2026 KPMI Full Catalog V1 - Flipbook - Page 150
HONDA CRF 450X 2005-2017
®
™
HONDA
Components • Replacement • Top End Service Kit
KPMI P/N
Description
Spring Kit
Intake, Standard Valve
Exhaust, Standard Valve
Gasket Kit
30-31050
30-31062
30-31066
30-32901
Speci昀椀cation
Includes: Ti Retainers, CrSi Valve Springs, H.T. Steel Basewashers
Valves • Black Diamond™ • Black Nitroneg Stems
Valves • Black Diamond™ • Black Nitroneg Stems
Includes: Base gasket, Engine case gasket, Exhaust gasket, Head gasket, Washers, Valve stem seals
Cylinder Head Service Kit
KPMI P/N
Type
Intake
Exhaust
30-33450
Kit Includes
Max Valve Lift Installed Height Seat Pressure Open Pressure
@ Lift
.440”
1.215”
40#
147#
.440”
.440"
1.365”
70#
203#
.440”
2 In Titanium Retainers 2 In CrSi Valve Springs 2 In H. T. Steel Basewashers
2 Ex Titanium Retainers 2 *Ex CrSi Valve Springs 2 Ex H. T. Steel Basewashers
2 In Std. Black Diamond™ Valves 2
Ex Std. Black 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
KPMI P/N
30-31050
30-31062
30-31066
30-31070
30-31080
Description
Spring Kit
Intake, Standard Valve
Exhaust, Standard Valve
Intake, Standard Valve Guide
Exhaust, Standard Valve Guide
30-33451
Gasket Kit
Speci昀椀cation
Includes: Ti Retainers, CrSi Valve Springs, H.T. Steel Basewashers
Valve • Black Diamond™ • Black Nitroneg Stems
Valve • Black Diamond™ • Black Nitroneg Stems
Valve Guide • C674 Bronze
Valve Guide • C674 Bronze
Includes: Head Gasket 96mm Bore (1), Exhaust Valve Seals (2), Intake Valve Seals (2), Base Gasket
(1),Cam Chain Tensioner Gasket (1), Exhaust Gasket (1), Water Outlet O-ring (1)
Valves • Black Diamond™ • Black Nitroneg Stems
Stem Diameter
Tulip
O. L.
Remarks
1.378"
0.2158"
20º
3.315"
Standard
KPMI P/N
Type
Head Diameter
30-31062
Intake
35.00mm
30-31063
Intake
36.00mm
1.417"
0.2158"
20º
3.315"
Oversize
30-31066
Exhaust
30.00mm
1.181"
0.1957"
20º
3.310"
Standard
30-31067
Exhaust
31.00mm
1.220"
0.1957"
20º
3.310"
Oversize
Must use Kibblewhite® Lightweight Valve Spring Kits when installing Black Diamond Valves.
™
Valve Guides • C674 Bronze
A
B
C
D
E
F
0.495"
0.520"
0.650”
0.760"
0.480"
G
Intake
0.2155" 0.4360" / Std.
+0.010”
0.580"
0.605"
0.740”
0.890"
0.480"
Exhaust
30-31070
30-31079
30-31080
0.1955" 0.4360" / Std.
30-31089
+0.010”
Keeper Set • O.E.M. Replacement
“B”
KPMI P/N
Style
Type
A
B
C
D
E
Quantity
Single
Radius Bead
Intake
0.215"
7.0°
0.179"
0.214”
0.262”
2 Pr.
30-31095
Exhaust
0.196"
7.0°
0.170"
0.205”
0.236”
2 Pr.
“D”
“C”
A
E
132
Note : The bead height is referenced from the minor diameter of the keeper to the center of the bead.
*The Exhaust springs for this kit include a progressively wound Inner Spring, which should be installed with the tightly wound end seated on the H. T. Steel
Basewashers.
order 650-557-2046
