Designed around 89–94 Mazda MX5 / Miata / Eunos Roadster Mk1 (NA) with the 1.8 engine (BP), this equal-length tubular manifold uses closely matched runner lengths for balanced exhaust pulses at the collector.

The manifold uses 1.5-inch to 2.5-inch stainless steel pipework with TIG-welded joints; its runner and collector layout is designed to improve exhaust flow and support sharper engine response.

Key features

• Vehicle-specific fitment: Mazda MX5 / Miata / Eunos Roadster Mk1 (NA) — 89-94
• Equal-length runner layout for more consistent exhaust pulse timing
• 1.5″ to 2.5″ pipework · Stainless Steel construction · TIG-welded joints
• Fitting kit included

Sound and character

Equal-length runners create a smoother, more even exhaust character through the rev range.

Fitment notes

Fits 89–94 Mazda MX5 / Miata / Eunos Roadster Mk1 (NA) with the 1.8 engine (BP). Configured for an aftermarket 2.5-inch, 370 mm adjoining section.

The layout was selected to optimise flow and support improved engine response and power.

What’s in the box?

• 1 × Equal-Length Tubular Exhaust Manifold
• 1 × Manifold Adapter Pipe
• 1 × Fitting Kit