2026 KPMI Full Catalog V1 - Flipbook - Page 55
HD SHOVELHEAD 74" 1966-1977
®
™
KPMI P/N
Max
Valve Lift
Type
Installed
Height
Seat
Pressure
Open
Pressure
Same as
Sifton P/N
@ Lift
Intake
.600"
1.510"
152#
387#
.600"
3030
Exhaust
Outer Spring ID
Inner Spring ID
Solid Height
1.249"
0.975"
0.850"
Kit Includes
4
CrSi Valve Springs
Achieving the recommended installation height may require KPMI® retainer 20-4248, which is o昀昀set 0.070” compared to OEM.
20-2000
Harley-DaviDson
Valve Spring Only Kit • High Performance
Retainer Set • H. A. Aluminium
KPMI P/N
Type
Intake
20-4248
Exhaust
Material
I/ Spring
Retainer Ø
O/ Spring
Retainer Ø
Taper Angle
Quantity
H. A.
Aluminium
0.975"
1.255"
15°
Pkg. of 4
This retainer is o昀昀set 0.070" when compared to OEM.
Valve Guides • C630 Bronze • Cast Iron
A
B
C
D
E
F
G
0.450”
0.540”
0.810”
1.340”
0.745”
0.3760”
0.5650” / Std.
+0.001”
+0.002”
+0.003”
+0.004”
+0.006”
+0.008”
+0.010”
+0.025”
A
B
C
D
E
F
G
0.450”
0.540” 0.810” 1.340”
0.745” 0.3760” 0.5650” / Std.
+0.001”
+0.002”
+0.003”
+0.004”
+0.006”
+0.008”
+0.010”
+0.025”
For sizing KPMI® Cast Iron Valve Guides please use Reamers and Ball Hones listed in HD® Tool section (Pg.90-93).
Intake
C630 Bronze
Cast Iron
20-2020
20-2021
20-2022
20-2023
20-2024
20-2026
20-2028
20-2029
20-20HS
20-2020C
20-2021C
20-2022C
20-2023C
20-2024C
20-2026C
20-2028C
20-2029C
20-20HSC
Exhaust
20-2030
20-2031
20-2032
20-2033
20-2034
20-2036
20-2038
20-2039
20-30HS
20-2030C
20-2031C
20-2032C
20-2033C
20-2034C
20-2036C
20-2038C
20-2039C
20-30HSC
A
0.375”
B
0.465”
C
0.885”
D
1.435”
E
0.745”
F
0.3760”
G
0.5650” / Std.
+0.001”
+0.002”
+0.003”
+0.004”
+0.006”
+0.008”
+0.010”
+0.025”
For sizing KPMI® Manganese Bronze Valve Guides please use Reamers and Ball Hones listed in HD® Tool section (Pg.90-93).
Intake
Exhaust
20-2020M
20-2021M
20-2022M
20-2023M
20-2024M
20-2026M
20-2028M
20-2029M
20-20HSM
20-2030M
20-2031M
20-2032M
20-2033M
20-2034M
20-2036M
20-2038M
20-2039M
20-30HSM
Visit us at www.kpmi.us
37
Valve Guides • Manganese Bronze
