Front 14in 6 Piston W6A Big Brake Kit for the Lexus GS300, GS400 and GS430
This kit includes everything (except brake fluid, Teflon tape and tools) to make this a bolt on kit.
This is our Lexus GS300, GS400 and GS430 Front 6 Piston W6A 13 inch Wilwood brake kit. This kit includes the following:
-2 Wilwood, W6A radial mount calipers in Black.
-2 Wilwood, 14.25" dia, 1.25" thick, Spec 37 Rotors, (directional, curved vane) Black E-coated. (Wilwoods special Mil-Spec finish they do exclusively for Arizona Performance on all of our rotors).
-1 Set of (4 pads) BP-10's. (others available, see options a checkout)
-2 6061-T6 Radial mount caliper brackets, with helicoil threaded inserts.
-2 Rotor hats, billet aluminum black anodized rotor hats, (all fasteners installed and torqued.)
-4 7/16-20 Zinc Plated Grade 8 SHCS (Caliper Bolts/studs)
-4 7/16" Flat Washers (Caliper Bracket)
-4 7/16" Lock Washers (Caliper)
-4 M12x1 Zinc Plated Grade 10.9 SHCS (Caliper Bracket)
-4 M12x1 Bright Zinc Grade 10.9 Hex Nuts (Caliper Bracket)
-4 M12 Lock Washers Bright Zinc Plated (Caliper Bracket)
-4 7/16 Thin Shim Washers, Zinc Plated (Caliper or Bracket), optional at installation, see instructions.
-16 5/16-18 Grade 8, Zinc Plated SHCS (Rotor Bolts)
-16 5/16 Lock Washers Bright Zinc Plated (Rotor Bolts)
-2 Brake line assemblies, (see details below)
The only thing you will need to complete the install on this kit is, Brake fluid, Teflon tape, and Tools.
Our kits are the product of years of racing experience. We selected the best bang for the buck when it comes to the Caliper and the Rotors, and have sourced, made or plated the very best for all of our other components. We have paid close attention to every detail to ensure they fit perfectly. We've received numerous calls from shops commenting on the quality and ease of installation.
Wilwood's massive W6A caliper uses a pad that provides almost 35% more surface area than the FSL6R and FSLI. This caliper has much of the same proven technology but adds the feature of a pad with huge surface area.
The W6A forged six piston caliper delivers heavy duty stopping power for the road or track. The W6A body is the product of FEA computer design and stress flow forging technology. FEA technology allows the designer to test the prototype in a computer environment to determine the optimal structural design within the dimensional parameters of the component. Stress flow forging produces a part with the internal grain structure of the metal aligned in the direction of the flow of the body contour. The results are a caliper with superior clamping efficiency and ultimate strength against fatigue, stresses, and distortion under load.
This W6A caliper is a solid step above the FSL6R calipers. Many customers purchase the biggest brake we make for looks, many for racing. We often receive calls from customers on their way from the track, one of these calls was from a long time customer (who over the years had purchased several sets of brakes from us) but he had never (until that point) seriously, pushed the limits of the brakes. He was extremely excited, and had explained "The entire car felt like it was lowering itself, like it hunkered down and suctioned itself to the track." He said he had never experienced a car that stopped that quickly. He also carried on about how he was able to do it over and over, and that he would never have been able to do that with factory brakes. ROTORS:
This kit like all of our others, features directional curved vane rotors. The difference with these is, Wilwood has developed a unique vane profile that decreases weight, increases rigidity, and surface area, for the most cooling capacity. High performance braking is all about thermal mass. The greater the thermal mass, the better your brakes will work with respect to the rotors. We use Wilwood's race proven Spec 37 long grain proprietary alloy, cast iron rotors. Spec 37 rotors enjoy a superior thermal stability and have outperformed all other rotor brands with the longest wear and truest running. These are truly the finest and best performing racing rotors ever built. Do not confuse these with factory replacement or drilled and slotted rotors that are substandard aftermarket castings cast made of who-knows-what kind of material. Any factory sized replacement rotor will heat soak just as fast or faster (if its drilled) and boil the brake fluid when used at high speeds. Look for our FAQ for more details on why aftermarket replacement rotors don't work for racing. PADS:
We sell Wilwoods BP-10 compound pads standard with all of our kits. Other pads are available from us, just look for the options at checkout. We have been in business for quite a while, and if you are an existing customer, we will beat anybody's prices on brake pads and replacement rotors, when and if you need them in the future. We recommend you start with the BP-10 pads. There are multiple reasons,
1. We would like to know how the BP-10's performed for you, as a measure to advise on your next set of pads.
2. The rotors are not cheap, and pads that are too aggressive for your style of driving will chew up the rotors much faster than necessary. With more aggressive pads, if they are not up to the proper operating temperature they will just destroy your rotors.
3. Pads that are too aggressive for your style of driving have several characteristics that are decidedly NOT for street driving. The more aggressive racing pads can make an incredible amount of noise if not up to temp, also the low temp performance will definitely surprise you as they need quite a bit more pressure to work when cold. Think of the first stop sign after you pull out of the garage.
4. BP-10's really are great pads, and perfectly suited for most driving and racing up to and over 150 mph. We have had a few customers over-use or consume these pads in a 3-4 months, but not all of us race 99 minute enduros every other weekend.BRAKE LINES:
All of our brake lines feature a tough clear plastic lining to resist wear to other near-by components, and permanent strain relief fittings on each end where the braided stainless steel line terminate into the AN-3 swivel fitting on each end. We include a -3 X 1/8-27 NPT male fitting, designed to fit perfectly into the back of each caliper, at the chassis end, we have a Toyota specific bulkhead connector designed to fit in the factory chassis mount perfectly. They are designed to work with the factory spring-loaded C-clip on one end, and the factory (pickle fork shaped) retainer on the other end to provide a factory fit and finish, and for ease of removal for servicing and installation.
The Two lines in this kit are specifically matched to the vehicle they are installed on. If applicable they include brake line guides that route and retain the brake line through the original factory retainers and hardline attach mounts. Just give a good tug to reposition the grommets and fittings at installation, and after a period of time the grommets will take a set and become very difficult to reposition.
Each brake line assembly include the following fittings:
2 Fittings to attach the line to the Wilwood calipers (-3 X 1/8-27 NPT fittings).
2 Custom brake lines specifically matched to your vehicle.
We have thousands of race miles on our brake kits (Road Race, SCCA, Ultra 4, BITD, Baja 1000, Baja 500) and a close relationship with our racers. We will be glad to share set up tips, and lessons learned. In the off-road community some of our racers have over 6 (4+ hour) races on one set of pads, and the rotors are nowhere near being used up. Do not mistake these as slightly better than the stock brakes, they are designed for racing, and happen to work well on the street. The performance of these brakes will blow you away. You will be able to race anyone way deeper into the corner than you ever imagined and laugh with confidence as you out brake them corner after corner.
Feel free to call us if you have any questions about race setup, bedding the brakes, installation or pad selection.