2026 KPMI Full Catalog V1 - Flipbook - Page 178
KAWASAKI KX250F 2004-2016
®
™
KAWASAKI
Components • Replacement • Cylinder Head Service Kit for KX250F™ 2007-2008
Speci昀椀cation
KPMI P/N
Description
40-40100
40-40140H
40-40143H
40-40520
40-40120
Spring Kit
Intake, Standard Valve Guide
Valve Guide • C674 Bronze
Exhaust, Standard Valve Guide
40-41511
Gasket Kit
Valve Guide • C674 Bronze
Includes: Head Gasket 77mm, Base Gasket (1), Exhaust Gasket (1), Cam Chain Tensioner O-Ring (1), Valve
Stem Seal (4)
Includes: Ti Retainers, CrSi Valve Springs, H.T. Steel Basewashers
Intake, Standard Valve
Valves • White Diamond® • Hard Chrome Stems
Exhaust, Standard Valve
Valves • White Diamond® • Hard Chrome Stems
Cylinder Head Service Kit for KX250F™ 2009-2016
KPMI P/N
40-41520
Type
Max Valve Lift Installed Height Seat Pressure
Intake
.445”
Exhaust
1.320”
Open Pressure
@ Lift
155#
.445”
46#
4 In / Ex Titanium Retainers 4 In / Ex CrSi Valve Springs 4 In / Ex H. T. Steel Basewashers
Kit Includes
2
In Std. White Diamond® Valves
2
Ex Std. White Diamond® Valves
2
In Std. C674 Valve Guides
2
Ex Std. C674 Valve Guides
1
Top End Gasket Kit
Components • Replacement • Cylinder Head Service Kit for KX250F™ 2009-2016
Speci昀椀cation
KPMI P/N
Description
40-40100
40-40140H
40-40143H
40-40520
40-40120
Spring Kit
Intake, Standard Valve Guide
Valve Guide • C674 Bronze
Exhaust, Standard Valve Guide
40-41521
Gasket Kit
Valve Guide • C674 Bronze
Includes: Head Gasket 77mm, Base Gasket (1), Exhaust Gasket (1), Cam Chain Tensioner O-Ring (1), Valve
Stem Seal (4)
Intake, Standard Valve
Exhaust, Standard Valve
Includes: Ti Retainers, CrSi Valve Springs, H.T. Steel Basewashers
Valves • White Diamond® • Hard Chrome Stems
Valves • White Diamond® • Hard Chrome Stems
Intake Only • Steel Valve Conversion Kit
KPMI P/N
Type
Max Valve Lift
Installed Height
40-40350
Intake
.445"
1.320"
Seat Pressure Open Pressure
46#
155#
@ Lift
.445"
2
CrSi Valve Springs
2
Titanium Retainers
2
White Diamond® Valves
2
H. T. Steel Basewashers
Kit Includes
Valves • White Diamond® • Hard Chrome Stems
Stem Diameter
Tulip
O. L.
Remarks
1.220"
0.1765"
20º
3.120"
Standard
0.985"
0.1756"
25º
3.125"
Standard
KPMI P/N
Type
Head Diameter
40-40140H
Intake
31.00mm
40-40143H
Exhaust
25.00mm
Must use Kibblewhite® Lightweight Valve Spring Kits when installing White Diamond® Valves.
Valves • O.E.M. Replacement • Tensilite® • Chromium Nitride PVD Coated Titanium
KPMI P/N
Type
Head Diameter
Stem
Diameter Tulip
O. L.
Material
Rep. OEM P/N
40-40140T
Intake
31.00mm
1.220"
0.1765"
20º
3.120"
Titanium
12004-0033
40-40143T Exhaust 25.00mm 0.985"
0.1756"
25º
3.125"
Titanium
12005-0002
160
Note: These valves are intended as O.E.M. replacement valves and are completely compatible with the O.E.M. spring kits. However, experienced engine
builders, who are running aggressive camshafts or higher than factory RPM’s may 昀椀nd the combination of the O.E.M. Style Valve and KPMI’s Lightweight Racing
Spring Kits advisable. All titanium valves are (Tensilite®) PVD CrN coated, and all stainless valves are Black Diamond™ coated.
order 650-557-2046
