2026 KPMI Full Catalog V1 - Flipbook - Page 96
HD TWIN CAM 88"-103" 2005-2017
®
™
HARLEY-DAVIDSON
Engine Kit with Lightweight Racing Valve Spring Kit
KPMI P/N
20-23150
Type
Max Valve Lift Installed Height Seat Pressure Open Pressure
Intake
.610”
Exhaust
4
4
4
2
Kit Includes
1.860"
175#
400#
@ Lift
.610”
In / Ex H. T. Steel Retainers
4
In / Ex H.T. Steel Keeprs Pr.
In / Ex CrSi Valve Springs
4
In / Ex H. T. Steel Basewashers
In/ Ex Red Viton® Seals
™
In Std. Black Diamond Valves 2
Ex Std. Black Diamond™ Valves
Components • Replacement • Engine Kit
KPMI P/N
20-21400
20-20322
20-20325
Description
Spring Kit
Intake, Standard Valve
Exhaust, Standard Valve
Speci昀椀cation
Includes: H. T. Steel Retainers, CrSi Valve Springs, H.T. Steel Basewashers, H.T. Steel Keeprs
Valve • Black Diamond™ • Black Nitroneg Stems
Valve • Black Diamond™ • Black Nitroneg Stems
Valve Kit • Black Diamond™ • Black Nitroneg Stems
20-23100
Tulip
Type
Head Diameter
Stem
Diameter
Radius
Angle
Intake
1.805"
45.85mm
0.2760"
R0.413
Exhaust
1.575"
40.00mm
0.2755"
R0.354
2
In Std. Black Diamond™ Valves
KPMI P/N
Kit Includes
O. L.
Remarks
1.700”R
4.420"
Standard
22°
4.520”
Standard
2
Ex Std. Black Diamond™ Valves
Valves • Black Diamond™ • Black Nitroneg Stems
KPMI P/N
Type
Head Diameter
Stem
Diameter
20-20322
20-20323R
20-20935
20-20940
20-20325
20-20326R
20-20945
20-20950
Intake
Intake
Intake
Intake
Exhaust
Exhaust
Exhaust
Exhaust
1.805"
1.900"
1.980"
1.900"
1.575"
1.630"
1.610"
1.575"
0.2760”
0.2760”
0.2757”
0.2757”
0.2755"
0.2755"
0.2755"
0.2755"
Tulip
Radius Angle
R0.413 1.700”R
R0.344
28°
R0.290
23°
R0.475
24°
R0.354
22°
R0.500
34°
R0.595
25°
R0.595
25°
45.85mm
48.26mm
50.29mm
48.26mm
40.00mm
41.40mm
40.89mm
40.00mm
O. L.
Remarks
4.420"
4.420"
4.455"
4.445"
4.520”
4.520”
4.545"
4.560"
OEM18074-05
Oversize
AV1980-7TGB
AV1900-7TGB
OEM18085-991
Oversize
AV1610-7TGB
AV1575-7TGB
Valves • Black Diamond™ • Fat Stem • Black Nitroneg Stems
KPMI P/N
Type
Head Diameter
Stem
Diameter
Tulip
Radius Angle
O. L.
Remarks
20-20772
Intake
1.805"
45.85mm
0.2810"
R0.413
1.700”R
4.415”
Standard
20-20776
Exhaust
1.575"
40.00mm
0.2805"
R0.374
23º
4.510”
Standard
KPMI® Reamer GR-2820 should be used to size the OEM valve guides to accommodate these valves.
Valve Seats • Powdered Metal
O. D.
KPMI P/N
Type
I. D.
Height
Quantity
10-SC500
10-SC510
10-SC541
10-SC446
Intake
1.969”
50.00mm
1.535”
39.00mm
0.453”
11.50mm
Pkg. of 1
Intake
2.007”
50.98mm
1.562”
39.67mm
0.450”
11.43mm
Pkg. of 1
Intake
2.132”
54.15mm
1.690”
42.93mm
0.450”
11.43mm
Pkg. of 1
Exhaust
1.757”
44.62mm
1.375”
35.00mm
0.450”
11.43mm
Pkg. of 1
KPMI’s proprietary seat material is compatible with leaded and unleaded fuels including methanol and ethanol fuel blends. This material o昀昀ers excellent
thermal characteristics and resists microwelding that leads to seat and valve face recession. Leading edge has generous radius to ease installation.
78
order 650-557-2046
