2026 KPMI Full Catalog V1 - Flipbook - Page 53
HD SPORTSTER 1970-1983
®
™
KPMI P/N
Material
O. D.
I. D.
O. L.
Quantity
20-2106
Manganese Bronze
0.6795”
0.548”
1.065”
Pkg. of 8
Wrist Pin Bushings • Engine Builder Series • Manganese Bronze For Sportster 1957-1983
KPMI P/N
Material
O. D.
I. D.
O. L.
Remarks
Quantity
20-20810
Manganese Bronze
0.897"
0.788"
0.945"
Standard
Pkg. of 1
20-20812
Manganese Bronze
0.899"
0.788"
0.945"
+0.002”
Pkg. of 1
Harley-DaviDson
Rocker Arm Bushings • Manganese Bronze
Made from Manganese Bronze to exact tolerances, these bushings will meet or exceed 昀椀tment and wear ability of all other replacement style bushings available.
Wrist Pin Bushings • High Performance • C630 Bronze For Ironhead Sportster 1957-1983
KPMI P/N
Material
O. D.
I. D.
O. L.
Quantity
20-0644
C630 Bronze
0.897"
0.788"
0.945"
Pkg. of 1
KPMI® has developed what we believe to be the highest quality wrist pin bushings available. Our wrist pin bushings are machined from a solid Nickel Bronze alloy,
with an exceptional Rockwell hardness rating. These bushings are a must for high performance applications.
HD SHOVELHEAD 74" 1966-1977
®
™
Valve Spring Kit • Lightweight Racing
KPMI P/N
Type
Max Valve Lift Installed Height
Seat Pressure Open Pressure
@ Lift
Intake
20-2110
.600”
1.510"
152#
387#
.600"
4
H.A. 7075-T6 Retainers
4
H. T. Steel Keepers Pr.
4
CrSi Valve Springs
4
H. T. Steel Basewashers
Exhaust
Kit Includes
Retainer o昀昀set 0.070” for taller installed height. Basewashers counter-bored to accept a 0.665” OD seal
KPMI P/N
Type
Max Valve Lift Installed Height
Seat Pressure Open Pressure
@ Lift
Intake
20-20450
.600”
1.510"
152#
4
H. T. Steel Retainers
4
H. T. Steel Keepers Pr.
4
CrSi Valve Springs
4
H. T. Steel Basewashers
Exhaust
387#
.600"
Kit Includes
35
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.
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