Redstar Mercedes A45/CLA45/GLA45 M133 Downpipe
Pairs well with
Transform the exhaust performance of your Mercedes A45 AMG W176, CLA45 AMG W176 and GLA45 AMG X156, each powered by the 2.0L 4cyl M133 engine, with Redstar Exhaust M133 Downpipes. Designed as a direct replacement for the restrictive factory sections, these precision-built downpipes feature a long 3.5in OD primary section that transitions smoothly to 3in OD for optimised flow.
By lowering backpressure, the system delivers significant power gains, faster turbo spool and crisper throttle response, while the optional OEM-style heat shielding with a ceramic inner liner cuts radiant under-bonnet heat by up to 80%. Reduced heat helps protect surrounding components and supports turbocharger longevity, with a richer, more engaging exhaust tone to match.
Manufactured from 2.0mm wall 304 stainless steel, 100% TIG welded and back purged, and finished with OEM-spec bottom ball flanges and factory-style brackets, Redstar downpipes install as a true bolt-on upgrade. Choose between GESI GEN2 400cpsi or HJS 200cpsi ultra high-performance catalytic converters to suit your goals, and experience Redstar performance exhaust engineering built for durability, fitment and results.
Available Options
Key Performance Benefits
- Noticeable increase in power and torque from reduced exhaust restriction
- Quicker turbo spool and sharper throttle response
- Lower under-bonnet temperatures that help protect components and support turbo longevity
- Deeper, more engaging exhaust tone
- Straightforward 100% bolt-on installation using factory mounting points
Technical Specifications
- Long 3.5in OD section with smooth transition to 3in OD
- Highest quality 2.0mm wall 304 stainless steel construction
- 100% TIG welded and back purged for strength and consistency
- OEM-spec bottom ball flanges for reliable sealing
- Brackets and mounts mirror the OEM unit for precise fitment
Manufacturer fitment
- 2013-2019 Mercedes A45 AMG Hatchback W176 2.0L 4cyl M133 engine
- 2013-2019 Mercedes CLA45 AMG Coupe W176 2.0L 4cyl M133 engine
- 2014-2019 Mercedes GLA45 AMG SUV X156 2.0L 4cyl M133 engine
Fits
Mercedes-Benz A-Class (W176) Hatchback AMG A45 2015-2018
Mercedes-Benz CLA (C117) Coupe AMG CLA45 2015-2019
Mercedes-Benz GLA (X156) SUV AMG GLA45 2015-2020
Professional fitting is recommended.
Redstar Mercedes A45/CLA45/GLA45 M133 Downpipe
GESI GEN2 UHO+ 400cpsi 4.5" / Heat Shielded
$4,479.00
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