KPMI Intake Valve Guide +0.002 Oversize 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.
When your Harley Evolution or Sportster engine shows signs of valve guide wear, a precision-machined replacement is critical for engine health. This KPMI intake valve guide is crafted from durable cast iron with a +0.002 inch oversize bore, designed to restore proper valve stem clearance.
Why riders pick this
- Cast iron construction for durability
- +0.002 inch oversize bore for worn cylinder heads
- Restores proper valve stem clearance
- Reduces oil blow-by and consumption
- Direct replacement for stock intake guides
This KPMI intake valve guide is an essential component for rebuilding or repairing your Harley-Davidson Evolution or Sportster cylinder heads. Engineered from robust cast iron, it's designed to withstand the demanding environment of a high-performance V-twin, ensuring long-lasting reliability and optimal engine function. The +0.002 inch oversize bore allows for precise fitment in cylinder heads that have experienced minor wear, helping to eliminate excessive valve stem play and improve oil control.
Precision Engineering for Your V-Twin
- Durable cast iron construction for extended service life
- +0.002 inch oversize bore designed to compensate for minor head wear
- Restores proper valve stem-to-guide clearance for improved sealing
- Reduces oil consumption and blow-by caused by worn guides
Maintaining Peak Engine Performance
Replacing worn valve guides is a critical step in maintaining the performance and longevity of your Harley-Davidson. This KPMI guide is a direct replacement, simplifying the restoration process for your Evolution Big Twin or Sportster. For optimal results, consult with your engine builder or machinist to ensure correct installation and reaming procedures are followed, guaranteeing a tight, leak-free seal and peak performance from your V-twin power plant.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2122C
- Length: 1.1 in
- Width: 3.5 in
- Height: 0.65 in
- Weight: 0.08 lbs
Common questions
What does the +0.002 oversize mean for installation?
The +0.002 inch oversize bore means the guide is slightly larger than stock. This is typically used when the cylinder head's guide bore has experienced wear and needs a larger diameter guide to achieve a proper press fit after reaming.
Is this valve guide compatible with my Harley Evolution or Sportster?
This KPMI intake valve guide is designed for Harley Evolution Big Twin engines from 1984-1999 and Sportster engines from 1986-2003. Please confirm your specific year and model using our Shop by Bike tool to ensure correct fitment.
Do I need to ream the cylinder head after installing this guide?
Yes, after pressing in a new valve guide, it is standard practice to ream the guide to its final size. This ensures proper clearance for the valve stem and concentricity with the valve seat.
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 | 191-57053C |
| WEIGHT | 0.08 lb |
