2026 KPMI Full Catalog V1 - Flipbook - Page 105
HD M8 (& CVO’s) 2017-2025
®
™
Valve Spring Kit • Lightweight Racing
KPMI P/N
20-23800
Type
Max Valve Lift Installed Height
Intake
.630”
Exhaust
KPMI P/N
20-23850
Type
1.555"
8
8
8
Kit Includes
101#
.630”
Exhaust
Seat Pressure Open Pressure
1.555"
8
8
8
Kit Includes
317#
@ Lift
.630”
Titanium Retainers
8
CrSi Valve Springs
H. T. Steel Basewashers
8
*Red Viton® Seals
H. T. Steel Keeper (9º)
Max Valve Lift Installed Height
Intake
Seat Pressure Open Pressure
101#
317#
Harley-DaviDson
2023-2025 CVO’s check valve lift to determine compatibility with KPMI spring kits
@ Lift
.630”
H. T. Steel Retainers
8
CrSi Valve Springs
H. T. Steel Basewashers
8
*Red Viton® Seals
H. T. Steel Keeper (9º)
IMPORTANT NOTES:
Shortened Guides: the system must be run with KPMI’s new shortened Milwaukee-8 valves guides, or with modi昀椀ed stock guides (see installation instructions for more details)
Engine Kit with Lightweight Racing Valve Spring Kit
KPMI P/N
20-23350
Type
Max Valve Lift Installed Height Seat Pressure Open Pressure
Intake
.465”
Exhaust
Kit Includes
1.410"
80#
@ Lift
212#
.465”
8
In / Ex H. T. Steel Retainers
8
In / Ex H.T. Steel Keeprs Pr.
8
In / Ex CrSi Valve Springs
8
In / Ex H. T. Steel Basewashers
8
In/ Ex Red Viton® Seals
4 In Std. White Diamond® Valves 4
Ex Std. White Diamond® Valves
Components • Replacement • Engine Kit
KPMI P/N
Description
Speci昀椀cation
20-21050
20-21012H
20-21016H
Spring Kit
Includes: H. T. Steel Retainers, CrSi Valve Springs, H.T. Steel Basewashers, H.T. Steel Keeprs, Red Viton® Seals
Intake, Standard Valve
Valve • White Diamond® • Hard Chrome
Exhaust, Standard Valve
Valve • White Diamond® • Hard Chrome
Valve Kit • White Diamond® • EV8
KPMI P/N
Type
Head Diameter
Stem
Diameter
Tulip
Radius
Angle
O. L.
Remarks
Intake
1.571"
39.90mm
0.2347”
R0.235
10°
4.015”
Standard
Exhaust
1.264"
32.11mm
0.2342”
R0.460
24°
4.050”
Standard
4
In Std. White Diamond® Valves
20-23300
Kit Includes
4
Ex Std. White Diamond® Valves
Blank Valves • Tensilite® • Titanium
KPMI P/N
Type
Head Diameter
Stem
Diameter
Tulip
Radius Angle
O. L.
20-21019T
Intake
1.732”
44.00mm
0.2347”
R.235
15°
5.000” +4.00mm
O/S
20-21061T
Intake
1.654"
42.00mm
0.2347”
R.235
15°
4.750" +2.00mm
O/S
20-21018T Exhaust 1.417”
36.00mm
0.2342”
R.395
20°
5.000” +4.00mm
O/S
20-21063T Exhaust 1.339”
34.00mm
0.2342”
R.395
20°
4.750" +2.00mm
O/S
Remarks
87
Must use KPMI® Rocker-shim spring kits, lash caps or other hard tip solution for rocker-tip contact.
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