Introducing the new KVS11-BT Beehive Spring & Titanium Retainer to suit the serious racer. Designed to match our newly released 214-D drag cams and to offer a big RPM, big BOOST application to the 4B11 world.
These springs are designed for 10,000+RPM and 50 lb's+ of boost making them the best performing springs available for the 4B11.
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