Spidertrax 4" Pro Series Axle Housing spidertrax Can be custom bored (up

Can be custom bored (up to 3-5/8") using the fixturing ring machined on the "C"

This kit is designed to fit LS engines with F-Body belt lines

Bolt holes are sized for #10 hardware

4975 Tube Size 3-1/2"

Spidertrax 4" Pro Series Axle Housing spidertrax Can be custom bored (upThe 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