ORO2U Dirt Catalogue - Section E - Engine and Performance.

Vertex & Wiseco

Engine Valves

Intake

Exhaust

KAWASAKI

Models KX 250F KX 250F KX 250F KLX 400 KX 450F KX 450F

Years

Type of Valve

Intake Valve Valve Size (mm)

Exhaust Valve Valve Size (mm)

2004 - 08 2009 - 15 2020 - 22 2003 - 04 2006 - 08 2009 - 15

Titanium Titanium Titanium

65-429.WI.TI 65-448.WI.TI 65-5123.VE.TI 65-153.IN.WI 65-437.WI.TI

79mm

65-428.WI.TI 65-428.WI.TI 65-5122.VE.TI 65-153.EX.WI 65-436.WI.TI 65-453.VE.TI

79mm 79mm

78.2mm

Stainless Steel

36mm 82mm

29mm

Titanium Titanium

83.3mm 76.95mm

Intake

Exhaust

KTM

Models 250 SX-F 250 SX-F 250 EXC-F 250 EXC-F

Years

Type of Valve

Intake Valve Valve Size (mm)

Exhaust Valve Valve Size (mm)

2006 - 12 2013 - 15 2007 - 13 2014 - 15

Titanium Titanium Titanium Titanium Titanium Titanium Titanium Titanium Titanium

65-441.WI.TI 65-5003.WI.TI 65-441.WI.TI 65-5003.WI.TI 65-441.WI.TI 65-5004.WI.TI 65-5004.WI.TI 65-5121.VE.TI 65-5004.WI.TI 65-442.WI.SS 65-5006.WI.TI 65-442.WI.SS 65-5006.WI.TI 65-5096.VE.TI 65-442.WI.TI 65-454.VE.TI 65-5010.WI.TI 65-442.WI.TI 65-454.VE.TI 65-442.WI.SS 65-442.WI.SS 65-442.WI.SS 65-442.WI.SS

99.4mm

65-440.WI.TI 65-5002.WI.TI 65-440.WI.TI 65-5002.WI.TI 65-440.WI.TI 65-5005.WI.TI 65-5005.WI.TI 65-5120.VE.TI 65-5005.WI.TI 65-443.WI.SS 65-5007.WI.SS 65-443.WI.SS 65-5007.WI.SS 65-5098.VE.SS 65-443.WI.TI 65-455.VE.TI 65-5011.WI.TI 65-443.WI.TI 65-455.VE.TI 65-443.WI.SS 65-443.WI.SS 65-443.WI.SS 65-443.WI.SS

92.9mm

99.4mm

92.9mm

250 XC-F, XCF-W 2007 - 13

99.4mm

92.9mm

350 SX-F 350 EXC-F 350 EXC-F 350 Freeride

2011 - 15 2014 - 15 2020 - 23 2012 - 14 1999 - 07 2009 - 11 2003 - 07

400 EXC 400 EXC

Stainless Steel Titanium/S.Steel Stainless Steel Titanium/S.Steel Titanium/S.Steel

450 EXC-R

450 EXC/EXC-R 2008 - 15

2020 - 23 2003 - 06 2007 - 10 2013 - 15 2003 - 07 2007 - 08 2000 - 02 2003 - 06 2003 - 07

450 EXC-F

450 SX

Titanium Titanium Titanium Titanium Titanium

97mm 88mm

97mm

450 SX-F 450 SX-F

89.60mm

450 EXC/MXC

97mm 88mm

97mm

505 SX-F

89.60mm

520 SX/EXC

Stainless Steel Stainless Steel Stainless Steel Stainless Steel

525 SX

525 EXC, MXC

525 XC & XC-W 2003 - 07

Intake

Exhaust

SUZUKI

Models RM-Z 250 RM-Z 250 RM-Z 250 RM-Z 250

Years

Type of Valve

Intake Valve Valve Size (mm)

Exhaust Valve Valve Size (mm)

2004 - 06 2007 - 09 2010 - 15 2016 - 23 2000 - 15 2005 - 06

Titanium Titanium Titanium Titanium

65-429.WI.TI 65-456.VE.TI

79mm

65-428.WI.TI 65-457.VE.TI 65-457.VE.TI 65-457.VE.TI 65-153.EX.WI 65-430.WI.TI 65-438.WI.TI 65-459.VE.TI 65-459.VE.TI

79mm

80.35mm

80.6mm 80.6mm 80.6mm

DRZ 400/E/S

Stainless Steel

65-153.IN.WI 65-431.WI.TI 65-439.WI.TI 65-458.VE.TI 65-458.VE.TI

36mm

29mm

RM-Z 450 RM-Z 450 RM-Z 450 RMX 450Z

Titanium Titanium Titanium Titanium

82.4mm 82.4mm

81.3mm 81.3mm 80.9mm 80.9mm

2007

2008 - 23 2010 - 11

82mm 82mm

Intake

Exhaust

YAMAHA

Models

Years

Type of Valve Titanium Intake Titanium Center

Intake Valve Valve Size (mm)

Exhaust Valve Valve Size (mm)

65-423.WI.TI 65-424.WI.TI 65-5015.WI.TI 65-5099.VE.TI 65-5015.WI.TI 65-5015.WI.TI 65-426.WI.TI 65-427.WI.TI 65-426.WI.TI 65-427.WI.TI 65-464.WI.TI 65-6314.WI.TI 65-5125.VE.TI

80mm

YZ/WR 250F

2001 - 13

65-422.TI.WI

77.9mm

78.6mm

WR 250F WR 250F YZ 250F YZ 250FX

2015

Titanium Titanium Titanium Titanium

65-5014.WI.TI

2020 - 21 2014 - 15

65-5014.WI.TI 65-5014.WI.TI

2015

Titanium Intake Titanium Center Titanium Intake Titanium Center

77mm 76mm 77mm 76mm

WR 450F

2003 - 15

65-425.WI.TI

70mm

YZ 450F

2003 - 09

65-425.WI.TI

70mm

YZ 450F YZ 450F YZ 450F

2010 - 13 2014 - 15 2020 - 22

Titanium Titanium Titanium

83.90mm

65-465.WI.TI 65-6313.WI.TI 65-5124.VE.TI

86mm

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