KPMI +0.002 Cast Iron Exhaust Valve Guide - 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 cylinder heads that have seen extensive wear and require reboring, this KPMI +0.002 oversized cast iron exhaust valve guide is the precise solution. Engineered for Harley Evolution Big Twin and Sportster engines, it replaces severely worn guides to eliminate excessive valve stem play and prevent engine smoking.
Why riders pick this
- Cast iron construction for durability
- +0.002 inch oversized for rebored heads
- Eliminates excessive valve stem play
- Designed for Evolution Big Twin and Sportster
- Critical for comprehensive top-end rebuilds
When cylinder head bores are significantly worn, a standard or even a +0.001 oversized guide won't suffice. This KPMI exhaust valve guide, made from robust cast iron and machined to a +0.002 inch oversize, is specifically designed for cylinder heads that have been rebored to accommodate this larger dimension. It's a critical component for restoring optimal valvetrain geometry and engine health during a comprehensive rebuild.
Engineered for Rebored Cylinder Heads
- Durable cast iron construction for long-lasting performance
- +0.002 inch oversized diameter for rebored cylinder head bores
- Eliminates excessive valve stem play and oil consumption
- Designed for Evolution Big Twin and Sportster platforms
The Ultimate Fix for Worn Top-Ends
Using the correct oversized valve guide is paramount for a successful engine rebuild. This KPMI +0.002 cast iron guide provides the necessary precision when your cylinder head bores have been machined larger due to wear. This level of engine work requires specialized equipment and expertise, making professional machine shop installation essential. Ensure your Harley's valvetrain is rebuilt right with components designed for demanding performance.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2132C
- Material: Cast iron
- Valve Position: Exhaust
- Oversize: +0.002 inch
- Length: 1 in
- Weight: 0.08 lbs
Common questions
What does '+0.002 oversize' mean for this valve guide?
It means the outer diameter of this valve guide is 0.002 inches larger than a standard guide. It is specifically designed for cylinder heads that have been rebored to this larger size due to significant wear.
Will this fit a stock, non-rebored cylinder head?
No, this +0.002 oversized guide is intended only for cylinder heads that have been professionally rebored to accommodate its larger diameter. A stock head requires a standard or smaller oversized guide.
Is this valve guide for intake or exhaust valves?
This KPMI valve guide is an exhaust valve guide. Intake valve guides are a separate part with a different specification.
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 | 191-57031C |
| WEIGHT | 0.08 lb |
