The all-new 4" 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" Pro Series Housing comes complete with 4" OD x 1/4" wall heat treated tubes, coupled with a wider shell that's now internally gusseted. Off-the-shelf at 68" OAL, working with both standard and mid-engine setups, the 4" Pro Series Housing is as versatile as it is tough. Our 4" Pro Series Housing also comes standard with our massive 2-1/4" aluminum filler cap & steel bung assembly, great for general gear inspection and filling.
Every 4" Pro Series Housing comes with third member ARP studs & nylock hex nuts, 2-1/4" fill bung & fill cap.
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