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  • 3-1/2" Axle Tube Hole Size
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Pro Series 4-Link Kit with Billet Adjustable Shock Mounts

RJ-300020 | RJ-300021

Product Description

The Pro Series 4-Link Kit with Billet Adjustable Shock Mounts is a high quality kit designed to hold up to high horsepower.

Select your desired housing bracket style:
• Mild Steel - 3" axle tube hole size
• 4130 - 3-1/2" axle tube hole size

Kit includes:
• (4) Pro Series 1/4" thick 4130 chassis 4-link brackets
• (4) Pro Series 1/4" thick Mild Steel or 4130 housing 4-link brackets
• (4) 1-1/4" .095 4130 pro 4-link bars
• (4) 3/4"-16 LH & RH tube adapters
• (1) 1/2" x 3/4"-16 4130 Rod End Kit
• (2) 3/4" wide billet threaded shock mounts with 1/2"-20 grade 8 shock bolts
• 1/2" NAS 4-link bolt hardware

This kit features NAS bolts with MilSpec nuts. Close tolerance holes for the 1/2" NAS bolts provide considerably less bolt movement than competitors systems. Features .800" hole spacing instead of the normal 1" spacing to allow for a closer range of adjustment.

Please call to upgrade your entire kit with 1/8" doubler plates and longer NAS Bolts for increased strength and bracket longevity on higher horsepower cars.

During installation while mocking up and welding we recommend the use of grade 8 bolts with our 4-link jigs (available separately) to hold the brackets together in the correct positon. After all the welding is complete we recommend reaming the holes and and using our NAS 4-link bolt kit during final assembly for even less bolt movement. (Do not use a drill bit!)

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