Collection: Turblown Collection

Turblown Engineering builds hard-to-find billet and cast components for the rotary community — and J-Spec Garage stocks them alongside the largest RaceOnly catalog in the US. Purpose-built for the Mazda RX-7, Turblown's lineup includes FD3S cast upper intake manifolds, throttle-body elbows, baffled oil filler necks, oil pans, stud kits, and drive-by-wire conversion adapters — the parts that make a serious 13B or 13B-REW build come together.

Whether you're assembling a street-ported FD or a high-horsepower bridgeport, these are components no big-box retailer carries. Fast US shipping, price match guaranteed.

New to the rotary? Start with What Is the 13B-REW? Shop Turblown Engineering below.