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Description
XForce | Ford Focus RS Varex Valved Cat-Back System with Smartbox 2016-2018 | ES-FRS16VMKSB-CBSFord Focus RS Smartbox Equipped Varex Valved Cat Back System ES FRS16VMKSB CBS Taking the sound of your Ford Focus RS to the next level couldnt be easier with our carefully crafted 304 grade stainless steel cat back exhaust system. Designed and tested in our Australian R&D facility, this 3 mandrel bent system is a proven package that adds a deep, crisp tone and the perfect level of crackle and pop to the turbocharged 2. 3L engine. The standout feature
Ford Focus RS Smartbox Equipped Varex Valved Cat-Back System - ES-FRS16VMKSB-CBS
Taking the sound of your Ford Focus RS to the next level couldn’t be easier with our carefully crafted 304-grade stainless steel cat-back exhaust system. Designed and tested in our Australian R&D facility, this 3” mandrel-bent system is a proven package that adds a deep, crisp tone and the perfect level of crackle and pop to the turbocharged 2.3L engine.
The standout feature is the Varex valve-controlled muffler, allowing you to switch from a tame, neighborhood-friendly volume to an unleashed, aggressive roar at the touch of a button. This kit includes the Smartbox, the ultimate in exhaust control. Using our patented Bluetooth smartphone app, Smartbox provides pre-set automatic valve control, GEO-fencing, and precise manual adjustment to truly make the sound yours.
What's in the Box?
- 1x 3" Matte Finish 304 Stainless Steel Cat-Back System
- 1x Centre Hotdog Resonator
- 1x Varex Valved Rear Muffler (Polished Stainless)
- 1x Smartbox Control Module
- Dual 4.5" Double-Wall Black Stainless Steel Tips
- All Necessary Gaskets, Nuts, and Bolts
Features:
- 304 Stainless Steel: High-grade construction for maximum durability and corrosion resistance.
- Varex Valved Technology: Direct control over your exhaust sound volume via the internal electronic valve.
- Smartbox Included: Enables smartphone app control, GEO-fencing (sound based on location), and Matrix Mode for automated valve adjustment.
- 3" Mandrel-Bent Tubing: Matte finish pipework optimized for high-velocity exhaust flow and power gains.
- 4.5" Double-Wall Black Tips: Massive, premium black tips for a stealthy and aggressive rear-end aesthetic.
- Hotdog Resonator: Specifically designed to maintain a clean exhaust note while reducing unwanted interior drone.
Specifications:
- Part Number: ES-FRS16VMKSB-CBS
- System Type: Cat-Back Exhaust
- Pipe Diameter: 3" (76.2mm)
- Material: 304 Stainless Steel
- Valve Control: Varex with Smartbox (App Controlled)
- Tip Size: Dual 4.5" Double-Wall
- Tip Finish: Black Stainless Steel
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
- Smartbox Connectivity: Requires a compatible smartphone and the Xforce Varex App for full functionality.
- Installation Note: Electrical wiring is required for the Varex muffler and Smartbox module. Professional installation is highly recommended.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| FORD | FOCUS | 2016 | 2018 | Hatchback | RS (LZ) | 2.3L Turbo | RS | AWD |
Warranty Information
| Product Type | Warranty Period |
|---|---|
| 304 & 201 Stainless Steel Exhaust Systems | 60 Months |
| Accessories | 12 Months |
| Catalytic Converters | 12 Months |
| Electronic Products (Including SmartBox) | 12 Months |
| Mild Steel & 409 Stainless Steel Exhaust Systems | 24 Months |
| Mild Steel Headers | 12 Months |
| Stainless Steel Headers | 24 Months |
| Universal 304 Stainless Steel Mufflers | 24 Months |
| Universal Mild Steel & 409 Stainless Steel Mufflers | 12 Months |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Who Says Pregnancy Pillows Are Just for Pregnancy?
Size: 57 Inch, Color: Light Grey, Size: 57 Inch, Color: Light Grey
I bought this pregnancy pillow even though I’m not pregnant, and I have zero regrets!
This thing is incredibly comfortable and provides support in all the right places. Whether I’m sleeping, reading, listening to an audiobook, or just relaxing in bed, it helps me get comfortable and stay comfortable.
I love being able to hug one side while supporting my back with the other. It feels like being surrounded by pillows without having to constantly rearrange them throughout the night.
The only downside is that it takes up a decent amount of bed space, but honestly, that’s a sacrifice I’m willing to make. My family may disagree. 😆
If you’re considering this pillow but aren’t pregnant, don’t let the name stop you. Comfort is for everyone!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
Pretty, but very practical.
Size: Full, Color: Mint Green
The color was exactly what I expected from the photo. It arrived in an unbelievably small package, but expanded quickly once I opened the bag. I waited the recommended 24 hours to be sure it was done. I am pleased that the length is a perfect fit, and I like that it comes up to the back of my neck when I'm sitting in bed. It is a bit softer than I originally imagined, but not so soft that I feel like I'm sinking through it. It's very pleasantly supportive. The fabric is like a soft ribbed corduroy with piping along the outer seam. It looks nice. Both ends have a pocket that is barely noticeable, but is the perfect size to keep your phone close by. I'm temporarily homebound and spending a lot of time sitting in bed, so I'm very glad I invested in this pillow for comfort and convenience. If you ever have trouble with pillows working their way under the edge of the headboard, and into the dusty space between the headboard and the wall, consider this problem solved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
★★★★★ 5
Measure your bed and space, I did and ordered the perfect fit!
Size: Queen, Color: Navy
Love this wedge pillow. I bought it for our boat stateroom bed. It fits perfectly as beds on a boat are always odd sizes. It is very comfortable allows me to sit up in bed to read. Also keeps our bed pillows from sliding back. Good quality, color and size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
★★★★★ 4
Comfy, Supportive, and Great for Lounging in Bed
This wedge-style headboard pillow has made sitting up in bed much more comfortable. The shape offers full upper-back support, with just the right amount of firmness to keep you propped upright without feeling stiff. It’s especially helpful for reading or watching shows in bed, and it stays in place well against a flat headboard.
The purple color is rich and vibrant in person, and the removable cover is soft to the touch with a smooth finish. We really appreciated that the cover zips off easily and can be machine washed—it held its shape and color after laundering. The pillow also has a nice weight to it, so it doesn’t feel flimsy or slide down easily.
This is a great addition for anyone who likes spending time sitting up in bed, whether for reading, working, or relaxing. It also doubles nicely as a decorative accent when the bed is made. The quality feels solid, and the size works well across the width of a queen bed without overwhelming the space. Id say it is ok for the price. It does retain warmth though
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 1, 2025
★★★★★ 5
Thick, Supportive, and Cozy for Reading or Nursing
Size: Full, Color: Olive Green
This wedge pillow has been a great fit on my daughter’s bed. It’s super soft and cozy, and at the same time offers great support for sitting up in bed. The pillow is nice and thick, so you don’t sink into it — perfect for reading, studying, or lounging without needing multiple regular pillows.
I tried it out myself and was surprised at how well it also works as support while nursing an infant. It props you up at just the right angle and feels stable without shifting around.
The removable, washable cover is a big plus, and the olive green color is subtle yet stylish. I’m impressed enough that I’ll either be purchasing one for myself soon or adding it to my Christmas list.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
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