MR2Heaven Ultimate Wilwood REAR BIG Brake Kit - 1991-1998 MR2

All rotors we supply are from reputable manufacturers, suitable for MR2 track use. We utilize 1994-1998 Toyota Supra Twin Turbo front rotors and 2004-2011 Mazda RX8 front "Sport Suspension Spec" rotors for our kits. There are also many other companies that makes rotors for said cars so those would also work as well. Link to Full Rotor Part # Table

• Curved directional internal cooling vanes provide superior cooling and durability compared to straight vanes, resulting in 80-150F+ temperature reduction alone.
• A higher vane count generally provides a larger internal surface area for heat dissipation, ensuring more consistent cooling and fewer rotor hot spots. This leads to lower operating temperatures and a stronger, more uniform rotor. Over time, hot spots, warping, or distortion can cause brake pedal pulsation. Typically, economical rotors have 24-32 vanes, street performance rotors have up to 48, and race rotors boast 60-80 or more vanes.

MR2Heaven 2-Piece Rotors - Our 2-piece rotor solution, exclusively designed for our big brake kits, is not backwards compatible with Supra or RX-8 systems. This innovative solution is the result of extensive research, experience, 3D modeling, and refinement, involving over 83 rotor designs analyzed to optimize MR2's weight and driving dynamics. Our front and rear 2-piece rotors offer the same cooling surface area as full-sized rotors in a more compact design, achieved by using race-grade 65 curved internal cooling vanes—typically found in expensive race rotors. This 2-piece design improves on and overcomes the drawbacks of using off the shelf Supra/RX-8 rotors, such as wasted space, weight, and heavy center sections.

• Front rotor thickness increased by 1.25mm to 31.75mm, rear thickness decreased from 24.0mm to 23.5mm as part of optimization. They fully utilize the capabilities of the front Wilwood calipers. Meeting G3500 grade iron standards, these rotors feature black E-coating for added corrosion resistance and performance (excluding plain-style rotors).

• Factory-applied heat indication paint markers, valued at $150, are included at no extra cost on our 2-piece rotor offerings. The green paint transforms to white when rotor temperatures exceed 840°F, while the orange paint shifts to white at 1020°F. When rotor temperatures reach 1200°F, the red paint changes color.

Brake fade occurs when brakes operate outside their pad's temperature range, causing friction to decrease and brake pads to melt, leaving residue on rotors and leading to pedal pulsation.

HAWK, Wilwood and EBC pads are engineered, lab and track tested, solid and proven. First 2 are Made in USA. Wilwood Temperature/friction charts available see here (Wilwood pads), here (HAWK pads). EBC chart can be found here (EBC pads). Other brand pads such as Carbotech, PAGID, StopTech, Project Mu also works, but to simplify logistics, we only carry HAWK, Wilwood and EBC. General rule of thumb is OEM brake pads for sport cars are good for up to around 600F on small rotors before dropping off on friction.

Higher temperature pads come with drawbacks, higher the temp, the worse poor cold performance or high pitched hard squealing is common. Please don’t order BP-30 or BP-40 thinking it is cool when its not needed. For our kits, 99.9% of owners will not need over BP-20 at most

• EBC Red Stuff - Very consistent friction up to 800F before tapering off. Great for the streets as these are not track purposed, which is also good if you don't like squealing brakes. The go to pad if noise is an issue, BP-10 would be our next pad to recommend for low noise.
• HAWK High Performance Street - Good up to 750F-800F - Great for high performance street use with low wear. These may still be quite noisy when cold. If you have brake ducting/cooling set up, these pads will suffice for light duty track use
• HAWK HPS + - Good up to 850-900F – Same as above. Pads that are built for this temperature range are a bit noisy for people who are not used to using high performance pads, i.e, they may squeal lightly at every stop when cold. Goes away when warm.
• BP-10 High Performance Street/Track use **POPULAR - Great for up to 950-1050F. BP series pads are great. Great compromise, Cost effective, long life and are very consistent. Perfect for street and moderate/heavy duty track use. As expected with all high temperature pads, these will squeal a tiny bit when cold, can probably be heard up to 1-3 cars away when standing outside. Fortunately any braking noise does goes away completely after 1-2 stops like (60-20mph). We highly recommend these pads and they'll work for 95% of MR2 owners. Pair it with brake ducting and you'll be golden!
• BP-20 Streetable/Heavy duty track pad **POPULAR - Great for up to 1200-1250F - Just like BP-10s, offers great cold performance and consistent feel for street and track throughout the whole temperature range. Long lasting and inexpensive, all you'll ever need. Will take everything you can throw at it consistently lap after lap. Make sure you have some kind of brake ducting in place as it helps significantly with cooling. Only downside of BP-20 pads is increased squealing intensity when cold. As expected with this temperature range of pads, you can sometimes hear these pads 6-30+ cars away and it sounds similar to a train when they're cold. Goes away completely when warm with 1-2 60-20mph stops. Some may find this annoying, while some may enjoy the sounds. I don't drive my MR2 often and when i do, i'm pretty extreme and like to make a statement so i personally love these pads. Fortunately, switching out pads if needed on Wilwood calipers can be done within a minute per corner if you already have the wheels off.
• BP-30 - You don't need this but if you want it, we have it. Good for 1200-1450F. Not designed for street use, race only.
• BP-40 - Xtreme High Temp Racing Pad – You don't need this but we have it - RACE track use ONLY.

Wilwood Forged Superlite Calipers feature a lightweight, 4-piston design that's both budget-friendly and proven on the track. Manufactured in the USA, these calipers can be powder-coated by Wilwood in Black or Red or even custom colors for an additional $1400. Alternatively, you can order Gray and customize the color yourself. Replacing your stock calipers with these Wilwood calipers can save you approximately 14lbs in weight. Carefully selected to maintain brake bias on both Turbo and NA MR2 models, these calipers are a high-quality and stylish upgrade option.

Premium Brake Caliper Mounting Brackets are crafted from a single piece of CNC-machined 6061-T6 aerospace-grade aluminum, providing strength and durability while being one-third the weight of most mild steel alternatives. These brackets are hard-anodized for exceptional protection against extreme environments. In contrast, some MR2 sellers use outdated multi-piece steel brackets that are either bolted or welded together and painted black. While less expensive to manufacture, these brackets are three times heavier and can be unevenly welded. Furthermore, if their paint chips, they are susceptible to rust.

High-quality, US-made D.O.T. approved one-piece brake lines are crafted from premium PTFE cores, zinc-plated steel fittings, and stainless wire braided covers, all encased in a clear PVC outer layer for protection against chemicals, elements, and debris. These lines prevent swelling, expansion, and rubber deterioration commonly seen in stock OE lines. In contrast, some MR2 sellers use cheap, unbranded lines with multi-piece fittings, which are prone to leaks and deformation due to cost-cutting measures. Be aware of the potential risks associated with inferior products.

High-Quality Hardware Kit features heavy-duty Grade 12.9 black oxide bolts/screws, stainless steel and zinc-coated washers, and lock washers, all sourced from the reputable McMaster Carr. These components are designed to withstand harsh environments.

For Two-Piece Rotor Assembly, we use 18-8 stainless steel socket head cap screws and U.S. Military Standard 21042-5 self-locking "jet nuts" to secure the top hat to the rotors, eliminating the need for safety wire.

Brake Bias - Our front and rear kit, when combined, delivers brake bias dynamics that meet or surpass OE standards:

• With an OEM Non-Turbo Brake proportioning valve, our F&R kit performs exceptionally well with BP10 & BP20 pads, significantly improving OEM 1993+ Turbo Brake Bias curves. It achieves 60-63% front bias from 0.5 to 0.7G and maintains an ideal 63%-68% front bias from 0.7 up to 1.4G. This helps prevent rear wheel lock-ups as weight shifts to the car's front during hard braking.
• With an OEM Turbo Brake proportioning valve, our F&R kit performs decently with BP10 & BP20 pads. It maintains a stable 62-64% front bias and around 36% rear bias from 0.5 to 1.4G of deceleration, similar to the OEM 93T brake bias.

Disclaimer - These brake components are designed for off-road use only and should not be used on streets or highways. By ordering from us or using our supplied brake parts, you agree that we are not responsible for any damages, injuries, accidents, or deaths. All responsibility lies with you.

Be aware that inventory, pricing, and wait times for rotors have varied significantly in recent years, with some manufacturers increasing prices by up to 300% within a year. Some rotor brands even discontinued products or faced long stockouts. Our brake kit system offers over 11 types of rotors to choose from, including 6 custom-made variants, ensuring you have ample options for future maintenance and avoiding being without brake rotors or pads.