SKU: 29874711781

HELIX Ci7 T20FM-SC + HELIX CFMK20 MB.1 Bundle

$193.47 $214.97
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Description

HELIX Ci7 T20FM-SC + HELIX CFMK20 MB.1 BundleMatched speaker and vehicle specific adapter bundle. Speaker: HELIX Ci7 T20FM SC (CI21001) Adapter: HELIX CFMK20 MB. 1 (CI42004) Vehicle compatibility Please check your make, model, year, sound system and speaker position before ordering. Mercedes AMG GT X290 02 2018 today Front Door (Advanced Sound System) Mercedes AMG GT X290 02 2018 today Front Door (Burmester Sound System) Mercedes AMG GT X290 02 2018 today Front Door (Standard Sound System with

Matched speaker and vehicle-specific adapter bundle.

  • Speaker: HELIX Ci7 T20FM-SC (CI21001)
  • Adapter: HELIX CFMK20 MB.1 (CI42004)

Vehicle compatibility

Please check your make, model, year, sound system and speaker position before ordering.

  • Mercedes AMG GT X290 02/2018-today — Front Door (Advanced Sound System)
  • Mercedes AMG GT X290 02/2018-today — Front Door (Burmester Sound System)
  • Mercedes AMG GT X290 02/2018-today — Front Door (Standard Sound System with ASD)
  • Mercedes AMG GT X290 02/2018-today — Front Door (Standard Soundsystem)
  • Mercedes B-Klasse W247 01/2019-today — Front Door (Burmester Sound System)
  • Mercedes B-Klasse W247 01/2019-today — Front Door (Standard Soundsystem)
  • Mercedes C-Klasse A205 02/2016-today — Front Door (Advanced Sound System)
  • Mercedes C-Klasse A205 02/2016-today — Front Door (Burmester Sound System)
  • Mercedes C-Klasse C205 02/2014-01/2022 — Front Door (Advanced Sound System)
  • Mercedes C-Klasse C205 02/2014-01/2022 — Front Door (Burmester Sound System)
  • Mercedes C-Klasse C205 02/2014-01/2022 — Front Door (Standard Soundsystem)
  • Mercedes C-Klasse S205 02/2014-01/2022 — Front Door (Advanced Sound System)
  • Mercedes C-Klasse S205 02/2014-01/2022 — Front Door (Burmester Sound System)
  • Mercedes C-Klasse S205 02/2014-01/2022 — Front Door (Standard Soundsystem)
  • Mercedes C-Klasse S206 02/2021-today — Front Door (Advanced Sound System)
  • Mercedes C-Klasse S206 02/2021-today — Front Door (Burmester Sound System)
  • Mercedes C-Klasse S206 02/2021-today — Front Door (Standard Soundsystem)
  • Mercedes C-Klasse W205 02/2014-01/2022 — Front Door (Advanced Sound System)
  • Mercedes C-Klasse W205 02/2014-01/2022 — Front Door (Burmester Sound System)
  • Mercedes C-Klasse W205 02/2014-01/2022 — Front Door (Standard Soundsystem)
  • Mercedes C-Klasse W206 06/2021-today — Front Door (Advanced Sound System)
  • Mercedes C-Klasse W206 06/2021-today — Front Door (Burmester Sound System)
  • Mercedes C-Klasse W206 06/2021-today — Front Door (Standard Soundsystem)
  • Mercedes CLE 236 02/2023-today — Front Door (Advanced Sound System)
  • Mercedes CLE 236 02/2023-today — Front Door (Burmester Sound System)
  • Mercedes CLS C257 03/2018-today — Front Door (Burmester High-End 3D-Surround-Soundsystem)
  • Mercedes CLS C257 03/2018-today — Front Door (Burmester Sound System)
  • Mercedes CLS C257 03/2018-today — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse All Terain X214 02/2023-today — Front Door (Advanced Sound System)
  • Mercedes E-Klasse All Terain X214 02/2023-today — Front Door (Burmester Sound System)
  • Mercedes E-Klasse All Terain X214 02/2023-today — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse Cabrio A238 02/2017-06/2020 — Front Door (Burmester Sound System)
  • Mercedes E-Klasse Cabrio A238 02/2017-06/2020 — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse Coupe C238 12/2016-06/2020 — Front Door (Burmester Sound System)
  • Mercedes E-Klasse Coupe C238 12/2016-06/2020 — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse S213 02/2016-04/2023 — Front Door (Advanced Sound System)
  • Mercedes E-Klasse S213 02/2016-04/2023 — Front Door (Burmester Sound System)
  • Mercedes E-Klasse S213 02/2016-04/2023 — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse S214 02/2023-today — Front Door (Advanced Sound System)
  • Mercedes E-Klasse S214 02/2023-today — Front Door (Burmester Sound System)
  • Mercedes E-Klasse S214 02/2023-today — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse W213 05/2016-06/2020 — Front Door (Advanced Sound System)
  • Mercedes E-Klasse W213 05/2016-06/2020 — Front Door (Burmester High-End 3D-Surround-Soundsystem)
  • Mercedes E-Klasse W213 05/2016-06/2020 — Front Door (Burmester Sound System)
  • Mercedes E-Klasse W213 05/2016-06/2020 — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse W213 Facelift 06/2020-06/2023 — Front Door (Advanced Sound System)
  • Mercedes E-Klasse W213 Facelift 06/2020-06/2023 — Front Door (Burmester High-End 3D-Surround-Soundsystem)
  • Mercedes E-Klasse W213 Facelift 06/2020-06/2023 — Front Door (Burmester Sound System)
  • Mercedes E-Klasse W213 Facelift 06/2020-06/2023 — Front Door (Standard Soundsystem)
  • Mercedes E-Klasse W214 07/2023-today — Front Door (Advanced Sound System)
  • Mercedes E-Klasse W214 07/2023-today — Front Door (Burmester High-End 4D-Surround-Soundsystem)
  • Mercedes E-Klasse W214 07/2023-today — Front Door (Burmester Sound System)
  • Mercedes E-Klasse W214 07/2023-today — Front Door (Standard Soundsystem)
  • Mercedes EQC N293 02/2019-today — Front Door (Burmester Sound System)
  • Mercedes EQC N293 02/2019-today — Front Door (Standard Soundsystem)
  • Mercedes EQE V295 01/2022-today — Front Door (Burmester Sound System)
  • Mercedes EQE V295 01/2022-today — Front Door (Standard Soundsystem)
  • Mercedes EQE X294 09/2022-today — Front Door (Advanced Sound System)
  • Mercedes EQE X294 09/2022-today — Front Door (Burmester Sound System)
  • Mercedes EQE X294 09/2022-today — Front Door (Standard Soundsystem)
  • Mercedes EQS V297 01/2021-today — Front Door (Advanced Sound System)
  • Mercedes EQS V297 01/2021-today — Front Door (Burmester Sound System)
  • Mercedes EQS V297 01/2021-today — Front Door (Standard Soundsystem)
  • Mercedes EQS X296 02/2022-today — Front Door (Burmester Sound System)
  • Mercedes EQS X296 02/2022-today — Front Door (Standard Soundsystem)
  • Mercedes G-Klasse W463_2019 05/2018-today — Rear (Burmester Sound System)
  • Mercedes G-Klasse W463_2019 05/2018-today — Rear (Standard Soundsystem)
  • Mercedes G-Klasse W465 02/2024-today — Front Door (Burmester Sound System)
  • Mercedes G-Klasse W465 02/2024-today — Front Door (Standard Soundsystem)
  • Mercedes GLB X247 02/2019-03/2023 — Front Door (Advanced Sound System)
  • Mercedes GLB X247 02/2019-03/2023 — Front Door (Burmester Sound System)
  • Mercedes GLB X247 02/2019-03/2023 — Front Door (Midline Soundsystem)
  • Mercedes GLB X247 02/2019-03/2023 — Front Door (Standard Soundsystem)
  • Mercedes GLC Coupe C253 09/2016-04/2019 — Front Door (Burmester Sound System)
  • Mercedes GLC Coupe C253 09/2016-04/2019 — Front Door (Standard Soundsystem)
  • Mercedes GLC X253 06/2015-04/2019 — Front Door (Burmester Sound System)
  • Mercedes GLC X253 06/2015-04/2019 — Front Door (Standard Soundsystem)
  • Mercedes GLC X253 Facelift 04/2019-06/2022 — Front Door (Advanced Sound System)
  • Mercedes GLC X253 Facelift 04/2019-06/2022 — Front Door (Burmester Sound System)
  • Mercedes GLC X253 Facelift 04/2019-06/2022 — Front Door (Midline Soundsystem)
  • Mercedes GLC X253 Facelift 04/2019-06/2022 — Front Door (Standard Soundsystem)
  • Mercedes GLC X254 06/2022-today — Front Door (Advanced Sound System)
  • Mercedes GLC X254 06/2022-today — Front Door (Burmester Sound System)
  • Mercedes GLC X254 06/2022-today — Front Door (Standard Soundsystem)
  • Mercedes GLE Coupe C167 02/2019-today — Front Door (Burmester Sound System)
  • Mercedes GLE Coupe C167 02/2019-today — Front Door (Standard Soundsystem)
  • Mercedes GLE V167 10/2019-02/2024 — Front Door (Burmester Sound System)
  • Mercedes GLE V167 10/2019-02/2024 — Front Door (Standard Soundsystem)
  • Mercedes GLS X167 01/2019-today — Front Door (Burmester High-End 3D-Surround-Soundsystem)
  • Mercedes GLS X167 01/2019-today — Front Door (Burmester Sound System)
  • Mercedes GLS X167 01/2019-today — Front Door (Standard Soundsystem)
  • Mercedes S-Klasse W222 06/2013-12/2020 — Front Door (Bang & Olufsen BEO Sound)
  • Mercedes S-Klasse W222 06/2013-12/2020 — Front Door (Burmester Sound System)
  • Mercedes S-Klasse W222 06/2013-12/2020 — Front Door (Standard Soundsystem)
  • Mercedes S-Klasse W223 12/2020-today — Front Door (Burmester Sound System)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29874711781

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4.6 ★★★★★
Based on 11 reviews
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Product Reviews
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Verified Purchase
ibuy2much
San Leandro, US
★★★★★ 4
Nice office chair!
Color: Dark
This is a nice office chair. All of the features work as stated. I would say the seat is slightly more firm than I prefer, but comfort is subjective. The pleather is soft and I like that the arm rests fold out of the way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
H
HateToRegister
Bozeman, US
★★★★★ 5
This Marsail Executive Office Chair Is Excellent For A Comfortable And Polished Desk Setup
Color: Dark
This Marsail executive office chair is excellent, and it brings together comfort, support and a clean professional look in a very practical way. The PU leather has a smooth, polished presence that suits a desk chair well without looking overly bulky. I appreciate that the design includes flip-up armrests, a height-adjustable seat, swivel movement and rolling mobility in one complete chair. The cushioning gives the chair a substantial seated feel, while the back design adds support without making the chair look heavy. It is an office chair that feels thoughtfully built for daily desk work, focused tasks and general seated comfort. The chair arrived securely protected and in very good condition, with the main parts kept in place well through transit. The PU leather surfaces looked clean, smooth and free from distracting marks when unpacked. The base, wheels, armrests, backrest and hardware all appeared properly finished and ready for assembly. Nothing about the chair parts looked loose, flimsy or poorly handled when it arrived. The included components were organized. The appearance of this chair is one of its strongest qualities because it has a dark, sleek and professional style. The chair fabric gives it a refined executive look, while the breathable mesh center keeps the backrest from appearing too solid or oversized. The flip-up armrests blend into the design nicely and add a cleaner profile when raised. The chair has a balanced shape, with a supportive back, plush seat and wide base that all work together visually. It looks modern without being too flashy, which makes it easy to place with different desks and work areas. Functionality is where this chair becomes especially practical because it is easy to put together and simple to adjust. The height adjustment works well for getting the seat into a comfortable position at a desk. The swivel and rolling movement make it easy to shift, turn and reach without the chair feeling stiff. The reclining range and gentle rocking function add a useful option for leaning back during breaks. The flip-up armrests are especially convenient because they allow the chair to tuck under a desk more easily and create extra freedom of movement when needed. The value is strong because this chair offers several useful features in one well-rounded design. The thicker cushioning, contoured support, PU leather surface, breathable backrest, reclining function and flip-up armrests all add to its usefulness. The sturdy base and stated 300-pound support rating also give it a more dependable feel than a basic desk chair. It provides the comfort expected from an executive chair while still offering space-saving details that make it practical. For the features, comfort and overall build, it delivers a very complete office seating option. I highly recommend this Marsail executive office chair for anyone wanting a comfortable, polished and functional desk chair. It is excellent, easy to put together and built with enough adjustability to support different work habits. The combination of plush cushioning, ergonomic shaping, smooth movement and flip-up armrests makes it especially useful for a home office or workspace. I also like that it has a professional look without sacrificing everyday convenience. It is a strong choice for dependable seating that looks good, works well and offers solid comfort.
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Reviewed in the United States on May 5, 2026
C
Cart Curator
Battle Creek, US
★★★★★ 5
Comfortable for daily use!
Color: Dark, Color: Dark
After using this chair for work and general desk time, I think it does a nice job balancing comfort, adjustability, and overall build quality without feeling overly bulky or cheap. It feels designed for people who spend long stretches at a desk and want something supportive but still comfortable enough to relax in occasionally. Assembly was straightforward. The instructions were clear, the hardware was organized well, and all the holes lined up properly during setup. I put it together by myself in around 20 minutes without needing extra tools. Once assembled, the chair immediately felt sturdy and stable rather than wobbly. The overall quality is solid for this price range. The PU leather has a soft feel and doesn’t have the stiff plastic-like texture some office chairs use. The stitching looks clean, the armrests feel secure, and the rolling base moves smoothly across the floor. The chair also feels durable overall, especially around the frame and base where cheaper chairs sometimes feel weak or shaky after a few weeks of use. It's very comfortable. The seat cushion is thick and supportive without feeling overly hard, and it stays comfortable during long work sessions. I’ve spent multiple hours at a time sitting in it without constantly adjusting positions or feeling pressure points. The mesh section in the backrest also helps airflow a bit, which keeps it from feeling too hot during extended use. The lumbar support is great. The backrest naturally follows the curve of your spine and provides good lower back support while still feeling relaxed enough for casual sitting. I also liked the higher back design since it supports the upper back and shoulders well during longer periods at the desk. The flip-up armrests ended up being more useful than I expected. They make it easy to slide the chair under the desk when not in use, and they also give more room if you like sitting cross-legged occasionally. Solid chair overally. It has a good mix of comfort, support, ease of use, and practical features without feeling overpriced.
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Reviewed in the United States on May 26, 2026
T
theman
Houston, US
★★★★★ 4
Comfortable, easy to assemble, but no adjustable armrests
Color: Dark, Color: Dark
The Marsail Executive Office Chair Ergonomic Desk Chair with Flip-up Armrests PU Leather was an easy to assemble chair; I was done within 15 minutes with the included tool. Extra screws were included which was nice as the main pack had broken open and I couldn't find one of the primary screws in the larger box (my guess is I probably tossed it on accident with the packaging material) but had the backup so all was well. The instructions were well written and clear. I've now had the chair in my office for over a week. For context; I work from home and also am a PC gamer so I spend a sizeable portion of my time at my desk in the chair. I also live in the southeast US and its April when I am writing this review. With that said; its been in the 70s/80s regularly so feel like I can comment fairly on its performance in warmer temps; though I'll have to try and remember to comeback and update it for the summer season when AC is on full blast and humidity is higher (and the inevitable "swamp butt" sets in). In the first week I've found the chair to be comfortable to sit in. It is wide enough and the arm rests to the side enough that I can sort of lean left and right without much trouble. I like this wider seat and armrests compared to chairs with more narrow span as I tend to shift and move a lot while sitting. The PU leather material feels nice against my clothes and does "grip" the clothing which helps with my tendency to want to slide forward when sitting. At first I thought the "grip" would be annoying but I sort of like it after a week of using the chair. The cushion material is comfortable for sitting and rebounds well after I've been sitting in it for a long period of time. The armrests feature the same sort of cushion and PU leather material which makes them comfortable to sit back and lean on. For the price I think this is a solid office chair and a comfortable option. Longevity will only be tested over time so I'll see if I can remember to update this review over time. I am happy with the chair in my office. A few downsides about the chair that I have: - The wheels are very stiff and don't roll as smoothly as I'd like. They stay put when I am sitting at the desk but when I need to push away they take a bit of force. - The arm rests can't be adjusted for height. They are one height and can only be moved out of the way completely. For someone like who likes to lean or shift sides this is less than ideal as I'd normally make adjustments to the armrests. With that said it is nice to be able to move them out of the way completely when I don't need them. - Lumbar support could be better. I will be using additional support in the chair for my back.
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Reviewed in the United States on April 13, 2026
S
Sal
Louisville, US
★★★★★ 5
Good for sitting on it daily. Not that soft as expected
Color: Dark, Color: Dark
I’ve been using this chair for a few days now and overall it’s pretty solid for a home office setup, especially for the price range. Assembly took me about 30–40 minutes alone and all the parts were labeled clearly. Nothing arrived damaged and the instructions were easy to follow, though attaching the backrest was a little awkward with one person. Once assembled, the chair looks clean and professional. The PU leather feels smooth and the cushioning is definitely thicker than cheaper office chairs I’ve tried. It’s comfortable for working several hours at a time, although I wouldn’t describe it as super plush or “sink-in” soft. The seat has a firmer feel, which may actually be better for posture during long work sessions. The ergonomic support is decent. The backrest follows the shape of your back fairly well and gives noticeable lumbar support compared to flat office chairs. I spend a lot of time at my desk and this chair helped reduce some lower back discomfort. The reclining and rocking feature is also nice for quick breaks between meetings or while watching videos. It doesn’t recline extremely far, but enough to relax a bit without feeling unstable. One feature I ended up liking more than expected was the flip-up armrests. They make it easy to slide the chair completely under the desk and also give more room if you like sitting cross-legged occasionally. The chair rolls smoothly and feels stable even when leaning back. A couple downsides though. The faux leather can get warm after extended sitting, especially in a warmer room. The mesh section helps airflow a little, but not enough to fully prevent heat buildup. Also, while the chair is comfortable, it doesn’t quite feel “premium executive” level in terms of materials. Some of the plastic components and armrests feel more mid-range than luxury. Overall, I’d say it’s a good value office chair with solid comfort, decent back support, and practical features. Great for everyday work or study use, just keep expectations realistic if you’re looking for a super high-end executive chair feel.
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Reviewed in the United States on May 6, 2026

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