QA1 GM (K6145) +.500in Stud Lower Press-In Style Ball Joint

Ultimate ball joint. Adjustable press-in mounting. Stud has .5" extended length. For use in lower location on metric GM applications. QA1 offers its Ultimate Ball Joint in a Press-In Style for a variety of racing applications. A 100% owner rebuildable design, the Ultimate Ball Joint is a QA1 exclusive. This patented, self-lubricating ball joint is offered with multiple stud lengths, providing 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.

• Preload adjustable for bind-free operation
• Patented, self-lubricating design
• 100% owner rebuildable
• Multiple stud lengths

The QA1 QAP1210-209P Ultimate Ball Joint is a lower-location, press-in replacement designed for metric GM automotive and racing applications. Featuring a 0.500-inch extended stud, this ball joint helps accommodate suspension geometry changes and allows racers and builders to fine-tune roll center settings. Its adjustable press-in mounting design supports precise installation and setup for demanding suspension systems.
The patented QA1 Ultimate Ball Joint uses a self-lubricating design for smooth, bind-free operation. Infinite preload adjustment allows breakaway torque to be set as low as 0 ft.-lbs., helping deliver responsive suspension movement and consistent performance. Precision tolerance between the ball and race promotes even load distribution, while the precision-ground 52100 bearing steel race provides long service life and smooth operation.
Built for long-term serviceability, the QA1 QAP1210-209P is 100% owner rebuildable, with replaceable components available for economical maintenance. Preload adjustments can be made without removing the ball joint from the vehicle, making setup changes more convenient at the track or in the shop. This ball joint is compatible with lower-location metric GM applications, including select Pontiac Firebird models from 1977 through 1981. Professional installation and verification of suspension compatibility are recommended before use.

Features:

• Adjustable press-in mounting for lower-location metric GM applications

• 0.500-inch extended stud supports suspension geometry adjustments

• Preload adjustable for smooth, bind-free operation

• Patented self-lubricating design helps reduce friction and maintenance

• 100% owner rebuildable with replaceable components

• Precision-ground 52100 bearing steel race for durability and smooth operation

• Designed for roll center tuning and racing suspension applications

Fitment:
Chevrolet Camaro Base 1970
Chevrolet Camaro Base 1971
Chevrolet Camaro Base 1972
Chevrolet Camaro Base 1973
Chevrolet Camaro Base 1974
Chevrolet Camaro Base 1975
Chevrolet Camaro Base 1976
Chevrolet Camaro Base 1977
Chevrolet Camaro Base 1978
Chevrolet Camaro Base 1979
Chevrolet Camaro Base 1980
Chevrolet Camaro Base 1988
Chevrolet Camaro Base 1993
Chevrolet Camaro Base 1994
Chevrolet Camaro Base 1995
Chevrolet Camaro Base 1996
Chevrolet Camaro Base 1997
Chevrolet Camaro Base 1998
Chevrolet Camaro Base 1999
Chevrolet Camaro Base 2000
Chevrolet Camaro Base 2001
Chevrolet Camaro Berlinetta 1979
Chevrolet Camaro Berlinetta 1980
Chevrolet Camaro Berlinetta 1981
Chevrolet Camaro Berlinetta 1982
Chevrolet Camaro Berlinetta 1983
Chevrolet Camaro Berlinetta 1984
Chevrolet Camaro Berlinetta 1985
Chevrolet Camaro Berlinetta 1986
Chevrolet Camaro Indianapolis 500 Pace Car 1993
Chevrolet Camaro Iroc-Z 1985
Chevrolet Camaro Iroc-Z 1986
Chevrolet Camaro Iroc-Z 1987
Chevrolet Camaro Iroc-Z 1988
Chevrolet Camaro Iroc-Z 1989
Chevrolet Camaro Iroc-Z 1990
Chevrolet Camaro LT 1973
Chevrolet Camaro LT 1974
Chevrolet Camaro LT 1975
Chevrolet Camaro LT 1976
Chevrolet Camaro LT 1977
Chevrolet Camaro LT 1978
Chevrolet Camaro LT 1987
Chevrolet Camaro LT Rally Sport 1976
Chevrolet Camaro LT Rally Sport 1977
Chevrolet Camaro LT Rally Sport 1978
Chevrolet Camaro Rally Sport 1976
Chevrolet Camaro Rally Sport 1977
Chevrolet Camaro Rally Sport 1978
Chevrolet Camaro Rally Sport 1979
Chevrolet Camaro Rally Sport 1980
Chevrolet Camaro RS 1970
Chevrolet Camaro RS 1971
Chevrolet Camaro RS 1972
Chevrolet Camaro RS 1973
Chevrolet Camaro RS 1975
Chevrolet Camaro RS 1989
Chevrolet Camaro RS 1990
Chevrolet Camaro RS 1991
Chevrolet Camaro RS 1992
Chevrolet Camaro RS 1996
Chevrolet Camaro RS 1997
Chevrolet Camaro RS Heritage Edition 1992
Chevrolet Camaro Sport 1981
Chevrolet Camaro Sport 1982
Chevrolet Camaro Sport 1983
Chevrolet Camaro Sport 1984
Chevrolet Camaro Sport 1985
Chevrolet Camaro Sport 1986
Chevrolet Camaro Sport 1987
Chevrolet Camaro SS 1970
Chevrolet Camaro SS 1971
Chevrolet Camaro SS 1972
Chevrolet Camaro Z28 1970
Chevrolet Camaro Z28 1971
Chevrolet Camaro Z28 1972
Chevrolet Camaro Z28 1973
Chevrolet Camaro Z28 1974
Chevrolet Camaro Z28 1977
Chevrolet Camaro Z28 1978
Chevrolet Camaro Z28 1979
Chevrolet Camaro Z28 1980
Chevrolet Camaro Z28 1981
Chevrolet Camaro Z28 1982
Chevrolet Camaro Z28 1983
Chevrolet Camaro Z28 1984
Chevrolet Camaro Z28 1985
Chevrolet Camaro Z28 1986
Chevrolet Camaro Z28 1987
Chevrolet Camaro Z28 1991
Chevrolet Camaro Z28 1992
Chevrolet Camaro Z28 1993
Chevrolet Camaro Z28 1994
Chevrolet Camaro Z28 1995
Chevrolet Camaro Z28 1996
Chevrolet Camaro Z28 1997
Chevrolet Camaro Z28 1998
Chevrolet Camaro Z28 1999
Chevrolet Camaro Z28 2000
Chevrolet Camaro Z28 2001
Chevrolet Camaro Z28 Heritage Edition 1992
Chevrolet Camaro Z28 Indianapolis 500 Pace Car 1982
Chevrolet Camaro Z28 SS 1998
Chevrolet Camaro Z28 SS 1999
Chevrolet Camaro Z28 SS 2000
Chevrolet Camaro Z28 SS 2001
Chevrolet Chevelle Deluxe 1973
Chevrolet Chevelle SS 1973
Chevrolet Impala Base 1971
Chevrolet Impala Base 1972
Chevrolet Impala Base 1973
Chevrolet Impala Base 1974
Chevrolet Impala Base 1975
Chevrolet Impala Base 1976
Chevrolet Impala Base 1977
Chevrolet Impala Base 1978
Chevrolet Impala Base 1979
Chevrolet Impala Base 1980
Chevrolet Impala Base 1981
Chevrolet Impala Base 1982
Chevrolet Impala Base 1983
Chevrolet Impala Base 1984
Chevrolet Impala Base 1985
Chevrolet Impala Custom 1975
Chevrolet Impala Custom 1976
Chevrolet Impala Custom 1977
Chevrolet Impala Custom Landau 1976
Chevrolet Impala Estate 1981
Chevrolet Impala Estate 1982
Chevrolet Impala Landau 1977
Chevrolet Impala Landau 1978
Chevrolet Impala Landau 1979
Chevrolet Impala S 1976
Chevrolet Impala Sport 1975
Chevrolet Impala Sport 1976
Chevrolet Impala Sport 1979
Chevrolet Impala Sport 1980
Chevrolet Impala SS 1994
Chevrolet Impala SS 1995
Chevrolet Impala SS 1996
Chevrolet Laguna Base 1973
Chevrolet Laguna Estate 1973
Chevrolet Malibu Base 1973
Chevrolet Malibu Base 1978
Chevrolet Malibu Base 1979
Chevrolet Malibu Base 1980
Chevrolet Malibu Base 1981
Chevrolet Malibu Classic 1978
Chevrolet Malibu Classic 1979
Chevrolet Malibu Classic 1980
Chevrolet Malibu Classic 1981
Chevrolet Malibu Classic 1982
Chevrolet Malibu Classic 1983
Chevrolet Malibu Classic Estate 1978
Chevrolet Malibu Classic Estate 1979
Chevrolet Malibu Classic Estate 1980
Chevrolet Malibu Classic Landau 1978
Chevrolet Malibu Classic Landau 1979
Chevrolet Malibu Classic Landau 1980
Chevrolet Malibu Classic Landau 1981
Chevrolet Malibu Classic Sport 1979
Chevrolet Malibu Classic Sport 1980
Chevrolet Malibu Estate 1973
Chevrolet Malibu Estate 1979
Chevrolet Malibu Estate 1980
Chevrolet Malibu Landau 1979
Chevrolet Malibu Police 1979
Chevrolet Malibu Sport 1979
Chevrolet Malibu Sport 1980
Chevrolet Monte Carlo Base 1973
Chevrolet Monte Carlo Base 1974
Chevrolet Monte Carlo Base 1979
Chevrolet Monte Carlo Base 1981
Chevrolet Monte Carlo Base 1982
Chevrolet Monte Carlo Base 1983
Chevrolet Monte Carlo Base 1984
Chevrolet Monte Carlo Base 1985
Chevrolet Monte Carlo Base 1986
Chevrolet Monte Carlo Base 1987
Chevrolet Monte Carlo Base 1988
Chevrolet Monte Carlo CL 1983
Chevrolet Monte Carlo Landau 1973
Chevrolet Monte Carlo Landau 1974
Chevrolet Monte Carlo Landau 1976
Chevrolet Monte Carlo Landau 1978
Chevrolet Monte Carlo Landau 1979
Chevrolet Monte Carlo Landau 1980
Chevrolet Monte Carlo Landau 1981
Chevrolet Monte Carlo LS 1986
Chevrolet Monte Carlo LS 1987
Chevrolet Monte Carlo LS 1988
Chevrolet Monte Carlo S 1973
Chevrolet Monte Carlo S 1975
Chevrolet Monte Carlo S 1976
Chevrolet Monte Carlo S 1977
Chevrolet Monte Carlo Sport 1978
Chevrolet Monte Carlo Sport 1980
Chevrolet Monte Carlo SS 1983
Chevrolet Monte Carlo SS 1984
Chevrolet Monte Carlo SS 1985
Chevrolet Monte Carlo SS 1986
Chevrolet Monte Carlo SS 1987
Chevrolet Monte Carlo SS 1988
Chevrolet Nova Base 1975
Chevrolet Nova Base 1976
Chevrolet Nova Base 1977
Chevrolet Nova Base 1978
Chevrolet Nova Base 1979
Chevrolet Nova Concours 1976
Chevrolet Nova Concours 1977
Chevrolet Nova Custom 1975
Chevrolet Nova Custom 1978
Chevrolet Nova Custom 1979
Chevrolet Nova LN 1975
Chevrolet Nova Police 1975
Chevrolet Nova Police 1976
Chevrolet Nova Police 1977
Chevrolet Nova Police 1978
Chevrolet Nova Rally 1977
Chevrolet Nova Rally 1978
Chevrolet Nova Rally 1979
Chevrolet Nova SS 1976
Pontiac Firebird Base 1970
Pontiac Firebird Base 1971
Pontiac Firebird Base 1972
Pontiac Firebird Base 1973
Pontiac Firebird Base 1974
Pontiac Firebird Base 1975
Pontiac Firebird Base 1976
Pontiac Firebird Base 1977
Pontiac Firebird Base 1978
Pontiac Firebird Base 1979
Pontiac Firebird Base 1980
Pontiac Firebird Base 1981
Pontiac Firebird Base 1982
Pontiac Firebird Base 1983
Pontiac Firebird Base 1984
Pontiac Firebird Base 1985
Pontiac Firebird Base 1986
Pontiac Firebird Base 1987
Pontiac Firebird Base 1988
Pontiac Firebird Base 1989
Pontiac Firebird Base 1990
Pontiac Firebird Base 1991
Pontiac Firebird Base 1992
Pontiac Firebird Base 1993
Pontiac Firebird Base 1994
Pontiac Firebird Base 1995
Pontiac Firebird Base 1996
Pontiac Firebird Base 1997
Pontiac Firebird Base 1998
Pontiac Firebird Base 1999
Pontiac Firebird Base 2000
Pontiac Firebird Base 2001
Pontiac Firebird Base 2002
Pontiac Firebird Esprit 1970
Pontiac Firebird Esprit 1971
Pontiac Firebird Esprit 1972
Pontiac Firebird Esprit 1973
Pontiac Firebird Esprit 1974
Pontiac Firebird Esprit 1975
Pontiac Firebird Esprit 1976
Pontiac Firebird Esprit 1977
Pontiac Firebird Esprit 1978
Pontiac Firebird Esprit 1979
Pontiac Firebird Esprit 1980
Pontiac Firebird Esprit 1981
Pontiac Firebird Formula 1970
Pontiac Firebird Formula 1971
Pontiac Firebird Formula 1972
Pontiac Firebird Formula 1973
Pontiac Firebird Formula 1974
Pontiac Firebird Formula 1975
Pontiac Firebird Formula 1976
Pontiac Firebird Formula 1977
Pontiac Firebird Formula 1978
Pontiac Firebird Formula 1979
Pontiac Firebird Formula 1980
Pontiac Firebird Formula 1981
Pontiac Firebird Formula 1989
Pontiac Firebird Formula 1990
Pontiac Firebird Formula 1991
Pontiac Firebird Formula 1992
Pontiac Firebird Formula 1993
Pontiac Firebird Formula 1994
Pontiac Firebird Formula 1995
Pontiac Firebird Formula 1996
Pontiac Firebird Formula 1997
Pontiac Firebird Formula 1998
Pontiac Firebird Formula 1999
Pontiac Firebird Formula 2000
Pontiac Firebird Formula 2001
Pontiac Firebird Formula 2002
Pontiac Firebird S/E 1982
Pontiac Firebird S/E 1983
Pontiac Firebird S/E 1984
Pontiac Firebird S/E 1985
Pontiac Firebird S/E 1986
Pontiac Firebird Trans Am 1970
Pontiac Firebird Trans Am 1971
Pontiac Firebird Trans Am 1972
Pontiac Firebird Trans Am 1973
Pontiac Firebird Trans Am 1974
Pontiac Firebird Trans Am 1975
Pontiac Firebird Trans Am 1976
Pontiac Firebird Trans Am 1977
Pontiac Firebird Trans Am 1978
Pontiac Firebird Trans Am 1979
Pontiac Firebird Trans Am 1980
Pontiac Firebird Trans Am 1981
Pontiac Firebird Trans Am 1982
Pontiac Firebird Trans Am 1983
Pontiac Firebird Trans Am 1984
Pontiac Firebird Trans Am 1985
Pontiac Firebird Trans Am 1986
Pontiac Firebird Trans Am 1987
Pontiac Firebird Trans Am 1988
Pontiac Firebird Trans Am 1989
Pontiac Firebird Trans Am 1990
Pontiac Firebird Trans Am 1991
Pontiac Firebird Trans Am 1992
Pontiac Firebird Trans Am 1993
Pontiac Firebird Trans Am 1994
Pontiac Firebird Trans Am 1995
Pontiac Firebird Trans Am 1996
Pontiac Firebird Trans Am 1997
Pontiac Firebird Trans Am 1998
Pontiac Firebird Trans Am 1999
Pontiac Firebird Trans Am 2000
Pontiac Firebird Trans Am 2001
Pontiac Firebird Trans Am 2002
Pontiac Firebird Trans Am GT 1994
Pontiac Firebird Trans Am GTA 1989
Pontiac Firebird Trans Am GTA 1990
Pontiac Firebird Trans Am GTA 1991
Pontiac Firebird Trans Am GTA 1992
Pontiac Firebird Trans Am GTA SE 1989