Project Mu Suspension Ball Joint
Project Mu: Japan's Premier Brake Performance Brand
Project Mu Co., Ltd. is one of the most respected names in high-performance braking. Founded in 1988 and headquartered in Japan, the company built its reputation through relentless research and development, a chemistry-first approach to friction materials, and an unwavering commitment to safety under the most demanding conditions.
From the earliest days, Project Mu set its sights on motorsport as the ultimate proving ground. The brand's products have been trusted by teams competing in Super GT, the World Rally Championship, Formula Drift, D1 Grand Prix, and even the grueling Tokachi 24-hour and Bathurst 12-hour endurance races — events where consistent brake performance over an entire race distance is non-negotiable. That race-proven technology then flows directly into their street-performance lineup, giving everyday drivers access to the same engineering philosophy that wins championships.
A Complete Brake System Philosophy
What distinguishes Project Mu from many competitors is its holistic approach to braking. Rather than producing standalone components, the brand engineers each part of the system to work in harmony. The flagship disc brake pad lineup spans an extraordinary range of compounds — from the approachable BESTOP and NS-C street pads, through the versatile HC+ and B SPEC sport compounds, all the way up to the RACING-N1, RACING777, and RACING999 pads developed for circuit and competition use. Each compound is tuned not just for raw stopping power, but for pedal feel, consistency across a broad temperature range, and fade resistance — qualities that matter as much on a mountain road as on a racetrack.
Complementing the pads, Project Mu's disc brake rotors are machined from high-quality FC cast iron, engineered to deliver stable braking, superior cooling efficiency, and improved crack resistance. The SCR, SCR-PRO, SCR-GT, and SCR Pure Plus6 rotor lines are purpose-designed for high braking performance, offering drivers a matched upgrade when they step up their pad compound.
No high-performance brake system is complete without the right fluid. Project Mu's brake fluid — most notably the G-four 335 — is formulated with an exceptionally high boiling point to resist vapor lock under sustained hard braking. A clever color-change indicator even tells the driver when it's time for a fresh fill, making fluid maintenance straightforward even on dedicated track cars.
For drivers who push their cars in drifting or gymkhana, Project Mu also offers dedicated parking brake shoes. Lines like the Sports Rear Shoe, D1 spec Inner Shoe, and the COMP-B for Gymkhana Inner Shoe are engineered specifically to handle the aggressive, repeated use that handbrake-heavy driving disciplines demand — a testament to how thoroughly Project Mu covers the needs of performance driving enthusiasts.
Rounding out the ecosystem, Project Mu's accessories lineup includes items like the brake master cylinder reservoir cap, part of a broader range of precision-fit ancillary components designed to complement their core brake system products.
Why Enthusiasts Choose Project Mu
Whether you are building a daily driver, a weekend track weapon, or a full competition car, Project Mu's catalog covers an exceptional breadth of applications — including Japanese domestic market vehicles, European makes, and purpose-built race machinery. The brand's catalog spans street-friendly OEM-replacement solutions all the way to top-tier race compounds, making it easy to find exactly the right level of performance for any build or budget.