $1.45
Cam Buckets          
XBT43301 INTAKE & EXHAUST BUCKET LIGHTWEIGHT - DLC COATED - SPECIAL STEEL EACH $85.47