Home/2003-04 Cobra Gears and Differential Parts WMS Gear Package for 8.8 Diff, Ford Racing 4.10 Gears, 1986-2009 Mustang $329.99 WMS Gear Package for 8.8 Diff, Ford Racing 3.73 Gears, 1986-2009 Mustang $349.99 WMS Gear Package for 8.8 Diff, Ford Racing 3.55 Gears, 1986-2009 Mustang $389.99 Ratech Solid pinion spacer with shims, Ford 8.8, 9in $20.70 Ratech Differential Rebuild kit, 79-09 Mustang 8.8 $129.88 Ratech pinion setting tool, Ford 8.8" diff $41.75 Motul Gear 300, 75W90 Gear oil, 1L $28.47 Mobil 1 Synthetic Gear Oil 75w90, .95L $21.04 Ford Performance Carbon Fibre Clutch Packs, 8.8 Mustang $206.49 Ford Performance 8.8 diff bearing kit - center bearings, seals and bolts $210.35 Ford Performance IRS 8.8 gear install kit - shims, seal, nut, bolts. Reg. $59.75 NOW! $35.29 Ford Performance Gears for 8.8, 4.10 ratio ring and pinion $269.98 Ford Performance Gears for 8.8, 3.73 ratio ring and pinion $289.00 Ford Performance Gears for 8.8, 3.55 ratio ring and pinion $299.98 Ford Performance 8.8 posi, 31 spline, carbon fibre clutches $359.99 Ford Performance IRS Diff. Girdle, 1999-04 Mustang Cobra $426.63 Detroit Tru Trac diff, 8.8" 31 spline $857.75