The Wilwood Forged Dynalite Pro Series rear kit 140-2118-BD is a complete rear disc brake package for a Big Ford new-style axle housing with a 2.50 inch offset. It combines forged Dynalite calipers with a drilled rotor and hat assembly, giving a drag, street performance, or track build a rear brake setup in place of a light-duty stock system. A cheaper rotor-and-pad swap rarely addresses the axle flange and offset, so this matched kit is the better choice when the rear brakes need to mount cleanly without improvised adapters.
Confirm your axle housing before ordering, because the flange and offset decide whether the kit bolts up. The manufacturer's instructions tell installers to verify that the kit matches the housing flange. Installation starts by raising the rear wheels, supporting the suspension on jack stands, and removing the original rear brakes. The caliper bracket mounts to the housing flange with the stock bolts, which the manufacturer's guidance says should get red Loctite 271 and be torqued to OEM specification. Every mounting bolt must fully engage its insert nut.
Plan on new brake lines, since OEM rubber hoses generally cannot be adapted to these calipers. Fill and bleed the system with Wilwood Hi-Temp 570 fluid or higher, and route lines clear of moving suspension and wheel components. Search terms this kit matches: big Ford new style rear disc brake kit, 2.50 offset rear brake conversion, forged Dynalite pro series rear kit, and drilled rotor rear brake upgrade.
No. The kit is built for the Big Ford new-style flange at a 2.50 offset. The manufacturer says to confirm the kit is the correct one for the axle housing flange before installation.
The manufacturer states that OEM rubber brake hoses generally cannot be adapted to Wilwood calipers, so plan on new lines.
The manufacturer's assembly instructions call for Wilwood Hi-Temp 570 grade fluid or higher.
This is an intermediate job that requires jack stands, a torque wrench, thread-locker, and access to the rear axle. Start by confirming the flange and offset match your housing. Mount the caliper bracket with the stock bolts and torque them to OEM specification with red Loctite 271 on the threads. Check that every bolt fully engages its insert nut. Replace the rubber hoses with new lines and route them away from moving parts. Bleed the system with Hi-Temp 570 or higher fluid.
