2026 KPMI Full Catalog V1 - Flipbook - Page 119
HONDA CRF 250R 2004-'07 / 250X 2004-'17
®
™
Stem Diameter
Tulip
O. L.
Remarks
1.220"
0.1961"
20º
3.280"
Standard
1.024"
0.1956"
20º
3.235"
Standard
KPMI P/N
Type
Head Diameter
30-30630
Intake
31.00mm
30-30633
Exhaust
26.00mm
HONDA
Valves • Black Diamond™ • Black Nitroneg Stems
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
30-30630T
Intake
31.00mm
1.220"
0.1960"
20º
3.275"
Titanium
14711-KRN-670
30-30633
Exhaust 26.00mm
1.024"
0.1956"
20º
3.235"
Stainless
14721-KRN-670
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 find 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.
Keeper Set • O.E.M. Replacement
“B”
KPMI P/N
Style
A
B
C
D
E
Quantity
Rep.
OEM P/N
51025-4
Single
Radius Bead
0.196"
7.0º
0.170"
0.205”
0.236”
4Pr.
14781-MAT-000
“D”
“C”
A
E
Note : The bead height is referenced from the minor diameter of the keeper to the center of the bead.
Valve Guides • C674 Bronze
A
B
C
D
E
F
0.540"
0.540"
0.710"
0.770"
0.394"
G
0.1961" 0.3965" / Std.
+0.010”
0.740"
0.740"
0.675"
0.775"
0.394"
Intake
Exhaust
30-30610
30-30619
30-30620
0.1956" 0.3965" / Std.
30-30629
+0.010”
Valve Guide Seals • Viton®
O.L
Seal O.D.
Seal Style
4.5mm
0.331"
0.370"
4
Designed for these guide specs
Type
A
B
C
D
Intake
0.321”±0.005”
0.281"
0.120"
0.240”
Exhaust
Part Number
Quantity
Quantity Discount
71014-4
71014-8
71014-16
71014-50
71014-100
Pkg. of 4
0%
Pkg. of 8
0%
Pkg. of 16
Less- 10%
Pkg. of 50
Less- 15%
Pkg. of 100
Less- 20%
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101
Stem Diameter
