13B Rotary Engine for Sale, JDM Mazda RX-7 1.3L Twin-Rotor (13B-REW)

Rotary heads know exactly what they're after, and it's not another piston engine pretending to be interesting.

If you're hunting for a 13B engine for sale in excellent condition, you're in the right spot. This is a genuine JDM Mazda 13B-REW, pulled from a low-mileage RX-7 in Japan. We check it over here in our Orlando warehouse before it ships, so you're not rolling the dice on a random rotary engine from an unknown seller.

Why the 13B Rotary Is Legendary

There's nothing else quite like a Wankel rotary engine. Instead of pistons pumping up and down, the 13B spins a pair of triangular rotors inside oval housings, and that spinning motion is what makes this engine rev so freely and sound so different from anything else on the road. It's a Mazda rotary engine through and through, born from decades of Mazda refusing to give up on rotary technology when everyone else moved on.

The 13B-REW version, found in the third-generation RX-7, adds sequential twin turbos to the mix. A small primary turbo spools early for quick response, then a larger secondary turbo kicks in once the RPMs climb, giving you a smooth, rolling wave of boost instead of one big hit. It's a clever setup, and it's a big reason this rotary engine still has such a devoted following decades later.

The Ultimate Rotary Swap Foundation

This 13B rotary engine isn't limited to RX-7 restorations. It's also a popular pick for builders who want something genuinely different for a swap project.

Fitment includes:

•          Mazda RX-7 (FD3S chassis)

•          Popular rotary swap builds

Rotary swaps come with their own quirks, from mounting to cooling to fuel setup. If you're not sure what your project needs, call us before you buy. We'd rather help you plan it right the first time.

13B Rotary + Transmission Combo Setup

Most RX-7 builds pair this engine with its matching gearbox, and bundling both together just makes sense. We can pair this 13B-REW with an RX-7 5-speed transmission, packed and shipped as one order instead of two separate freight bills.

Call (407) 774-8324. We love talking builds, and our team can walk you through fitment, cooling setup, or anything else specific to a rotary install.

Quality You Can Trust

Rotary engines need a different kind of attention than a piston engine, and we treat them that way. Every 13B goes through compression testing and a full visual inspection, so you're not the one finding out about worn apex seals after it's already bolted in.

•          Carefully tested before it ships, with real compression numbers

•          90-day > warranty > on every engine

•          Nationwide freight from our Orlando warehouse

We've handled enough rotary engines over the years to know where the common problems hide, and we check for them every time. That's the kind of thing you only get from someone who actually understands this engine, not someone just moving parts.

If you're weighing your options and want more background on how the rotary design works before you commit, our team is glad to walk you through it over the phone too.

Order your 13B Rotary now, or call (407) 774-8324 and let's talk about your RX-7 build.