Yes. Kami Speed is an authorized Wilwood Engineering dealer sourced directly from Wilwood in Camarillo, California. Every caliper, rotor, brake kit, master cylinder, and brake line ships in original Wilwood packaging with full warranty documentation and tech support direct access. Wilwood's serial-numbered components and US manufacturing make counterfeiting rare, but gray-market and pulled-from-wreck parts do circulate at suspiciously low prices on auction sites. Buying from an authorized dealer keeps your warranty intact and gives you access to Wilwood's tech line if you have a fitment or sizing question.

Most in-stock Wilwood items — popular calipers, common rotor sizes, brake pads, master cylinders, and brake lines — ship within 1 to 3 business days from US warehousing. Complete big brake kits for popular platforms (Mustang, Camaro, WRX, Civic, S2000, Miata) are typically stocked. Less common application kits, made-to-order rotor combinations, and specialty hat configurations may have a 1 to 2 week lead time from Wilwood. We confirm exact availability and ETA at order placement.

Wilwood products carry the manufacturer's warranty against defects in materials and workmanship. Returns on unused, uninstalled brake components in original packaging are accepted within 30 days. Once calipers have been mounted, pads have been bedded in, or brake lines have been pressurized, components are no longer returnable — this is standard across the brake industry, since hydraulic surfaces and friction materials change on first use. Defective products are handled through Wilwood's warranty program, and Kami Speed processes RMA claims on your behalf.

Most Wilwood street/strip and bolt-on big brake kits are designed for street use and meet DOT requirements for brake line construction, pad compounds, and master cylinder pressure. However, Wilwood also produces race-only kits with non-DOT components (race pads, racing brake fluid, lightweight rotors without dust shields) that are intended for closed-course use only — these are clearly labeled in Wilwood's catalog. If you're building a street car, stick to Wilwood's street/strip lineup. If you're building a track car or have specific local emissions/inspection requirements, contact us before ordering and we'll confirm the right kit for your build and location.