C674 Valve Guide

The Kibblewhite C674 Valve Guide is a precise, service-friendly solution for refreshing your engine’s valvetrain—especially when you want faster machining during rebuild work. Built from C674 bronze (a softer manganese bronze), it can be reamed and delicately finish-honed quickly with a drill and a quality ball hone, helping you save time while still achieving accurate fitment.

If your valvetrain is showing wear, excessive clearance, or you’re rebuilding the top end, a new valve guide helps restore proper valve alignment and sealing—supporting consistent performance and reliability.

Key features:

• ✅ C674 bronze (manganese bronze) material for quicker reaming and honing
• ✅ Manufactured to exacting KPMI® tolerances
• ✅ Designed for exhaust-side application

Benefits of use:

• 🔹 Faster guide sizing and finishing with common battery/electric drills
• 🔹 Helps restore proper valve-to-guide clearance for smoother, more consistent operation
• 🔹 Great choice when you want Kibblewhite precision with easier machinability than tougher premium guide materials

Technical specifications (when needed):

• 📌 Brand: Kibblewhite
• 📌 Vendor part number: 80-80930
• 📌 Application: Exhaust
• 📌 Material: C674 Bronze
• 📌 Inside diameter (ID): 0.1760"
• 📌 Outside diameter (OD): 0.3563"
• 📌 Size: Standard
• 📌 Units: Each

Why choose this product?

• ⭐ Made in the USA with a reputation for consistent machining and fit
• ⭐ Ideal for efficient valvetrain service—ream and hone in less time
• ⭐ A dependable replacement option for riders and builders doing top-end work