20-4257 Black Diamond Intake Valve Hd Panhead 48 65
Elevate your engine’s performance with the 20-4257 Black Diamond Intake Valve. Designed specifically for the Panhead models from 1948 to 1965, this premium valve is engineered to deliver unmatched reliability and efficiency.
Key Features:
- Advanced Black Diamond® Technology: Each valve undergoes a unique German impregnation process, enhancing durability with a depth of .002” and a surface build-up of .0002”.
- Superior Wear Resistance: The Black Diamond® finish offers exceptional protection against corrosion and wear, far surpassing traditional chrome and nickel electrolysis plating.
- Lightweight and Strong: Constructed from one-piece forgings, these valves combine strength with reduced weight for optimal performance.
- Enhanced Flow Characteristics: The specially designed profiles ensure excellent airflow, contributing to improved engine efficiency and power.
Benefits:
- Improved engine longevity due to superior wear resistance.
- Enhanced performance for Panhead models, making every ride more exhilarating.
- Reduced friction leads to better fuel efficiency and overall engine response.
Use Cases:
- Ideal for restoring or upgrading your 1948-1965 Panhead engine.
- Perfect for performance enthusiasts seeking to enhance their bike’s capabilities.
- Suitable for repair shops and mechanics specializing in vintage motorcycle restorations.
Transform your ride and experience the difference with the 20-4257 Black Diamond Intake Valve—where innovation meets tradition.





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