Calipers:

Ultimately after looking at what was available and fitments etc. We selected Wilwood as our caliper! Their Forged Superlites radial calipers are 4 piston flow-forged from aluminum alloy billets. Flow forging aligns the metal grain structure which eliminates stresses and interruptions to the grain structure that occur from machining directly from block billet.

The piston sizes are such that the bias shifts 5% rearward for optimum braking! We’ve been doing this with with different compound pads for years to get the bias correct. Now we are baking it into the system!

These Calipers has stainless steel pistons standard to reduce thermal transfer to the fluid from the pad. Additionally, they have anti-knockback springs to keep the pads close to the disc on track!

The crossover tubes are internally machined into the calipers which prevents track debris from causing damage. Lastly, there are 2 piece bleed screws on each side AND each end to make bleeding the brakes super easy and fast.

Brackets:

We’ve designed our own brackets with extensive Finite Element Analysis (FEA) for stress. We’ve designed them to have FOS (Factor of Safety) well over 1 so that they are the strongest brackets available anywhere! The front brackets use the same Exotic Aerospace 7075-T7351 we use on our uprights. They have stainless steel threaded inserts so they can be used and re-used for a long time.

Hoses and hardware:
Our hoses are stainless braided hoses custom-fit for the Lotus application. Caliper bolts are ARP Polished Stainless 12 pt bolts.

System and Modularity:

Front-Only:

4 Piston Caliper (Small Piston) Wilwood Forged Superlight weight calipers

BWR front caliper brackets(unless you already have our Ultimate Uprights)

Hoses, fittings, bolts, and Wilwood Street/Track Pads.

5% brake bias shift to the rear.

Can upgrade to full system later!

Front and Rear

4 Piston Caliper (Large Piston) Wilwood Forged Superlight weight calipers

BWR front caliper brackets(unless you already have our Ultimate Uprights)

4 Piston Caliper (Small Piston) Wilwood Forged Superlight weight calipers

BWR Rear caliper brackets

Hoses, fittings, bolts, and Wilwood Street/Track Pads.

5% brake bias shift to the rear.

Notice if you start with the Front only, you can move those calipers to the rear later and just get the larger piston front calipers later!

Parking brake

We mount the caliper on the front side of the rotor so you can just leave your rear caliper in place for parking brake duties if you wish.

For cars and drivers, you may choose to just remove the stock rear caliper altogether. It is heavy and you can put the car in gear vs using the brake.