A MAD Fabworx original design, created out of passion for engines and performance. The project was developed using professional CAD and CAE software.
The 4-2-1 manifold was engineered to maximize torque in the mid-range – exactly where the MX-5 spends most of its time on the road and when powering out of corners on the track.
The only fully equal-length 4-2-1 manifold on the market – with a runner length difference of less than 1.0 mm.
This manifold is the perfect combination of precision engineering and modern manufacturing methods. Thanks to its equal-length design and optimized pipe diameters, it offers the ideal balance between performance and engine smoothness.
Performance improvement:
Up to 10 PS and 12 Nm without ECU remapping
Up to 18 PS and 25 Nm with ECU remapping
*maximum difference values measured on the engine - may differ upon engine, fuel, dyno setup, etc.
Fits 1.5 and 2.0 in the Mazda MX-5 ND
Original CAD/CAE project – designed and validated with top-tier engineering software
CNC-bent and TIG-welded pipes – optimized for exhaust flow
Equal-length runners – less than 1.0 mm difference, unique on the market
Pipe diameters:
Primaries: 42.5 mm
Secondaries: 50 mm
Outlet: 60.3 mm (2.5")
Kit includes:
4-2-1 true equal length exhaust manifold
manifold-to-head gasket
exhaust gasket
A MAD Fabworx original design, created out of passion for engines and performance. The project was developed using professional CAD and CAE software.
The 4-2-1 manifold was engineered to maximize torque in the mid-range – exactly where the MX-5 spends most of its time on the road and when powering out of corners on the track.
The only fully equal-length 4-2-1 manifold on the market – with a runner length difference of less than 1.0 mm.
This manifold is the perfect combination of precision engineering and modern manufacturing methods. Thanks to its equal-length design and optimized pipe diameters, it offers the ideal balance between performance and engine smoothness.
Performance improvement:
Up to 10 PS and 12 Nm without ECU remapping
Up to 18 PS and 25 Nm with ECU remapping
*maximum difference values measured on the engine - may differ upon engine, fuel, dyno setup, etc.
Fits 1.5 and 2.0 in the Mazda MX-5 ND
Original CAD/CAE project – designed and validated with top-tier engineering software
CNC-bent and TIG-welded pipes – optimized for exhaust flow
Equal-length runners – less than 1.0 mm difference, unique on the market
Pipe diameters:
Primaries: 42.5 mm
Secondaries: 50 mm
Outlet: 60.3 mm (2.5")
Kit includes:
4-2-1 true equal length exhaust manifold
manifold-to-head gasket
exhaust gasket
