Upgrade every refuel with the MMX Performance Billet Fuel Cap - a small detail that delivers a premium feel every time you open the filler flap. This billet fuel filler cap is precision-machined from solid 6061 aerospace-grade aluminum, then hand-polished and finished in a durable gloss Midnight Black anodizing with a laser-etched MMX logo.

Designed to replace the factory plastic cap, it closes with a satisfying engineered click while retaining full OEM functionality. The cap fits securely into the factory holder during refueling and includes a new rubber O-ring seal, locating tether, and an integrated pressure relief valve to maintain proper fuel tank pressure.

Each of our billet fuel filler caps is CNC-machined using advanced 5-axis technology for a precise fit and long-lasting finish that won’t fade or degrade over time.

One of the simplest - and most rewarding - upgrades you can make to your 1997+ BMW, MINI Cooper, or Toyota A90 Supra.

Insist on an MMX Performance Billet Fuel Cap at your next refuel.