QA1 GM (K6136) +.500in Stud Upper Bolt-In Style Ball Joint - 1210-203B

QA1'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 for unsurpassed wear resistance. Precision ground 52100 bearing steel race ensures long life and ultra-smooth operation. No need to remove the ball joint from the car for adjustment. Enhanced by self-lubricating components to ensure smooth operation. Fine tune your roll center. QA1 ball joints are owner rebuildable, and all parts are replaceable at economical prices.

This Part Fits:

Year	Make	Model	Submodel
1978-1980	Chevrolet	C10	Big Ten
1975-1981	Chevrolet	C10	Cheyenne
1981-1986	Chevrolet	C10	Custom
1975-1980	Chevrolet	C10	Custom Deluxe
1981	Chevrolet	C10	Deluxe
1975-1986	Chevrolet	C10	Scottsdale
1975-1986	Chevrolet	C10	Silverado
1973-1974	Chevrolet	C10 Pickup	Base
1973-1974	Chevrolet	C10 Suburban	Base
1981-1986	Chevrolet	C10 Suburban	Custom
1975-1980	Chevrolet	C10 Suburban	Custom Deluxe
1981	Chevrolet	C10 Suburban	Deluxe
1975-1980,1982,1984-1986	Chevrolet	C10 Suburban	Scottsdale
1975-1980,1982-1986	Chevrolet	C10 Suburban	Silverado

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Please note image may vary from product. Also, some items are special order. If delivery time is a concern, please contact us prior to purchase. 

Fidanza Performance is excited to offer QA1 Suspension

About - QA1 Suspension​

QA1 Precision Products, Inc., founded in 1993 and based in Lakeville, Minnesota, is a leading American manufacturer of high-performance suspension and driveline components. The company is known for producing quality coil-over kits, control arms, sway bars, adjustable shocks, and carbon fiber driveshafts, primarily for muscle cars, classic trucks, drag racing, and pro-touring builds.

QA1 stands out for its in-house engineering and manufacturing, with most products made in the USA. Their suspension systems are especially popular among enthusiasts looking to modernize older vehicles like Chevelles, Mustangs, and classic GM and Ford trucks. Known for their adjustability and durability, QA1 products are widely respected across both street and track applications.

With a strong reputation for quality and performance, QA1 supports the automotive community through events, sponsorships, and their annual open house. Their accessible performance upgrades have made them a trusted name in the aftermarket suspension world.

Fidanza Performance, founded in 1997, is a leading US manufacturer of high-quality lightweight aluminum flywheels, precision adjustable cam gears, and high-performance clutches. With nearly 20 years in the automotive performance market, Fidanza is renowned for its expertise and respected globally, offering products for a wide range of vehicles, from European sports cars to modern muscle cars and imports. The company originated in racing, with founder Lou Fidanza's success in the SCCA leading to the creation of specialty parts like aluminum flywheels. Fidanza has since expanded its product line to include cam gears and performance clutches, gaining a loyal customer base and worldwide recognition. In 2023 Fidanza opened the SpeedParts4Less Marketplace which sells other manufacturers quality high performance parts!