Extreme Pro Series 4-Link Kit

Quarter-Max's Extreme Pro Series 4-Link Kit offers more strength and adjustability than our standard Pro Series kit.

For extra strength, this kit features our high quality 1-1/2 in.x.095 in. 4130 Pro Series 4-link bars.

The Quarter-Max Extreme Pro Series line of chassis and housing brackets feature a hole spacing of .625 in. to allow for a finer range of adjustment. Our brackets are manufactured in-house to high quality specifications with precise hole locations and smooth profiles.

Chassis brackets are available in 1/4 in. thick 4130. We offer 2 different styles of weld-on chassis brackets, which feature notches for 1-5/8 in. crossmembers. The center of the top of the crossmember to the center of the bottom crossmember is either:
• 13 in. notch spread
• 15 in. notch spread

With 16 holes of adjustment, these chassis brackets provide you with more adjustability than any fixed chassis bracket on the market.

Housing brackets are available in 1/4 in. 4130 with a 3-1/2 in. axle tube hole size. With 19 holes of adjustment, these housing brackets provide you with more adjustability than any bracket on the market.

1/8 in. thick 4130 upper and lower doubler plates for the chassis and housing brackets are included to increase the thickness around the holes to 3/8 in. for added strength and longevity.

This kit also features NAS bolts with MilSpec nuts. Close tolerance holes for the 1/2 in. NAS bolts provide a tight fitment and considerably less bolt movement than competitors systems.

Kit includes:
• (4) Extreme Pro Series chassis 4-link brackets with upper and lower doubler plates
• (4) Extreme Pro Series housing 4-link brackets with upper and lower doubler plates
• (4) 1-1/2 in.x.095 in. 4130 Pro Series 4-link bars
• (4) 3/4 in.-16 LH tube adapters
• (4) 3/4 in.-16 RH tube adapters
• (1) 1/2 in. bore x 3/4 in.-16 thread 4130 rod end kit
• (2) Pro Series threaded shock mounts
• 1/2 in. NAS 4-link bolt hardware

During installation while mocking up and welding, we recommend the use of grade 8 bolts with our 4-link jigs to hold the brackets together in the correct position. After all the welding is complete, we recommend reaming the holes using our 7 piece chucking reamer kit #RJ-219850. Do not use a drill bit!