KPMI Red Viton Valve Stem Seal 4-Pack - Harley Evolution
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.
Keep your Harley Evolution engine running clean and strong with KPMI Red Viton valve stem seals. This 4-pack is engineered to prevent oil from entering the combustion chamber, maintaining peak performance and reducing carbon buildup. They're designed for both intake and exhaust applications on Evolution powerplants.
Why riders pick this
- High-temperature Viton construction for V-twin engines
- Prevents oil migration into the combustion chamber
- Supports maximum valve lift without leakage
- Includes four seals for complete valve maintenance
These KPMI valve stem seals are crafted from high-temperature Viton material, specifically chosen for its resistance to petroleum products and extreme heat. This advanced material ensures a long-lasting seal, even under the demanding conditions of a performance V-twin engine.
Engineered for Performance and Durability
- Viton construction resists high temperatures and petroleum byproducts
- Prevents oil from entering the combustion chamber for cleaner burning
- Designed to accommodate maximum valve lift without leaking
- Four-pack quantity for comprehensive valve maintenance
Maintain Your Evolution Engine's Health
Proper valve stem seals are crucial for preventing oil blow-by, which can lead to carbon deposits and reduced engine efficiency. Installing these KPMI seals is a smart move for any rider looking to maintain or enhance the longevity and performance of their Harley Evolution motor, ensuring consistent power delivery and a cleaner burn. Confirm fitment for your specific model year before ordering.
Specifications
- Brand: KPMI
- Manufacturer Part #: 71010-4
- Quantity: 4 per pack
- Length: 1.3 in
- Width: 3.65 in
- Height: 0.7 in
- Weight: 0.02 lbs
Common questions
How many seals are included in this pack?
This pack contains four valve stem seals, suitable for a complete valve set on a single-cylinder or one front/rear pair on a V-twin engine.
Will these seals fit my Twin Cam engine?
No, these KPMI valve stem seals are specifically designed for Harley-Davidson Evolution engines. Twin Cam owners will need a different part number.
What are the benefits of Viton over standard rubber seals?
Viton material offers superior resistance to high temperatures, oil, and combustion byproducts compared to standard rubber, ensuring a more durable and effective seal.
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 | 191-37020 |
| WEIGHT | 0.02 lb |
