2026 KPMI Full Catalog V1 - Flipbook - Page 314
YAMAHA YXZ 1000R 2016-2025
®
YAMAHA
Cylinder Head Service Kit
KPMI P/N
Type
Max Valve Lift Installed Height Seat Pressure
Open Pressure
@ Lift
165#
.430”
Intake
80-83000
.430”
1.320”
55#
Exhaust
12 In / Ex H. T. Steel Retainers 12 In / Ex CrSi Valve Springs 12 In / Ex H. T. Steel Basewashers
6
Kit Includes
In Std. Black
Diamond™ Valves
6
Ex Std. Black
Diamond™ Valves
12 In / Ex Std. C630 Valve Guides
1
12 In / Ex Valve Stem Seals
Top End Gasket Kit
Components • Replacement • Cylinder Head Service Kit
KPMI P/N
Description
Speci昀椀cation
80-81700
Spring Kit
*71014-12
Valve Stem Seals
80-81312
Intake, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
80-81316
Exhaust, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
80-81320
80-83001
Includes: H. T. Steel Retainers, CrSi Valve Springs, H.T. Steel Basewashers
Seals • 4.5 mm • Red Viton®
Intake / Exhaust, Standard Valve Guide Valve Guide • C630 Bronze
Gasket Kit
Includes: Head Gasket 82.5mm (1), Engine Case Gasket (1), Exhaust Gasket (3), O-ring (1), Copper
Washer (1)
* NOTE: It is important to use the valve stem seals included in the KPMI® labeled bags. These valve stem seals are designed for speci昀椀c compatibility with the KPMI®
spring kit. The COMETIC® gasket kit may contain additional valve stem seals, however these should NOT be used with the KPMI® spring kit and can be discarded.
Valves • Black Diamond™ • Black Nitroneg Stems
Stem Diameter
Tulip
O. L.
Remarks
1.220"
0.1765"
15º
3.495"
Standard
32.00mm
1.260"
0.1765”
15º
3.495”
Oversize
Exhaust
26.00mm
1.024"
0.1760"
25º
3.470"
Standard
Exhaust
27.00mm
1.063"
0.1760”
25º
3.470”
Oversize
Stem Diameter
Tulip
O. L.
Remarks
0.1760"
25º
3.465”
Standard
KPMI P/N
Type
Head Diameter
80-81312
Intake
31.00mm
80-81313
Intake
80-81316
80-81317
Valve • White Diamond® • Inconel® • Exhaust
KPMI P/N
Type
Head Diameter
80-81316K
Exhaust
26.00mm
1.024"
** Inconel® is classi昀椀ed as a “Super Alloy”, meaning that it is designed to survive under the most extreme temperatures and pressures where other valves will
begin to burn, corrode, or completely fail. This is the material of choice for high output engines running turbos, superchargers, nitromethane, or nitrous.
Valve Guides • C630 Bronze
296
order 650-557-2046
A
B
C
D
E
0.530”
0.530”
0.585"
0.750"
0.354"
F
G
0.1760" 0.3564" / Std.
Intake
Exhaust
80-81320
+0.001”
80-81321
+0.002”
80-81322
+0.004”
80-81324
+0.010”
80-81329
