KPMI Standard Cast Iron Intake 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.
This KPMI standard size cast iron intake valve guide is a direct OEM replacement for Harley Evolution and Sportster engines. It’s engineered to restore proper valve stem clearance and ensure optimal cooling, which are critical for your V-twin's top-end health. This guide helps maintain engine efficiency and longevity.
Why riders pick this
- Durable cast iron construction
- Standard size direct OEM replacement
- Ensures proper valve stem alignment
- Maintains critical valve clearances
- Essential for top-end rebuilds
When your Harley's top-end needs attention, precise components are non-negotiable. This KPMI standard size intake valve guide, crafted from durable cast iron, is designed to be a direct replacement for original guides in Evolution big-twin (1984-1999) and Sportster (1986-2003) models. It ensures the valve stem remains properly aligned within the cylinder head, crucial for efficient valve operation and preventing premature wear.
OEM-Quality Restoration
- Constructed from robust cast iron for durability
- Standard (STD) size for direct fitment in original bores
- Designed specifically for the intake valve position
- Maintains proper valve stem clearance and cooling
Essential for Engine Health
Replacing worn valve guides is a fundamental part of any engine rebuild or cylinder head service. This KPMI cast iron standard intake guide provides the necessary precision to bring your Evolution or Sportster engine back to factory specifications. It’s an ideal choice for riders looking for reliable, OEM-style replacement parts to ensure their V-twin continues to perform as intended. Always confirm your engine's specific requirements before purchasing.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-2120C
- Material: Cast iron
- Length: 0.9 in
- Width: 3.6 in
- Height: 0.8 in
- Weight: 0.08 lbs
Common questions
What does standard size mean for this valve guide?
Standard size means this guide is designed to fit directly into the cylinder head bore without any modification, assuming the bore itself is not worn beyond factory specifications.
Is this KPMI valve guide for intake or exhaust valves?
This specific part is an intake valve guide only. For exhaust valve guides, you will need to order a separate, corresponding part number.
Will this fit my Harley Evolution or Sportster model?
This guide fits Harley Evolution big-twin models from 1984-1999 and Sportster models from 1986-2003. It is not compatible with later Twin Cam or Milwaukee-Eight engines. Please verify fitment using our Shop by Bike tool.
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 | 191-57051C |
| WEIGHT | 0.08 lb |
