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" .095" 4130 Pro Series 4-link bars.
The Quarter-Max Extreme Pro Series line of chassis and housing brackets feature a hole spacing of .625" 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" thick 4130. We offer 2 different styles of weld-on chassis brackets, which feature notches for 1-5/8" crossmembers. The center of the top of the crossmember to the center of the bottom crossmember is either:
• 13" notch spread
• 15" 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" 4130 with a 3-1/2" 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" 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" for added strength and longevity.
This kit also features NAS bolts with MilSpec nuts. Close tolerance holes for the 1/2" NAS bolts provide a tight fitment and considerably less bolt movement than competitors systems.
• (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" .095" 4130 Pro Series 4-link bars
• (4) 3/4"-16 LH tube adapters
• (4) 3/4"-16 RH tube adapters
• (1) 1/2" bore x 3/4"-16 thread 4130 rod end kit
• (2) Pro Series threaded shock mounts
• 1/2" 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!
Purchased one of these kits for a customer for a new car being built. This is one of the very few kits that give you unlimited adjustability and is worth the cost. The quality of the pieces are as good as you can get. I rate the people at Quarter Max and especially Rickie Jones as top notch and would recommend everything they make..