Though we’re big fans of drum brakes in the rear, we understand that rear discs brings some advantages, especially in track scenarios. But there’s a reason we like the stock brakes: the rear axle flexes. It flexes a lot. I don’t care if you have a Currie unit from a Sherman tank, the rear axles will flex. This has the effect of pushing the rotors (which are mounted to the axles) around within the caliper. So instead of having the pads gently riding the rotor, there’s a gap. This gap has to be filled when pushing the brake, which makes the whole system feel inconsistent and scary.
So what do guys do? They buy a bigger master (which moves more fluid at a lower pressure, resulting in even worse brake feel), they back it up with a brake booster (don’t get me started) and then they start asking about firewall reinforcements because they have to put so much effort into the brake pedal.
We want to use discs in the rear, so how do we overcome this problem? We opt for a floating caliper like the one found in the Wilwood D154 setup. The floating caliper effectively moves with the rear, minimizing the air gap that’s naturally created. Frankly, it’s the only rear setup we really like.
Wilwood’s D154 Rear Caliper Kit offers a direct bolt-on 2-piston replacement with a floating caliper design, helping to minimize pad knock back and improve brake feel. Forged billet aluminum bodies, stainless steel pistons, and competition style high-temperature seals put an end to the rust, bore pitting, and seal failures that plague the OE caliper design. D154 calipers provide low-maintenance performance and a huge weight savings with high temperature reliability for the street and track. D52 calipers mount in the stock location over stock rotors; use the original style OE D154 brake pads and an OE M10-1.5 banjo bolt brake line mounting. Calipers can be used with most wheels that clear the OE calipers.
For pads, we include Wilwood’s BP-20, which provides increased friction levels with extended temperature range over BP-10. BP-20 has a progressive response rate as pedal pressure and temperatures increase to provide confident, repeated stops and outstanding modulation characteristics. The unique metallic composite formulation provides an aggressive feel without the harsh noise, high rotor abrasion, and extreme dust levels associated with high metallic based compounds.