KPMI Valve Guide - IN / EX +0.002 Iron HD EVO 1984-1999 — Harley-Davidson Electra Glide Classic, Sportster 883, Softail Heritage Classic (1984-2004)

KPMI valve guides for Harley Evolution Big Twin engines, sold as a matched set for intake and exhaust ports. Machined from iron and sized +0.002 inch oversize to restore clearances in worn cylinder heads on 1984-1999 EVO models.

Features

• Intake and exhaust valve guide set
• +0.002 inch oversize sizing
• Iron construction
• Direct replacement for 1984-1999 Evolution engines

Specifications

• Brand: KPMI
• Manufacturer Part #: 20-4322C
• Material: Iron
• Oversize: +0.002 inch
• Length: 5.13 in
• Weight: 0.1 lbs

Fitment

Fits Harley-Davidson Evolution Big Twin engines, model years 1984-1999. Sized +0.002 inch oversize for cylinder heads with standard wear.

Frequently Asked Questions

Will this fit my Twin Cam or Milwaukee-Eight engine?

No — this part is specific to Evolution (EVO) Big Twin engines only. Twin Cam and Milwaukee-Eight models use different guides.

What does +0.002 inch oversize mean?

The guides are machined 0.002 inch larger in diameter to fit cylinder heads where standard guides have worn loose. Reaming the head to +0.002 is required.

Are both intake and exhaust guides included?

Yes — the set includes matched guides for both intake and exhaust ports.

Do I need to ream my cylinder head?

Yes. Your cylinder head must be reamed to +0.002 inch bore to accept these oversize guides. A machine shop can perform this work.