Single Groove Black Diamond Replacement Valves for Evo, Big Twin, Twin Cam

Goodson Tools & Supplies

Light and strong with optimum airflow. Stellite tips for rocker applications. Black Diamond Valves feature one piece forged stainless steel valves impregnated with a special German process to improve wear and reduce friction. Also provides resistance to corrosion and improves wear.

Manufactured by Kibblewhite Precision Machining.

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Order No. Description Price Quantity
20-20990 Intake | 2.020" Head Dia. | 0.3108" Stem Dia. | 0.670 Radius | 25º Angle | 4.440" OAL | Supercedes HBV-2020A $23.99
20-20960 Exhaust | 1.700" Head Dia. | 0.3106" Stem Dia. | 0.600 Radius | 25º Angle | 4.535" OAL | Supercedes HBV-1700A $23.99
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