2026 KPMI Full Catalog V1 - Flipbook - Page 306
YAMAHA YZ 450F 2010-2013
®
™
YAMAHA
Valve Guide Seals • Viton®
Stem Diameter
5.5mm
O.L
Seal O.D.
0.333"
Seal Style
0.455"
Designed for these guide specs
2
Type
A
B
C
D
Intake
0.365”±0.002”
0.325”
0.120”
0.235”
Exhaust
Part Number
Quantity
Quantity Discount
71040-4
71040-8
71040-16
71040-50
71040-100
Pkg. of 4
0%
Pkg. of 8
0%
Pkg. of 16
Less- 10%
Pkg. of 50
Less- 15%
Pkg. of 100
Less- 20%
YAMAHA VARIOUS YZ / WR 450's 2014-'21
®
•
YZ™ 450F 2014-'19
™
™
YZ™ 450FX 2016-'20
•
WR™ 450F 2016-'21
•
Valve Spring Kit • Lightweight Racing
KPMI P/N
80-80750
Type
Max Valve Lift Installed Height
Seat Pressure
Open Pressure
@ Lift
Intake
.450”
1.185"
46#
155#
.450"
Exhaust
.450”
1.185"
46#
155#
.450"
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
Kit Includes
The use of KPMI® guides(#80-8077X and #80-8078X) may be necessary when using higher than stock lift cams.
Cylinder Head Service Kit
KPMI P/N
80-82070
Type
Max Valve Lift Installed Height Seat Pressure
Open Pressure
@ Lift
Intake
.450”
1.185”
46#
155#
.450”
Exhaust
.450”
1.185”
46#
155#
.450”
Kit Includes
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. C630 Valves Guides
2
Ex Std. C630 Valve Guides
1
Top End Gasket Kit
Components • Replacement • Cylinder Head Service Kit
KPMI P/N
Speci昀椀cation
Description
80-80750
Spring Kit
80-80872
Intake, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
80-80876
Exhaust, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
80-80770
Intake, Standard Valve Guide
Valve Guide • C630 Bronze
80-80780
Exhaust, Standard Valve Guide
Valve Guide • C630 Bronze
80-82071
Gasket Kit
288
order 650-557-2046
Includes: Ti Retainers, CrSi Valve Springs, H.T. Steel Basewashers
Includes: Head Gasket 97mm (1), Valve Stem Seals (4), Base Gasket (1), Cam Chain Tensioner Gasket (1),
Exhaust Gasket (1)
