Strange Pro Series Lightweight Steel Spool Fits Ford 9″ with 40 Spline Axles Requires 3.250″ Bore Aftermarket Case

Application – Ford 9″ Description Pro Series Spool For 40 spline axles Fits 3.250″ bore aftermarket case Features • Machined from 4140 forged steel • Lightened to reduce rotating weight • Broached 40 spline with 45° pressure angle • Critical dimensions left oversize prior to heat treatment • Heat treated for further gains in strength • Finish machining after heat treat to bring surfaces within specifications • Designed and machined by Strange Engineering • Forged in the USA Weighs 7.95 lbs Lightweight Pro Series Steel Spools Carry A Limited Lifetime Warranty Related Components Spool Bearings For 3.250″ bore case…………………………….. D1590…