KPMI Intake Valve Guide +0.003 Oversize Bronze - 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.
For Harley Evolution and Sportster engines experiencing valve guide wear, this KPMI intake valve guide offers a robust bronze construction with a +0.003 inch oversize bore. It's engineered to restore precise valve stem alignment and sealing within your cylinder heads.
Why riders pick this
- Bronze construction for superior wear resistance
- +0.003 inch oversize bore for cylinder head wear
- Restores proper valve seating and engine sealing
- Designed for Harley Evolution and Sportster engines
- Direct replacement for worn intake guides
This KPMI intake valve guide is a premium upgrade for rebuilding or repairing your Harley-Davidson Evolution or Sportster engine. Constructed from high-quality bronze, it provides superior wear resistance and heat dissipation compared to traditional materials, making it ideal for performance applications. The +0.003 inch oversize bore is designed to fit cylinder heads that have experienced moderate wear, allowing for a tight, concentric fit and optimal valve operation.
Enhanced Durability for Performance V-Twins
- Premium bronze material for increased wear resistance
- +0.003 inch oversize diameter to correct worn guide bores
- Ensures proper valve seating and improved engine sealing
- Direct replacement for stock intake valve guides
Critical for Engine Health and Performance
Proper valve guide clearance is fundamental to both engine performance and longevity. This KPMI bronze intake valve guide helps prevent excessive oil consumption and maintains stable valve operation, crucial for any Harley-Davidson. When performing cylinder head work, ensure that the head bore is properly prepared by a qualified machinist to accept this oversize guide, guaranteeing a precise and lasting repair for your V-twin.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2123
- Length: 5.13 in
- Width: 3.5 in
- Height: 0.85 in
- Weight: 0.08 lbs
Common questions
Will this +0.003 oversize guide fit my specific Harley model?
This KPMI intake valve guide is compatible with Harley Evolution Big Twin engines from 1984-1999 and Sportster engines from 1986-2003. Always verify fitment for your exact year and model using our Shop by Bike feature.
What are the benefits of a bronze valve guide over cast iron?
Bronze valve guides typically offer enhanced heat transfer properties and improved lubricity, which can contribute to longer guide life and reduced valve stem wear, especially in performance applications.
Do I need to prepare the cylinder head bore before installation?
Yes, for a proper fit with an oversize guide, the cylinder head bore should be accurately honed or reamed to match the +0.003 inch specification. Professional installation by a machinist is recommended.
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 | 191-57054 |
| WEIGHT | 0.08 lb |
