KPMI Exhaust Valve Guide +0.004 Cast Iron - Harley Evolution & Sportster
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.
This KPMI cast iron exhaust valve guide is engineered to restore optimal performance to your Harley Evolution or Sportster engine. Featuring a +0.004 inch oversize, it's designed to correct valve stem clearance and reduce oil consumption in cylinder heads with worn guide bores.
Why riders pick this
- Durable cast iron construction
- +0.004 inch oversize for worn bores
- Exhaust valve specific
- Restores valve stem clearance
- Reduces oil blow-by
- Direct fit for Harley Evolution and Sportster
A healthy top end is crucial for your V-twin's power and reliability. Worn exhaust valve guides can lead to a host of issues, including oil blow-by and inconsistent compression. This KPMI cast iron guide offers a durable solution, allowing for a direct replacement into existing worn bores. Its precise +0.004 inch oversize ensures a snug fit, bringing your cylinder heads back to spec without the need for extensive machining.
Reliable Performance for Your V-Twin
- Constructed from robust cast iron for long-term durability
- +0.004 inch oversize for direct replacement in worn guide bores
- Specifically designed for the exhaust valve position
- Effectively restores proper valve stem clearance
- Helps reduce oil blow-by and improve sealing on EVO and Sportster engines
The Right Choice for Engine Maintenance
When performing maintenance or a rebuild on your Harley Evolution or Sportster, selecting the correct valve guide is paramount. This KPMI +0.004 cast iron exhaust guide is ideal for addressing moderate wear in your cylinder head's guide bores. While it's a direct replacement, professional installation is recommended to ensure precise seating and alignment, which are critical for the longevity and performance of your V-twin engine.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2134C
- Material: Cast iron
- Size: +0.004 in oversize
- Length: 1 in
- Weight: 0.09 lbs
Common questions
What does +0.004 inch oversize mean?
This guide has a diameter 0.004 inches larger than stock, designed to fit into cylinder head bores that have experienced wear, restoring proper clearance.
Is this guide for the intake or exhaust valve?
This KPMI part is an exhaust valve guide. Intake guides are sold separately.
Will this fit my 2004 or newer Sportster?
No, this guide is for older Sportster models (1986-2003) and Evolution Big Twin engines (1984-1999). Twin Cam and Milwaukee-Eight Sportsters use different valve guides.
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 | 191-57033C |
| WEIGHT | 0.09 lb |
