2026 KPMI Full Catalog V1 - Flipbook - Page 143
HONDA CRF 450R 2009-2012
®
™
Type
Max Valve Lift
Installed Height
Seat Pressure
Open Pressure
@ Lift
Intake
.440"
1.215"
40#
147#
.440"
Exhaust
.440"
1.365"
71#
203#
.440"
KPMI P/N
HONDA
Valve Spring Kit • Lightweight Racing
30-31250
Kit Includes
2
In CrSi Valve Springs
2
In Titanium Retainers 2 In H.T. Steel Basewashers
2
*Ex CrSi Valve Springs 2
In Titanium Retainers 2 Ex H.T. Steel Basewashers
*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.
Intake Only • Steel Valve Conversion Kit
KPMI P/N
Type
Max Valve Lift
Installed Height
30-31240
Intake
.440"
1.215"
2
Kit Includes
Seat Pressure Open Pressure
40#
CrSi Valve Springs
Black Diamond™ Valves
2
147#
@ Lift
.440"
2
Titanium Retainers
2
H. T. Steel Basewashers
Valves • Black Diamond™ • Black Nitroneg Stems
Stem Diameter
Tulip
O. L.
Remarks
1.417"
0.1960"
20º
3.095"
Standard
30.00mm
1.181"
0.1955"
20º
3.175"
Standard
31.00mm
1.220"
0.1955"
20º
3.185"
Oversize
KPMI P/N
Type
Head Diameter
30-31262
Intake
36.00mm
30-31266
Exhaust
30-31267
Exhaust
Must use Kibblewhite® Lightweight Valve Spring Kits when installing Black Diamond™ Valves.
Valves • O.E.M. Replacement • Titanium • Stainless
KPMI P/N
Type
Head Diameter
Stem
Diameter Tulip
O. L.
Material
Rep. OEM P/N
30-31262T
Intake
36.00mm
1.417"
0.1960"
20º
3.095"
Titanium
14711-MEN-A30
30-31266
Exhaust 30.00mm
1.181"
0.1955"
20º
3.175"
Stainless
14721-MEN-A30
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.
Valve Guides • C630 Bronze
B
C
D
E
F
G
Intake
0.535"
0.535"
0.590”
0.670"
0.433"
0.1960'
0.4360" / Std.
30-31270
+0.001”
30-31271
+0.002”
30-31272
+0.010”
30-31279
0.630"
0.630"
0.730”
0.870"
0.433"
0.1955" 0.4360" / Std.
Exhaust
30-31280
+0.001”
30-31281
+0.002”
30-31282
+0.010”
30-31289
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