2026 KPMI Full Catalog V1 - Flipbook - Page 125
HONDA VARIOUS 250-300'S 2011-2022
®
CBF 300N 2019-'22
CBR 250R 2011-’13
•
•
•
•
CBR 300R 2015-’22
CB 300F 2016-’18
•
CB 300R 2019-’22
CMX 300 2017-’22
CRF 250L / RL 2013-’20
HONDA
•
•
Valve Spring Kit • Lightweight Racing
KPMI P/N
Type
Max Valve Lift* Installed Height
Seat Pressure Open Pressure
@ Lift
Intake
30-33650
.390"
1.190"
49#
160#
.390"
Exhaust
Kit Includes
4
CrSi Valve Springs
4
Titanium Retainers
4
H. T. Steel Basewashers
* It may be necessary to use KPMI® Shortened Valve Guides # 30-3367X, to achieve higher than stock lift.
Valves • Black Diamond™ • Black Nitroneg Stems
Stem Diameter
Tulip
O. L.
Remarks
1.181"
0.1766"
20º
3.280"
Standard
32.00mm
1.260"
0.1766"
20º
3.280"
Oversize
24.00mm
0.945"
0.1761"
20º
3.280"
Standard
KPMI P/N
Type
Head Diameter
30-33662
Intake
30.00mm
30-33664
Intake
30-33666
Exhaust
Valve Guides • C630 Bronze
A
B
C
D
E
F
0.505"
0.530"
0.640"
0.940"
0.390"
G
Intake
Exhaust
30-33670
0.1761" 0.3566" / Std.
+0.001”
30-33671
+0.002”
30-33672
+0.010”
30-33679
Valve Guide Seals • Viton®
Stem Diameter
4.5mm
O.L
0.331"
Seal O.D.
Seal Style
0.370"
Designed for these guide specs
4
Type
A
B
C
D
0.321”±0.005”
Part Number
0.281"
0.120"
0.240”
71014-4
71014-8
71014-16
71014-50
71014-100
Exhaust
Quantity
Quantity Discount
Pkg. of 4
0%
Pkg. of 8
0%
Pkg. of 16
Less- 10%
Pkg. of 50
Less- 15%
Pkg. of 100
Less- 20%
HONDA CRF 250R / RX 2018-2021
®
™
Valve Spring Kit • Lightweight Racing
KPMI P/N
Seat Pressure Open Pressure
Type
Max Valve Lift
Installed Height
@ Lift
Intake
.435"
1.295"
70#
209#
.435”
Exhaust
.400”
1.290"
60#
162#
.400”
30-33600
2 In CrSi Valve Springs 2 In Titanium Retainers 2 In H. T. Steel Basewashers
2 Ex CrSi Valve Springs 2 Ex Titanium Retainers 2 Ex H. T. Steel Basewashers
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107
Kit Includes
