2026 KPMI Full Catalog V1 - Flipbook - Page 51
HD SPORTSTER 1970-1983
®
™
KPMI P/N
Type
Seat Pressure
Open Pressure
@ Lift
1.310"
158#
340#
.480"
4
H. T. Steel Retainers
4
H. T. Steel Keepers Pr.
4
CrSi Valve Springs
4
H. T. Steel Basewashers
Max Valve Lift Installed Height
Intake
20-2210
.480”
Exhaust
Kit Includes
Harley-DaviDson
Valve Spring Kit • Lightweight Racing
Longer KPMI ‘R’ model valves, 20-4167 (int.) and 20-4168(ex.) may be required to achieve correct installed height for this spring kit. Rockers should clear covers
when kit is installed correctly. Retainers manufactured from heat treated, aircraft quality, steel billet. FEA stress analysis used to incorporate unique concave radius,
and design equidistant holes to lighten retainer without sacri昀椀cing strength. Black Oxide treatment applied to resist corrosion.
Valve Spring Kit • O. E. M. Replacement
KPMI P/N
Type
H. T. Steel
Retainers
Intake
20-20440
H. T. Steel
Keepers Pr.
4 20-20441
Exhaust
Kit Includes
CrSi Valve
Springs
20-4275
4
H. T. Steel
Basewashers
20-2215
4
4
20-20085
Max Valve Lift
Installed Height
Seat Pressure
Open Pressure
@ Lift
.400”
1.245"
95#
330#
.400"
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
20-22350
Type
Max Valve Lift Installed Height Seat Pressure
Intake
.400”
Exhaust
Kit Includes
1.245"
Open Pressure
@ Lift
330#
.400"
95#
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
2
In Std. Black Diamond™ Valves
2
Ex Std. Black Diamond™ Valves
Components • Replacement • Engine Kit
Speci昀椀cation
KPMI P/N
Description
20-20440
Spring Kit, OEM Replacement
20-4196
Intake, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
20-4197
Exhaust, Standard Valve
Valve • Black Diamond™ • Black Nitroneg Stems
Includes: H. T. Steel Retainers, CrSi Valve Springs, H.T. Steel Basewashers, H.T. Steel Keeprs
Valve Kit • Black Diamond™ • Black Nitroneg Stems
20-22300
Type
Head Diameter
Tulip
Stem
Diameter
Radius
Angle
O. L.
Remarks
Intake
1.935”
49.15mm
0.3090"
R0.256
23°
3.620”
Standard
Exhaust
1.570”
39.88mm
0.3384"
R0.236
29°
3.512"
Standard
Kit Includes
2
In Std. Black Diamond™ Valves
2
Ex Std. Black Diamond™ Valves
33
KPMI P/N
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