Exhaust› Exhaust Pipes, Systems and Components

ARMYTRIX

Valvetronic Cat Back Exhaust System

$3,080.00

SKU: MB774-C

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ARMYTRIX MB774-C is a Valvetronic Cat Back Exhaust System crafted from stainless steel. The system features a versatile valvetronic function, allowing for easy adjustment of sound levels to suit the driver's preference.
Show original supplier description
The ARMYTRIX MB774-C Valvetronic Cat Back Exhaust System is engineered to awaken the performance potential of Mercedes-Benz A45 W177 and GLA 45 H247 AMG models from 2019 onwards. The core of this system is its innovative Valvetronic technology, which offers unparalleled versatility. Users can seamlessly switch between a stealthy, quiet mode ideal for early mornings or residential areas, and an aggressive, louder mode for spirited driving. This control is managed via an included remote or a user-friendly smartphone application that connects through the ARMYTRIX exclusive OBDII dongle system. This advanced technology also introduces a fault code clearing mechanism for catalytic converters and OPF, reducing the likelihood of a check engine light. Installation is designed to be straightforward with a direct bolt-on application and a plug-n-play module that reduces installation time by approximately 30% compared to traditional wiring. The system includes a front pipe, mid pipe, valvetronic muffler, muffler adapters, a wireless remote control kit, and an EV motor bypass. The main pipe diameter is 3.15 inches. For fitment verification, it is recommended to utilize the vehicle's VIN and photos prior to installation. An ARMYTRIX OBDII Control Module is required for operation, and the vehicle's Dynamic Select system can be used to control valve settings (Comfort → Off, Sport → Auto, Sport + → On, Racing → On).

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandARMYTRIX
Part NumberMB774-C
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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