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dyno-tested
street performance
BMR has designed the STB018 for the street performance
This kit includes new longer Grade 8 bolts
Ball Joint, Adjustable 4-Bolt, Upper GM (K6136) 1999 pontiac firebird dyno-testedQA1's 4 Bolt Style Ultimate Ball Joint is ideal for a variety of racing applications. Exclusive to QA1, this patented, self lubricating design is 100% owner rebuildable. Multiple stud lengths are also available, allowing for easy geometry changes. Infinite preload adjustment allows breakaway torque to be set as low as 0 ft. lbs. for a completely smooth, bind free operation. Precision tolerance ball to race conformity results in even load distribution
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