The all-new 4" (101.6mm) Pro Series Housing is our strongest Spider 9 housing yet, delivering a level of quality and performance that is untouched in the industry. Building on the platform of our original Spider 9 housing, the 4" (101.6mm) Pro Series Housing comes complete with 4" (101.6mm) using a Chromoly construction and OD x 1/4" wall heat treated tubes, coupled with a wider shell that's now internally gusseted. Off-the-shelf at 68" (1727.2mm) OAL, working with both standard and mid-engine setups, the 4" (101.6mm) Pro Series Housing is as versatile as it is tough.
This is the same rear housing that has powered Loren Healy's Red Dragon Ultra4 racer to record-breaking 1st place finishes. If you're looking to take your racing to an all-new level, this is the housing for you.
Every 4" (101.6mm) Pro Series Housing comes with third member ARP studs & nylock hex nuts. Fill bungs and caps are sold separately.
Overview
Strong
Constructed out of 4130 chromoly steel, using a 3/8" (9.525mm) thick face plate, 1/4" (6.35mm) thick shell, massive heat treated 4" (101.6mm) x 1/4" (6.35mm) wall axle tubes, and two internal shell gussets, all while fitting both 9" (228.6mm) & 10" (254mm) gears. Get ready to go fast, get ready to win.
Secure
Adding integrity to the housing centre section was our top priority. This provides not just added strength, but making the centre more ridged helps keep those third member nylocks tight as well. Wider shell, internal gussets, ARP studs... our most secure housing yet.
Sexy
It's one thing to have the strongest housing ever built, but why not make it the sexiest as well. All 4" (101.6mm) Pro Series Housings are welded inside & out, and tig welded from tube to shell. Not only does this look great, it ensures all welds are race ready.
Complete
All 4" (101.6mm) Pro Series Housings are precision machined for genuine ARP third member studs, included with every order. Plus, at 68" (1727.2mm) in length, this off-the-shelf housing works for almost any racing application, front or rear. One housing, with everything you need.
