KPMI Standard Bronze Valve Guide - Evolution Intake & Exhaust - Harley Evolution 1987-1999
About KPMI
Kibblewhite Precision Machining supplies valves, valve springs, guides and complete top-end kits used by professional V-twin engine builders. Its black diamond valves and spring kits are a standard specification on high-lift cam builds.
Keep your Harley Evolution engine running strong with KPMI standard bronze valve guides. These direct OEM replacements are engineered to restore proper valve stability and sealing, crucial for maintaining optimal engine performance. Designed for both intake and exhaust positions, they are a vital component in any top-end refresh.
Why riders pick this
- Bronze construction for lasting durability
- Standard size fits factory bore without reaming
- Works for both intake and exhaust valves
- Direct OEM-spec replacement for Evolution engines
- Restores proper valve stability and sealing
Worn valve guides can lead to excessive oil consumption and reduced engine efficiency. KPMI bronze valve guides are precision-machined to factory specifications, providing a tight, consistent fit for your valve stems. This ensures accurate valve seating and extends the life of your cylinder head components.
Precision-Engineered for Longevity
- Durable bronze construction for extended wear life
- Standard size for direct fit into factory bore without machining
- Compatible with both intake and exhaust valve positions
- Engineered as a direct OEM-spec replacement for Evolution engines
Maintain Peak Engine Health
Replacing worn valve guides is a critical step in any Evolution engine rebuild or top-end service. These KPMI guides help eliminate play in the valve train, which can otherwise lead to premature valve and seat wear. Ensure your 1987-1999 Evolution motor operates at its best by addressing these essential components.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-4320
- Length: 3.45 in
- Width: 5.9 in
- Height: 0.65 in
- Weight: 0.06 lbs
Common questions
Will this valve guide fit my Twin Cam or Milwaukee-Eight engine?
No, these KPMI valve guides are specifically designed for Harley-Davidson Evolution engines from 1987-1999. Twin Cam and Milwaukee-Eight models require different valve guides due to design variations.
Do I need to perform any machining on my cylinder head for installation?
No, these are standard size valve guides designed for direct fit into a factory bore. They do not require honing or reaming for installation.
Can I use this same guide for both intake and exhaust valves?
Yes, this KPMI valve guide is designed to fit both the intake and exhaust valve positions on 1987-1999 Harley Evolution cylinder heads.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | KPMI |
| TYPE | Engine |
| SKU | 191-57003 |
| WEIGHT | 0.06 lb |
