2026 KPMI Full Catalog V1 - Flipbook - Page 298
YAMAHA YZ 250F 2019-'26 / WR 250F & YZ 250FX 2020-'26
®
™
™
™
YAMAHA
Valve Guides • C674 Bronze • Intake Guide Excludes YZ 250F 2021-'26 & WR / FX 2022-'26
A
B
C
D
E
F
0.435”
0.470"
0.415"
0.745"
0.430"
G
Intake
80-82320
0.1962" 0.3957" / Std.
80-82329
+0.010”
0.330”
0.365"
0.590"
0.815"
0.391"
Exhaust
80-82330
0.1760" 0.3563" / Std.
80-82339
+0.010”
Valve Guide Seal Kits • High Performance
Designed for these guide specs
Intake Stem
Diameter
O.L
Seal
O.D.
Seal
Style
A
5.0mm
Exhaust
Stem
Diameter
4.5mm
0.350"
0.405"
4
0.340”±0.005”
C
D
0.303”
0.125”
0.230”
Designed for these guide specs
O.L
Seal
O.D.
Seal
Style
A
B
C
D
0.331"
0.370"
4
0.321”±0.002”
0.281”
0.120”
0.240”
80-82345
Part Number
B
Kit Includes
Intake Viton® Seals
2
Exhaust Viton® Seals
2
YAMAHA YFM 350-450 1987-2021
®
•
•
•
BIG BEAR™ 350 1987-'99
GRIZZLY™ 350 2007-'14
RAPTOR™ 350 2004-'13
™
•
•
•
•
•
WARRIOR™ 350 1987-'04
WOLVERINE™ 350 1995-'09
BIG BEAR™ 400 2000-'12
KODIAK™ 400 1987-'06
KODIAK™ 450 2018-'21
Valve Spring Kit • Lightweight Racing
KPMI P/N
Type
Max Valve Lift Installed Height
Intake
80-8000
.475”
Exhaust
Kit Includes
Seat Pressure
Open Pressure
@ Lift
97#
266#
.475”
1.325"
2
Titanium Retainers
2
H. T. Steel Keepers Pr.
2
CrSi Valve Springs
2
H. T. Steel Basewashers
Valves • Black Diamond™ • Black Nitroneg Stems
KPMI P/N
Type
Head Diameter
Stem Diameter
Tulip
O. L.
Remarks
80-80012
Intake
40.00mm
1.575"
0.2750"
23º
4.020"
Standard
80-80014
Exhaust
34.00mm
1.339"
0.2745"
29º
3.945”
Standard
Valve Guides • C674 Bronze
A
B
C
D
E
0.475”
0.515"
1.100"
1.290"
0.520"
F
G
0.2750" 0.4942" / Std.
+0.010”
280
Use O.E.M. valve guide seal.
ORDER 650-557-2046
Intake
Exhaust
80-8010
80-8020
