Reverse Rotation EWG Manifold
A cast top-mount turbo manifold for the Mazda Miata NA and NB, made in-house from NiResist D5S Type 2 for reverse-rotation turbos, with a V-band turbine flange and an external wastegate.
Made by Kraken
Built in our own European workshop, start to finish.
Shipped by air
Dispatched to the US, fully tracked.
We cover US duties and customs
No surprise bills on delivery.
- If it fails, we replace it→
If a part we made fails, we make you a new one.
Questions about fitment?
Send us a message →Reverse Rotation EWG Manifold
$755.00
Complete kit
Build the complete kit
This part is also in the Turbo Kit Builder. Configure a full bolt-on system and order it in one go.
Open the kit builder →The Reverse Rotation Top Mount Manifold.
The reverse-rotation manifold is cast in-house from NiResist D5S Type 2 as a top-mount design for the NA and NB. It is built for reverse-rotation turbochargers, spinning the compressor counter-clockwise and turning the outlet toward the front of the bay. In the compact Miata engine bay, that shortens the charge-pipe run and removes bends, lowering pressure loss. The wastegate mounts externally, on a V-band 38mm or 44mm flange.
Outlet To The Front
The manifold is built for reverse-rotation turbochargers, spinning the compressor counter-clockwise and turning the outlet toward the front of the engine bay rather than the firewall. In the compact Miata bay, that shortens the charge-pipe run and removes bends.
Boost Control Off The Housing
The wastegate mounts externally, on a V-band flange sized for a 38mm or 44mm gate, keeping boost control off the turbine housing. That reduces the exhaust reversion of an internal-wastegate setup, holds turbine efficiency at higher boost, and gives a separate dump for exhaust-pulse management.
Cast In NiResist D5S
The manifold is cast in-house from NiResist D5S Type 2, a high-nickel iron used for turbine housings, providing resistance to exhaust heat and cracking. The top-mount casting clears the bonnet and the air-conditioning compressor, and mounts the turbo on a V-band flange.
Specifications
Manifold Questions
What is reverse rotation?+
The turbo's compressor spins counter-clockwise, turning the outlet toward the front of the bay rather than the firewall. In the compact Miata engine bay, that shortens the charge-pipe run and removes bends.
Which turbos fit this manifold?+
Reverse-rotation external-wastegate turbos with a V-band inlet, in the G25 frame, such as the PSR G25-550 and G25-660 or the Garrett G25-585.
Internal or external wastegate?+
External, on a V-band flange sized for a 38mm or 44mm gate, keeping boost control off the turbine housing.
Does it clear the bonnet and air conditioning?+
Yes. The top-mount casting clears the bonnet and the air-conditioning compressor.
Which engines does it fit?+
The 1.6 B6 and 1.8 BP engines in the Mazda Miata NA and NB (1989 to 2005). Choose 1.6 or 1.8 at order.
What is the manifold made from?+
NiResist D5S Type 2, a high-nickel cast iron used for turbine housings, providing resistance to exhaust heat and cracking.
Shipping & Returns
Worldwide Shipping
Orders to the US ship by air. Every order is tracked.
Import Duties
We cover all US import duties and customs. The price at checkout is final, with no surprise bill on delivery.
Returns
Unused items in original packaging may be returned within 14 days of delivery. Custom-built or configured kits are non-returnable. Contact us to arrange a return.
Warranty
If a part we make fails, we make you a new one.
