Alpha A45 AMG Stage 3 Performance Package

$4,319.95 $4,049.80

Installing the Alpha Stage 3 A45 AMG Series Performance Package owners will experience astounding gains! Our stage 3 package comes with the Alpha Carbon Fiber Intake, Alpha Downpipe, Alpha Front Heat Exchanger, and Alpha Tune.

Note: Installation labor, dyno time, and ECU shipping charges are not included in the price.

SKU: ALP.19.10.0001-4 Categories: ,


AMS Performance is excited to announce the release of our Alpha A45 AMG Series Stage 3 Performance Package. By combining our extremely popular A45 AMG Series Carbon Fiber Intake System , The Alpha Performance A45 Series Downpipe, the Alpha Heat Exchanger, and our Alpha A45 Tuning Solution we give our customers the next step to powering up their driving experience.

cla A45 mods upgrade kit intake world record

The full Alpha CLA intake system includes a dry filter, carbon fiber lid, and carbon fiber inlet.

The Alpha Performance Mercedes-Benz CLA 45 AMG Carbon Fiber Intake System

Our engineering team immediately noticed a considerable level of restriction in the stock intake system and solved the problem by designing a smooth transition to a much larger filter.  By upgrading the size of your 2.6″ factory inlet filter to a robust 4″ design, we drastically reduced the high pressure drop – a sure indicator that your stock intake filter is choking your 2.0L M133 turbocharged engine. By simply installing this air intake upgrade on its own, you’ll be rewarded with a 20+HP increase!

a45 AMG downpipe mods upgrade kit

The Alpha Performance Mercedes-Benz CLA 45 AMG Cast Downpipe

The Alpha Mercedes-Benz CLA 45 AMG Cast Downpipes are the best performing and most durable on the market! During testing our shop CLA with our Alpha CLA 45 AMG Downpipe, Filter, and Alpha CLA Tune our Engine Calibrators saw amazing gains across the power band in both wheel horsepower and torque! The power came on earlier and carried over 100 ft lbs of torque gains from 2900rpm to 4850rpm!!! Turbo spool-up was significantly improved! The long gradual transitions within the cast down pipe section allows exhaust gasses to maintain velocity without a buildup of back pressure inside of the system!

a gla cla 45 amg fmic mods upgrade kit

The Alpha A45 AMG Series Center Heat Exchanger upgrade will help maintain your AMG’s maximum power output.

Alpha Doubles The Size For Maximum Cooling

By doubling the thickness of the OEM core you gain an extraordinary amount of added cooling by increasing efficiency. The Alpha heat exchanger core and end tanks hold an astounding 222% (58oz vs 18oz) more coolant than the stock heat exchanger! That’s close to a half gallon! You gain an increased thermal capacity over the entire intercooler system by accommodating the added coolant. The Alpha Engineering Team actually designed the core with 20 fins per inch rather than the factory 23 fins per inch. The lower fin density allows more airflow, and thus more heat transfer through the thicker core.

Motorsport Quality Upgrade For Your Boosted Benz

For the core of the Alpha Heat Exchanger we chose a motorsport quality heat exchanger core made in the UK. This high efficiency, single pass core is much larger and disapates heat quickly for maximum cooling. Through our larger design, added fluid capacity and drastically increased flow, your 2.0L M133 turbocharged engine benefits from reduced intake air temperatures (IAT) boosting your power output!


cla A45 mods upgrade kit tune world record downpipe intake turbo fuel pump

Alpha A45 AMG Stage 3 Performance Package Tune.


Alpha Performance Mercedes-Benz CLA 45 AMG Series Tuning

With its stout design, the Mercedes-Benz CLA/GLA/A 45 Series AMG engine provides excellent entry level luxury class power. Mercedes-Benz rated the stock horsepower output of their 45 Series AMG at 375HP and 350ft/lbs, but these engines are very under rated from the factory. Our completely stock 2014 CLA45 AMG made 401HP and 363ft/lbs. AMS found a way to tap into the hidden power of your A-Series AMG!

Just like all cars using an Alpha calibration file, your AMG 2.0L equipped Mercedes will exhibit smooth, stock-like drivability. The only difference is a dramatic increase in power and acceleration. What’s even better is that you’ll be able to enjoy all this with no detrimental effect to fuel economy at partial throttle or cruising speed. In order to tune your A Series AMG you need to remove your PCM. You then send your PCM to AMS where our industry leading Engine Calibrators will add the Alpha Performance tune to it and send it back for you to reinstall. Turn around time is an amazing one day.

Alpha Mercedes-Benz CLA45 AMG Tune

Graph represents Alpha A45 AMG Series Downpipe, Intake, Heat Exchanger, Tune and race gas.




  • W176 2013-2018 Mercedes-Benz A45 AMG
  • C117 2014-2018 Mercedes-Benz CLA45 AMG
  • X156 2014-2019 Mercedes-Benz GLA45 AMG

Additional information

Weight 5 lbs
Dimensions 15 × 13 × 7 in


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The goal of AMS is to provide the highest quality, best performing products available.
By utilizing research and development and rigorous testing programs AMS will never compromise the quality or performance of our products.

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On all orders over $199.99 in the lower 48.*Freight items not included*


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This policy only applies to installers and/or users who are in the United States, customers who reside in other countries should act in accordance with their local laws and regulations.

Some AMS Performance upgrades may solely be used on vehicles in sanctioned competition which may never be used upon a public road or highway, unless permitted by specific regulatory exemptions (such as a CARB E.O.). For state specific details please visit the following website:

It is the responsibility of the installer and/or user of the product to ensure that it is used in compliance with all applicable laws and regulations. If a product was purchased in error, do not install and/or use it. The purchaser must arrange to return the product(s) for a full refund.

All performance modifications and installations are at the customer’s own risk. AMS Performance holds no responsibility either implied or otherwise for mechanical, electrical or other failure when using any aftermarket performance products.