Racing Spring Kit, Steel, 0.600″ Lift, HD®, Panhead™, 1948-1965 # 20-20445


1 in stock

Panhead™, 1948-1965

  • Spring kit
  • Max Lift .600″

1 in stock


All KPMI® valve springs are designed in house using sophisticated, proprietary design and simulation software programs. Our engineers, software, and 75 years of experience enable us to determine critical characteristics including stress, natural frequency, system harmonics, and fatigue life. Our spring manufacturing partners are U.S based companies that are ISO certified. The Super-Clean Chrome-Silicon valve spring wire we use is traceable back to Kobe Japan where some of the best spring wire in the world is manufactured. Each spring goes through a rigidly controlled heat treatment, stress relief, and shot peening process. Combining our design, simulation, and manufacturing protocols with this premium quality valve spring wire allows KPMI® to supply you with the best possible valve springs period!

Installation Instructions Click Here
Type Intake/Exhaust
Retainer Material H.T. Steel
Valve Lift 0.600″
Installed Height 1.490″
Seat Pressure 160#
Open Pressure 395#
@ Lift 0.600″
Note These spring kits are designed to work with factory covers with no clearance issues. The basewasher is counterbored to fit a 0.665” outside diameter seal.

Additional information

Weight .3 kg
Dimensions 19 × 11 × 7 cm


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

You may also like…


Go to Top