IMCA Spec Stock Car Upper Control Arm and AFCO LF Ball Joint Ext

Control Arm

IMCA rules allow the Stock Car class to use spec tubular upper control arms. The stock stamped steel arms are getting hard to find and dont have the strength of these tubular arms. These A-arms bolt to your stock mounts and accept stock ball joints. These control arms have a 1/4" thick steel plate where the ball joint bolts in. Fits 1978-87 mid-size GM Metric chassis.

• Steel construction
• 1" tube diameter, 0.092 wall
• Steel cross shaft
• Bolts to stock 1978-87 Metric mounts (6-7/8" center-to-center)
• Greaseable steel bushings
• Accepts stock K5208 style Metric ball joints
• IMCA Approved stickers
• Available for right (passenger side) or left (drivers side)
• Right arm length is 8"
• Left arm length is 8.5"

Use with mount plate 916-34312.

 

Low Friction Ball Joint

AFCO Low Friction Ball Joints are designed with 2 ft. lbs. of resistance, the force required to move the stud of the ball joint.  Compare this with standard replacement joints, with as high as 50 ft. lbs. of resistance.  A difference you can feel!  It is critical to handling that suspension components be as free as possible to move.  Low friction ball joints allow the suspension to give rather than allowing the tire to bounce over rough surfaces.  Low tire pressures magnify the need to minimize friction in the suspension.

• Precision machined to tight tolerances, providing consistent resistance throughout the travel of the ball joint to deliver consistent performance
• Improves weight transfer
• Frees up suspension for more consistent, repeatable chassis tuning
• Removes suspension rigidity and allows shock and spring to have more precise wheel control
• Adjustments are controlled more effectively by the shock and spring instead of the tire which improves traction
• Provides more accurate set-ups during vehicle scaling
• Meets or exceeds standard ball joint strength
• Stock appearing
• Lower input steering efforts and faster steering wheel return
• Moog type K5208 + 1/2" length