2026 KPMI Full Catalog V1 - Flipbook - Page 91
HD TWIN CAM 88" 1999-2004
®
™
KPMI P/N
20-23050
Max Valve Lift Installed Height Seat Pressure Open Pressure
Type
Intake
Exhaust
.600”
4
4
4
2
Kit Includes
1.810”
163#
361#
@ Lift
.600”
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
Harley-DaviDson
Engine Kit with Lightweight Racing Valve Spring Kit
Components • Replacement • Engine Kit
KPMI P/N
20-20132
71010-4
20-20055
20-20057
Speci昀椀cation
Description
Spring Kit
Intake / Exhaust Seal
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
20-23000
Type
Head Diameter
Tulip
Stem
Diameter
Radius
Angle
O. L.
Remarks
Intake
1.840"
46.74mm
0.3100"
R0.234
23°
4.445"
Standard
Exhaust
1.565"
39.75mm
0.3095"
R0.250
17°
4.505
Standard
2
In Std. Black Diamond™ Valves
Kit Includes
2
Ex Std. Black Diamond™ Valves
Valves • Black Diamond™ • Black Nitroneg Stems For All 5/16 Stem Valves
O. L.
Remarks
0.3100"
Tulip
Radius Angle
R0.234
23°
4.445"
OEM18074-83A
48.26mm
0.3100"
R0.344
28°
4.420"
Oversize
50.80mm
0.3100"
R0.234
23°
4.445"
Oversize
2.150"
54.61mm
0.3108"
R0.550
24°
4.480"
AV&V# AV2150
1.990"
50.55mm
0.3108"
R0.675
25°
4.440"
AV&V# AV1990
Intake
1.940"
49.28mm
0.3108"
R0.675
25°
4.440"
AV&V# AV1940
Intake
1.900"
48.26mm
0.3108"
R0.675
25°
4.440"
AV&V# AV1900
Intake
2.100"
53.34mm
0.3108"
R0.560
24°
4.475"
AV&V# AV2100
Intake
2.020"
51.31mm
0.3108"
R0.670
25°
4.440"
AV&V# AV2020A
Intake
2.020"
51.31mm
0.3108"
R0.645
25°
4.510"
AV&V# AV2020S
Exhaust
1.565"
39.75mm
0.3095"
R0.250
17°
4.505
OEM18085-991
Exhaust
1.650"
41.91mm
0.3106"
R0.750
25°
4.515"
AV&V# AV1650
Exhaust
1.610"
40.89mm
0.3106"
R0.750
25°
4.510"
AV&V# AV1610D
Exhaust
1.585"
40.26mm
0.3106"
R0.750
25°
4.505"
AV&V# AV1585
Exhaust
1.700"
43.18mm
0.3106"
R0.600
25°
4.535"
AV&V# AV1700A
Exhaust
1.610"
40.89mm
0.3106"
R0.750
25°
4.565"
AV&V# AV1610S
KPMI P/N
Type
Head Diameter
Stem
Diameter
20-20055
20-20056
20-20108
20-20900
20-20905
20-20910
20-20915
20-20955
20-20990
20-20965
20-20057
20-20920
20-20925
20-20930
20-20960
20-20970
Intake
1.840"
46.74mm
Intake
1.900"
Intake
2.000"
Intake
Intake
Valves • Black Diamond™ • Specially Designed For HD Racing Applications
Type
Tulip
Stem
Head Diameter Diameter
Radius Angle
O. L.
Remarks
20-4169
In Black Diamond™ 1.940" 49.28mm 0.3100" R0.234
20-B101
Ex Black Diamond™ 1.615" 41.02mm 0.3096" R0.325 RO1.625 4.460" Branch Heads
20-4170R
Ex Black Diamond™ 1.630" 41.40mm 0.3096" R0.500
23°
40°
4.400" Branch Heads
4.525"
Oversize
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KPMI P/N
