KPMI Bronze +0.001in Oversize Intake Valve Guide - Harley Panhead & Shovelhead
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 rebuilding a vintage Panhead or Shovelhead engine, worn valve guide bores can compromise performance. This KPMI bronze intake valve guide is sized at +0.001in oversize, offering a precision fit for cylinder heads that have been machined to accommodate a slightly larger guide. It's essential for restoring proper valve stem alignment and sealing.
Why riders pick this
- +0.001in oversize for worn valve guide bores
- Durable bronze construction for longevity
- Specifically for intake valve applications
- Restores precise valve stem alignment
- Fits Harley Panhead (1948-1965) and Shovelhead (1966-1977)
This KPMI bronze intake valve guide is specifically designed for Harley Panhead engines (1948-1965) and Shovelhead engines (1966-1977). Crafted from durable bronze, it provides excellent wear characteristics and thermal stability, crucial for the longevity of your vintage V-twin. The +0.001in oversize ensures a tight, secure fit in cylinder heads that require a slight increase in bore diameter due to wear or previous machining. Proper valve guide fitment is key to preventing oil consumption and maintaining consistent valve train operation.
Enhanced Valve Train Stability
- +0.001in oversize for precision fit in machined bores
- Durable bronze construction for extended life
- Specifically for intake valve positions
- Restores proper valve stem alignment
- Fits Panhead 1948-1965 and Shovelhead 1966-1977
Critical for a Quality Vintage Rebuild
Installing oversized valve guides requires accurate machining of your cylinder heads to ensure the bore is perfectly matched to the +0.001in guide. This precision is vital for maximizing valve train stability and engine reliability. This KPMI bronze intake valve guide is a premium component for any rider committed to a thorough and high-performance rebuild of their classic Harley-Davidson Panhead or Shovelhead engine.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2021
- Material: Bronze
- Length: 1.15 in
- Width: 3.6 in
- Height: 0.8 in
- Weight: 0.06 lbs
Common questions
What does +0.001in oversize mean for this valve guide?
The +0.001in oversize means this guide is 0.001 inches larger in diameter than a standard guide. It's used when the valve guide bore in the cylinder head has worn slightly or has been machined to a larger size.
Is this valve guide for both intake and exhaust valves?
No, this KPMI valve guide is designed for the intake valve position only. You will need to purchase a separate exhaust valve guide if you are replacing both.
Will this fit my Shovelhead or Panhead engine?
Yes, this +0.001in oversize intake valve guide is compatible with Harley Panhead engines from 1948-1965 and Shovelhead engines from 1966-1977, provided your cylinder head is machined to accept the oversized guide.
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 | 191-57042 |
| WEIGHT | 0.06 lb |
