2026 KPMI Full Catalog V1 - Flipbook - Page 320
YAMAHA VARIOUS 1049cc TRIPLES 2008-'15
®
YAMAHA
•
FX NYTRO™ 2008-2014
•
SRVIPER™ 2014-2015
Valve Spring Kit • Lightweight Racing
KPMI P/N
Type
Max Valve Lift Installed Height
Seat Pressure
Open Pressure
@ Lift
53#
167#
.445”
Intake
80-80450
.445”
Kit Includes
KPMI P/N
1.300"
Exhaust
12
Type
Titanium Retainers
12
CrSi Valve Springs
Max Valve Lift Installed Height
12
H. T. Steel Basewashers
Seat Pressure
Open Pressure
@ Lift
53#
167#
.445”
Intake
80-81800
.445”
1.300"
Exhaust
Kit Includes
12
H. T. Steel Retainers
12
CrSi Valve Springs
12
H. T. Steel Basewashers
It may be necessary to use KPMI® Shortened Valve Guides # 80-80470, to achieve higher than stock lift.
Valve Spring Kit • "Shim in Tappet" Lightweight Racing
KPMI P/N
Type
80-81850
Intake
Exhaust
Max Valve Lift Installed Height
.445”
12
12
Kit Includes
Shim In Tappet (SIT)
KPMI P/N
Type
80-82550
Intake
Exhaust
Seat Pressure
Open Pressure
@ Lift
53#
167#
.445”
1.300”
Titanium Retainers
H. T. Steel Basewashers
Max Valve Lift Installed Height
.445”
12
12
CrSi Valve Springs
H. T. Steel Tappets
Seat Pressure
Open Pressure
@ Lift
53#
167#
.445”
1.300”
12
H.T. Steel Retainers
12
CrSi Valve Springs
12
H. T. Steel Basewashers
12
H. T. Steel Tappets
KPMI® shim in tappet systems locate the adjustment shim in the hardened steel of the tappet body, where it is impervious to wearing (ovalling) and kicking the
shim out. By designing the tappet and retainer together as a system, the shim counterbore depth in the tappet has been maximized. This allows for increased
insurance against losing the shim even in the event of valvetrain separation during severe operating conditions, over-revs, or extreme boost pressures. It may be
necessary to use KPMI® Shortened Valve Guides # 80-80470, to achieve higher than stock lift.
Kit Includes
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
80-80462
Intake
31.00mm
80-80463
Intake
80-80466
80-80467
Valve • White Diamond® • Inconel® • Exhaust
KPMI P/N
Type
Head Diameter
80-80466K
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.
302
order 650-557-2046
