KPMI Valve Spring Kit - .600 Lift TC '2005-2010 EVO Sportster '2004-2011 — Harley-Davidson Sportster 1200 Custom, Super Low, Road King (2004-2017)

KPMI valve spring kit for .600 lift cams on Twin Cam 2005–2010 and EVO Sportster 2004–2011, wound from premium Kobe Super-Clean Chrome Silicon wire. Heat-treated, stress-relieved, and shot-peened for durability and harmonics matched to your cam profile.

Features

• Premium Kobe Super-Clean Chrome Silicon wire
• Heat-treated and stress-relieved construction
• Shot-peened for fatigue resistance
• Engineered for .600 lift cam applications

Specifications

• Brand: KPMI
• Manufacturer Part #: 20-20360
• Lift Rating: .600 inch
• Length: 6 in
• Width: 8 in
• Height: 2.25 in
• Weight: 1.35 lbs

Fitment

Fits Twin Cam engines 2005–2010 and EVO Sportster models 2004–2011 running .600 lift camshafts.

Frequently Asked Questions

Will these springs work with my .600 lift cam?

Yes — this kit is engineered specifically for .600 lift applications on Twin Cam and EVO Sportster engines.

Do I need new springs if I'm upgrading my cam?

If you're moving to a .600 lift cam from a milder profile, new springs matched to that lift are strongly recommended to prevent float and valve damage.

What material are these made from?

Premium Kobe Super-Clean Chrome Silicon wire, heat-treated, stress-relieved, and shot-peened for maximum life and reliability.

Do these fit 2011+ Sportster models?

This kit is for EVO Sportster 2004–2011. 2012 and newer Sportster S models use different engine architecture and require different springs.