KPMI Valve Guide - Exhaust 0.001 Bronze M8 — Harley-Davidson Road King, Road King Special, Electra Glide Ultra Classic (2017-2019)

KPMI exhaust valve guide for Milwaukee-Eight (M8) engines, precision-machined from bronze with 0.001 in manufacturing tolerance for OEM-spec fitment. Direct replacement for stock guides during top-end service or rebuild.

Features

• Bronze construction
• 0.001 in manufacturing tolerance
• 3.5 in length
• Exhaust position

Specifications

• Brand: KPMI
• Manufacturer Part #: 20-21031
• Material: Bronze
• Length: 3.5 in
• Width: 5.12 in
• Height: 1 in
• Weight: 0.09 lbs

Fitment

Fits Harley-Davidson Milwaukee-Eight (M8) engines as an exhaust valve guide replacement.

Frequently Asked Questions

Is this for intake or exhaust?

Exhaust. KPMI offers separate part numbers for intake guides — check the MPN before ordering.

What's the tolerance on this guide?

0.001 in manufacturing tolerance for OEM-spec fitment. Precision-machined bronze ensures proper valve stem clearance.

Do I need both intake and exhaust guides?

Depends on your rebuild scope. If you're replacing one, inspect the other — both may need service if the engine has high miles.

Is installation straightforward?

Valve guide installation requires a press and proper alignment tools. This is a job for experienced rebuilders or a Harley shop.