KPMI Valve Spring Kit - .625 Lift Titanium Retainers — Harley-Davidson Road King, Tri Glide Ultra Classic, Electra Glide Ultra Limited (2017-2020)

KPMI valve spring kit with .625 lift titanium retainers, wound from premium Kobe Super-Clean chrome silicon wire and heat-treated for durability. Each spring is engineered for its specific application using advanced simulation software to optimize cam harmonics, stress distribution, and operating RPM performance.

Features

• Premium Kobe Super-Clean chrome silicon wire
• Heat-treated and stress relieved
• Shot peened for durability
• .625 lift titanium retainers
• Engineered for specific cam and spring harmonics

Specifications

• Brand: KPMI
• Manufacturer Part #: 20-21800
• Lift: .625 in
• Retainer Material: Titanium
• Length: 6 in
• Width: 2.25 in
• Height: 1.8 in
• Weight: 8 lbs

Frequently Asked Questions

What makes KPMI springs different from stock springs?

KPMI springs are engineered for each application using advanced simulation software to optimize harmonics, stress, and RPM performance beyond stock specifications.

What's included in this kit?

This is a complete valve spring kit with .625 lift titanium retainers, ready to install for your specific engine application.

Are these springs street-legal?

Verify with your local regulations and emission authority before installation, as performance springs may not be street-legal in all jurisdictions.