2026 KPMI Full Catalog V1 - Flipbook - Page 54
HD SHOVELHEAD 74" 1966-1977
®
™
HARLEY-DAVIDSON
Valve Spring Kit • O. E. M. Replacement
Kit Includes
KPMI P/N
Type
H. T. Steel
Retainers
H. T. Steel
Keepers Pr.
CrSi Valve
Springs
Intake
4 20-20436 4 20-20439
Exhaust
Installed Height
Seat Pressure
20-20435
Max Valve Lift
.415”
1.375"
H. T. Steel
Basewashers
20-20437
4
20-20438
4
Open Pressure
@ Lift
272#
.415"
129#
All KPMI® retainers are designed using the latest CAD software available. Further, the retainers are tested using 昀椀nite element analysis (FEA) to ensure the retainer
can endure high stress levels during operation. By using billet aircraft alloy material, heat treating it, and then employing our high powered design software, KPMI®
is able to maximize weight saving by incorporating a series of drilled holes in the retainers. These retainers are both strong and light, allowing signi昀椀cant reduction
to overall valvetrain mass, which is known to improve performance. All components are the quality you can expect from KPMI®, manufactured to exact O.E.M.
dimensions. These O.E.M. replacements parts may be purchased separately using the above part numbers.
Engine Kit with O. E. M. Replacement Spring Kit
KPMI P/N
20-22450
Type
Max Valve Lift Installed Height Seat Pressure Open Pressure
Intake
.415”
Exhaust
Kit Includes
1.375"
129#
272#
@ Lift
.415”
4
In / Ex H. T. Steel Retainers
4
In / Ex H.T. Steel Keeprs Pr.
4
In / Ex CrSi Valve Springs
4
In / Ex H. T. Steel Basewashers
In/ Ex Red Viton® Seals
4
In Std. Black Diamond™ Valves
2
Ex Std. Black Diamond™ Valves
2
Components • Replacement • Engine Kit
KPMI P/N
Description
20-20435
71011-4
20-4194
20-4195
Spring Kit, OEM Replacement
Intake / Exhaust Seal
Speci昀椀cation
Includes: H. T. Steel Retainers, CrSi Valve Springs, H.T. Steel Basewashers, H.T. Steel Keeprs
Seal • Red Viton®
Intake, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
Exhaust, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
Valve Kit • Black Diamond™ • Black Nitroneg Stems
KPMI P/N
20-22400
Type
Head Diameter
Tulip
Stem
Diameter
Radius
Angle
O. L.
Remarks
Intake
1.950"
49.53mm
0.3765"
R0.234
23°
3.885”
Standard
Exhaust
1.750”
44.45mm
0.3760"
R0.234
29°
3.810"
Standard
Kit Includes
2
In Std. Black Diamond™ Valves
Ex Std. Black Diamond™ Valves
2
Valves • Black Diamond™ • Black Nitroneg Stems
KPMI P/N
Type
Head Diameter
Intake 1.950"
20-4194
Intake 2.000"
20-4256
20-4195 Exhaust 1.750”
20-4195S Exhaust 1.780"
20-4195-1 Exhaust 1.8120"
49.53mm
50.80mm
44.45mm
45.21mm
46.02mm
Stem
Diameter
0.3765"
0.3765"
0.3760"
0.3760"
0.3760"
Tulip
Radius
Angle
R0.234
23°
R0.234
23°
R0.234
29°
R0.234
29°
R0.234
29°
O. L.
Remarks
3.885”
3.885”
3.810"
3.820"
3.820"
OEM18078-80
O. L.
Remarks
Oversize
OEM18082-57
Oversize
Oversize
Black Diamond™ Valves • Fat Stem • Black Nitroneg Stems
KPMI P/N
36
order 650-557-2046
Type
Head Diameter
Tulip
Stem
Diameter
Radius
Angle
20-4294
Intake
1.950"
49.53mm
0.3780"
R0.234
23°
3.885”
OEM18075-8
20-4295
Exhaust
1.750”
44.45mm
0.3775"
R0.234
29°
3.810"
Standard
