Brand: Stealth Chairs
Replacement Chair Base
Replacement Chair Base
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REPLACEMENT CHAIR BASE
5-star heavy-duty base • Midnight black finish • Built for professional use
YOUR CHAIR'S FOUNDATION
The chair base is the structural foundation that supports everything—your weight, the gas cylinder, the seat mechanism, and all the ergonomic technology above it. This isn't a cosmetic part. This is a safety-critical component that distributes hundreds of pounds of force across five contact points while you roll, pivot, and lean through marathon sessions.
WHAT THIS BASE DOES:
Made from high-grade fiber-reinforced composite material—not cheap plastic—this base is engineered to support up to 350 lbs while maintaining structural integrity through years of professional use. The black finish matches the sleek, professional aesthetic of Stealth Chairs while resisting scratches, scuffs, and stage wear.
WHY BASES FAIL (AND WHY YOU NEED A SPARE):
- Impact damage: Hit by road cases, fork lifts, or stage equipment during load-in/out—cracks or breaks one of the arms
- Stress fractures: Years of supporting 200+ lbs of dynamic weight eventually fatigues the material at stress points
- Caster damage: Forcing oversized or wrong-thread casters can crack the mounting sockets
- Transport abuse: Touring chairs get dropped, stacked improperly, or crushed in trucks—bases take the hit first
- Material fatigue: Even high-grade composites eventually wear from constant flexing under load
- Cylinder socket damage: Forcing a stuck cylinder or using wrong-size replacements can crack the center socket
- Rolling over debris: Cables, screws, or stage hardware caught under the base can snap an arm
Here's the reality: a cracked or broken base is a safety hazard. Even a hairline fracture can fail catastrophically when you least expect it—mid-session when you're leaning back or rolling to reach a control. When you're 8 hours into a mix and the base snaps, you're not just losing time. You're risking injury and potentially damaging expensive gear. This isn't a part to wait on.
INSTALLATION: COMPRESSION FIT REPLACEMENT
Pull out all five casters from the old base. Then remove the gas cylinder—either pull it out from the top (seat side) or knock it out from the bottom with a rubber mallet. If it's stuck, a few firm taps usually breaks the compression fit.
Flip the chair upside down. Using a rubber mallet or dead-blow hammer, tap around the center socket where the cylinder connects to the base. The old base is held by compression fit—firm, even taps will break it loose. Protect your floor with cardboard or a blanket.
Align the new base's center socket with the gas cylinder. Place a block of wood or thick cloth on top of the base to protect it, then hammer firmly around the socket until the base is fully seated. You'll feel it lock into place when the compression fit engages.
Push your five casters back into the base sockets. Flip the chair upright and test it—sit down, roll around, lean back. The base should feel rock-solid with no flex, creaking, or movement at the cylinder socket.
TOOLS YOU'LL NEED:
Total time: 10-15 minutes.
This isn't delicate work—you need to hammer with authority to break and set the compression fit. Don't be timid with the mallet.
Pro tip: If you're nervous about hammering directly on the chair, have someone hold the chair steady while you work, or do this on a padded surface. The compression fit is designed to take significant force—that's what makes it secure under load.
SPECIFICATIONS
Compatible with all Stealth and ErgoLab chair models. This is the genuine OEM replacement base—manufactured from the same high-grade fiber-reinforced composite as your original base. Designed to work with standard grip-ring casters (both 2" office-style and 4" TourMax heavy-duty). Universal cylinder socket fits all Stealth gas cylinders (short, tall, and extra-tall). Not a cheap plastic substitute that will crack under professional use.
PEACE OF MIND FOR PROFESSIONALS
A cracked or damaged base isn't just an inconvenience—it's a safety hazard that can fail catastrophically. When you're deep in a session, leaning back to evaluate a mix, and the base snaps, you're hitting the floor. Hard. Potentially onto expensive gear. Potentially injuring yourself in a way that costs you work for weeks.
A $75 replacement base vs. thousands in medical bills, damaged equipment, and lost work.
Most companies would tell you to buy a whole new chair. We stock bases so you can keep your chair safe and functional.
For touring professionals: bases take the most abuse during transport. They're the first thing to hit the truck floor, the last thing protected in road cases, and the most exposed to impacts during load-in/out. Having a spare base means you can swap it out on the road instead of nursing a cracked base through the rest of the tour, hoping it doesn't fail mid-show.
This base represents our core commitment: professional equipment should be built to last, easy to maintain, and impossible to make obsolete. Made from durable, high-grade fiber-reinforced composite materials, this replacement base provides years of reliable use under the demanding conditions of professional audio, lighting, and video work.
PRO TIP: INSPECT BEFORE EVERY TOUR
Make base inspection part of your pre-tour checklist. Run your hand along each of the five arms feeling for cracks. Look for stress marks, discoloration, or hairline fractures around the caster sockets and center hub. If you find anything suspicious, replace the base before you leave—not when you're 1,000 miles from home.
For venues and studios: keep a spare base in your parts inventory. When a chair base cracks during a session, you don't want to be ordering parts overnight. Swap the base in 15 minutes and keep the work flowing. For $75, you've got insurance against a chair being down for days.
COMPLETE YOUR BASE REPLACEMENT
While you're replacing the base, consider these related parts:
Heavy-duty 4" wheels for tour and venue environments
Short, tall, or extra-tall cylinders for different working heights
Replace casters with stationary glides for stage positions
Features
Features
Black Polished easy to clean base
Dimensions
Dimensions
Same as original
Who Is This For?
Who Is This For?
Anyone looking to replace thier stealth chair base
Warranty
Warranty
Every Stealth Chair is backed by a comprehensive 5-year warranty, ensuring long-lasting durability and performance. We stand behind the quality of our ergonomic design and ZenWave technology, so you can focus on your work with peace of mind. Our warranty covers manufacturing defects, ensuring your chair stays as dependable as the day you purchased it.
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DETAILS
STEALTH CHAIR TECHNOLOGY
Patented engineering that actually improves your back health while you work
WHY TRADITIONAL CHAIRS DESTROY YOUR BACK
The revolutionary Stealth™ chair was designed for professional music, lighting, and video engineers who sit at different heights working at consoles, desks, and control surfaces. Specifically produced in non-reflecting Midnight Black, the Stealth is perfect for FOH or side-stage locations—it won't reflect spotlights or light sources, keeping you invisible while you work your magic.
SEE THE DIFFERENCE IN ACTION
Watch how ZenWave™ motion technology supports your body in real working positions
CRITICAL SPECS & WHY THEY MATTER
Why it matters: Stage lights, camera rigs, and console monitors won't catch reflections from your chair. Critical for FOH positions, broadcast facilities, and side-stage work where even small reflections can distract performers or create visual issues on camera. This isn't about aesthetics—it's about professional invisibility.
Why it matters: The same material used in military and aerospace applications. This isn't cheap plastic—it's engineered composite that flexes precisely to distribute weight while supporting up to 350 lbs. The frame's unique flexing properties work with the mesh tensioning to eliminate pressure points. This technology is what makes the ZenWave™ motion possible.
Why it matters: Not all mesh is created equal. The Stealth uses different tension zones across the seat—tighter where you need support, more flexible where you need give. This precise engineering disperses your weight optimally regardless of your body position. Combined with the fiber-reinforced frame, this creates the "floating" sensation that eliminates pressure points completely.
Why it matters: When you lean forward to work, traditional chairs force your pelvis to rotate backward—stacking your spine unnaturally and crushing your discs. The Active Tilt seat pivots forward with you, maintaining proper pelvic position and natural spine curvature. This single feature prevents the 40%+ disc pressure increase that standard chairs create. You can lean into marathon sessions without cumulative damage.
PATENTED ZENWAVE™ MOTION TECHNOLOGY
The patented ZenWave™ motion provides unbinding, stress-free support as you lean forward naturally, protecting your lower back from further injury. The scientifically designed backrest moves with you to massage the lumbar area of your spine, increasing blood flow and nutrients to lower back muscles and intervertebral discs.
The patented ZenWave™ motion technology allows you to float forward and backward without harmful pressure. Your body's natural movements are supported, not restricted.
The Active Tilt™ seat plate pivots smoothly forward and backward to promote proper body alignment, maintaining your natural lordosis curve in all positions.
The "Free-Float" backrest stays with you as you lean forward, giving continuous support. Unlike static backrests that abandon you when you work.
Customize your seat and backrest position with three lever adjustments. Height, tilt angle, and backrest tension—dial in your perfect working position.
Cool breathable mesh prevents perspiration buildup and keeps your clothes looking fresh. No more sweat-soaked shirts during marathon sessions.
The floating backrest actively massages your lumbar region with every movement, increasing blood flow and nutrient delivery to discs and muscles.
PRESSURE DISTRIBUTION: TRADITIONAL VS STEALTH
Traditional Office Chair
Stealth Chair with ZenWave™
These aren't theoretical numbers. Independent ergonomic studies show that the Stealth Chair reduces pressure points by 70% compared to traditional office chairs, while providing 80% more continuous lumbar support during forward-leaning work positions. The result? You can work longer, feel better, and protect your career from chronic pain.
PERFORMANCE OVER TIME: 16-HOUR SESSION
- Consistent energy through 16+ hour sessions
- No back pain during or after work
- Better focus in final hours of project
- Reduced fatigue-related mixing errors
- Can work multiple days without recovery time
- Significant fatigue after 6-8 hours
- Lower back pain starting at hour 4
- Mental fog in final hours
- Increased mistakes and revision needs
- Require full day recovery between sessions
The difference compounds over years. Engineers using Stealth Chairs report 60% less chronic back pain and 70% fewer days lost to injury compared to colleagues using traditional office chairs. Your chair is either extending your career or ending it.
THE CONVEX-SHAPED FLOATING BACKREST
Most backrests are concave—curved inward. This creates pressure points and forces unnatural posture. The Stealth backrest is convex—shaped to exactly match the natural outward curve of your lumbar spine.
Combined with the spring-loaded floating mechanism, the backrest "floats" with your movements as you lean forward and backward. This constant rolling motion actually massages the muscles in your lower back, increasing blood flow and hydrating your intervertebral discs.
The result? Your back muscles stay refreshed even during extended work sessions. Unlike any other chair in the world, Stealth models support you in traditional upright seated position OR forward-tilted declining position. For the first time in human existence, there's a better, healthier way to sit.
The convex shape matches your spine's natural curve, eliminating pressure points and providing continuous massage with every movement
MILITARY-GRADE MATERIALS & CONSTRUCTION
Aerospace-grade composite materials engineered to flex precisely while supporting 350 lbs
Industrial-strength hydraulic lift system rated for 100,000+ cycles
Variable-tension zones engineered for optimal pressure distribution
Non-reflective midnight black finish resists chips, scratches, and stage wear
Every component is selected for one reason: longevity under professional use.
We don't cut corners. We don't use cheaper materials. We build chairs that outlast trends, tours, and technology upgrades. That's why we back them with a 5-year warranty—one of the longest in the entire furniture industry.
EXPERIENCE ZENWAVE™ TECHNOLOGY
Patented engineering backed by ergonomic science • 5-year warranty • Lifetime support
The only chair designed for how professionals actually work
Free shipping • 30-day trial • Replacement parts available
"Unlike any other chair in the world, Stealth models can be used in traditional upright seated position or in a forward-tilted declining position. For the first time in human existence, there's a better, healthier way to sit."
ABOUT STEALTH
ABOUT STEALTH CHAIRS
Almost 40 years of engineering excellence • Trusted by the world's top studios, tours, and venues
THE PROBLEM EVERY ENGINEER FACES
Here's something they don't teach you in audio school: the wrong chair will end your career faster than bad monitoring.
Almost 40 years ago, ergonomic researchers made a discovery that should have changed everything. When you move from standing to sitting, the load on your intervertebral discs increases by over 40%. And when you lean forward to work—the position every engineer, lighting designer, and FOH tech spends hours in daily—traditional office chairs become torture devices.
"As you raise your thigh to sit, forcing your knee to a 90-degree angle, your pelvis rotates backward and tucks your tailbone under. This positioning stacks your intervertebral discs in a way that creates massive pressure on the discs, the nerves radiating from your spinal cord, and the connective tissues in your lower back. This isn't discomfort—it's cumulative trauma disorder. The kind of chronic back pain that ends careers."
— Ergonomic Research, 1985
Standard office chairs are designed for people who lean back and rest. You don't rest. You work. You lean forward over consoles. You reach for faders. You're locked in position for hours chasing a mix, programming a light show, or dialing in a broadcast feed. Every minute in the wrong chair compounds the damage.
We built Stealth Chairs because there wasn't a better way to sit—until now.
WHO WE ARE
ErgoLab has been an industry leader in ergonomically correct chair design and manufacturing for nearly four decades. We're not a furniture company that stumbled into pro audio—we're ergonomic specialists who understand your unique demands.
People are different. Not profound, but most chair manufacturers overlook this. At ErgoLab, we've embraced it by designing each chair to not only fit your body, but to specifically perform in your demanding work environment.
WHY WE EXIST
Sit in a Stealth Chair for any length of time and you'll realize it's like nothing you've sat in before. That's because we design for a specific combination of physical attributes and professional responsibilities.
Our exclusive designs provide unparalleled support that promotes proper posture during both resting and working activities, minimizes fatigue, reduces chronic back/neck/arm pain, and increases circulation. All of which help you perform at your best.
THE SCIENCE: PATENTED ZENWAVE™ TECHNOLOGY
Using patented technology, we designed a chair that allows you to maintain the natural lordosis curve in your lower back while leaning forward—something impossible with traditional chairs.
The secret? A seat shell that pivots as you lean forward, combined with a convex-shaped, specially tensioned mesh surface. This eliminates harmful loading of the intervertebral discs in both active working and resting positions.
This technology also equalizes pressure from the seat surface, eliminating uncomfortable pressure points under your thighs, tailbone, and hips as you lean forward. You'll feel like you're floating.
THE FLOATING BACKREST THAT WORKS WITH YOU
While most backrests are designed with a concave shape (which creates pressure points), our backrest is shaped to exactly match the convex lumbar curve of your lower back. Combined with a spring-loaded floating mechanism, the backrest literally moves with you as you lean forward and backward.
Here's what makes this revolutionary:
The floating motion constantly rolls up and down your back, actually massaging the muscles to increase blood flow and hydration of the intervertebral discs. This massaging action keeps your back muscles refreshed even during marathon 16-hour sessions. Your back gets better as the day goes on, not worse.
Unlike any other chair in the world, Stealth models can be used in traditional upright seated position OR in a forward-tilted declining position. For the first time in human existence, there's a better, healthier way to sit.
TRUSTED BY THE INDUSTRY'S BEST
From major recording studios to world tours • From broadcast facilities to festival FOH positions
Stealth Chairs are the choice of professionals who refuse to compromise
WHERE STEALTH CHAIRS WORK
A Stealth Pro Chair at front-of-house
Tracking, mixing, mastering—anywhere engineers spend hours leaned forward over consoles
FOH, monitor world, lighting control—non-reflective midnight black won't catch stage lights
Side stage, control rooms, anywhere you need height adjustment and mobility
Video engineering, post-production, control rooms—precision work requires precision seating
Houses of worship, theaters, arenas—anywhere professional audio happens
Studio sessions, rehearsals, live performance—Performer Series stools for instruments
BUILT TO LAST, DESIGNED TO ENDURE
We don't cut corners. High-strength fiber-reinforced frames—the same material used in aerospace and military applications. Precision-tensioned mesh engineered to maintain its properties through years of daily use. Class 4 gas cylinders. Powder-coated bases. Every component selected for durability, not price.
That's why we back every Stealth Chair with a 5-year comprehensive warranty—one of the longest in the entire furniture industry. Most companies offer 1-2 years. We offer five. Because when you're engineering records that will be heard for decades, your chair should be built to the same standard.
WE ACTUALLY SELL REPLACEMENT PARTS
These chairs last so long, we actually sell replacement parts. Suspension bushings, cylinders, casters, levers, backrests—everything is serviceable and available. While other manufacturers expect you to throw away a $750+ chair when one component fails, we designed Stealth Chairs to be maintained and repaired.
This isn't planned obsolescence. This is engineered longevity.
Buy once, maintain forever.
Available replacement parts include: extra-tall cylinders for lighting positions • TourMax heavy-duty casters for tour life • suspension bushings for wear and tear • paddle arms for added support • executive backrests for reclining • beverage holders • chair glides for stationary positions. Everything you need to keep your chair performing like new.
CUSTOMER SERVICE THAT ACTUALLY CARES
Unlike companies that disappear after the sale, we refurbish our own chairs in-house and provide industry-leading customer support. Got a question at 11 PM before a session? Need a replacement part shipped overnight? Want to upgrade your existing chair?
We're here for you—not just at purchase, but for the life of your chair. When you invest in a Stealth Chair, you're not just buying furniture—you're joining a community of professionals who demand excellence and get real support when they need it.
CONNECT WITH US
We're located in Centennial, Colorado and ready to support you
7300 S Tucson Way
Centennial, CO 80112
(844) 319-7201
Call anytime for support
Monday - Friday
9:00 AM - 5:00 PM MT
EXPERIENCE THE DIFFERENCE
40 years of engineering excellence • 5-year warranty • Lifetime support
Your back will thank you. Your career will thank you.
"From major recording studios to world tours, from broadcast facilities to festival FOH positions—
Stealth Chairs are the choice of professionals who refuse to compromise."
Made for professionals, by professionals. Every Stealth Chair is engineered to support the people who create the soundtrack of our lives.
From the first take to the final master, we've got your back—literally.
SHIPPING
Shipping Varies based on size and location.
Each order is custom upholstered, assembled, and inspected before it leaves our facility in Centennial Colorado.
Most orders are completed within 2 weeks' time and shipped within the USA for a total of 3-4 weeks turnaround.
There are times when an order may be placed on backorder and you will be notified by the email and or phone number you provide.
For shipping, we commonly use UPS and have a standard rate of $99 to cover all costs of shipping in the USA. This allows us to ship daily from our facility to you in a timely manner and update your order accordingly.
On some larger orders, it may require custom freight or pallet-based shipping. We will work with our vendors to find the best available rate on shipping and or split an order to get it to you in a timely fashion and or reduce cost.
Once you place an order with Stealth Chairs and you are working with a dealer they will be notified that the order is confirmed and or shipping to make things easier for order transparency. If the order is shipping to the dealer you will still be notified of the order placement and or shipping by email on the order placed. If you would like additional notifications we can send them as well to the emails you provide and or you update VIA your crown seating account.
If You are outside the USA
Please Check with https://www.universal-distribution.co.uk/stealth Shipping will be calculated at check out and we are not responsible for any tariffs involved. You will be notified by the shipping company of these tariffs you are responsible for. We do our best to make sure you get the best rate by DHL, UPS, and or other companies to complete the shipping without additional costs. An average order with custom upholstery outside the USA is about 6-8 Weeks before you receive it.
Back-ordered based on materials
We use the best upholstery, materials, and components to create a seating experience that will last a lifetime. In doing this sometimes certain parts may be back-ordered due to volume, waiting on shipments, and or customized options provided for you. You will always be notified provided by the email on file and or a phone call from a representative to let you know of the new lead time and or options to change the order to expedite delivery.
Working with a dealer
When working with a dealer there may be times when your order is not updated by us. This is due to the dealer arranging the best delivery window and or notification has been paused to await other items from additional vendors, parts, and or items that you have placed on a larger order. You will be notified by your dealer on when or where these orders are from Stealth Chairs and if there is a delay the dealer can notify us or you of the expected time window based on the order.
How does the Stealth Chair come and or is it assembled?
Each stool may be dissembled based on the best method of shipping. The stool will be detached from the base and cylinder to make shipping easy. Each stool takes an average of 5-15 minutes to assemble out of the box. We do offer fully assembled stools based on your order for additional costs and shipping. Please reach out after you place the order to have it fully assembled and you will receive a separate invoice for this service.
Has my order shipped?
Click the "My Account / Order Status" link at the top right-hand side of our site to check the status of your order. How do I change quantities or cancel an item in my order?
Click the "My Account / Order Status" link at the top right-hand side of our site to view orders you have placed. Then click the "Change quantities / cancel orders" link to find and edit your order.
Please note that once an order has begun processing or has shipped, the order is no longer editable.
How do I track my order? Click the "My Account / Order Status" link at the top right hand side of our site to track your order.
My order never arrived. Click the "My Account / Order Status" link at the top right hand side of our site to track your order status. Be sure that all of the items in your order have shipped already. If you order displays your Package Tracking Numbers, check with the shipper to confirm that your packages were delivered. If your packages each show a status of "delivered", please contact customer service for assistance.
An item is missing from my shipment. Click the "My Account / Order Status" link at the top right hand side of our site to track your order status. Be sure that all of the items in your order have shipped already. If you order displays your Package Tracking Numbers, check with the shipper to confirm that your packages were delivered. If your packages each show a status of "delivered", please contact customer service for assistance.
My product is missing parts. Click the "My Account / Order Status" link at the top right-hand side of our site to track your order status. Be sure that all of the items in your order have shipped already. If your order displays your Package Tracking Numbers, check with the shipper to confirm that your packages were delivered. If your packages each show a status of "delivered", please contact customer service for assistance.
When will my backorder arrive? Backordered items are those which our suppliers are unable to predict when they will have more in stock, but as soon as they do, we will be able to ship the item to you.
International ShippingDo you ship to my country?Please create an account by clicking the "My Account / Order Status" link at the top right hand side of our site. During signup, we'll ask for your shipping address details including country. If your country is not in the dropdown menu of available countries, unfortunately, we cannot ship to your country at this time.What are my payment choices?During the checkout process, you may choose any of our current payment options and continue to place your order. Please note that we will not ship your order until we receive payment from you.When will my order ship and what are my shipping charges?Shipping is automatically calculated prior to submit your payment information. Simply add items to your cart and proceed to the Checkout page where you will be offered Shipping Method choices and their prices. We will ship your order shortly after we receive payment from you.What is the return policy?Please see ourTerms & Conditionsfor complete details regarding our return policy.Do I have to pay sales tax?You only have to pay sales tax if you are located in the same state as our warehouse.I have a question on my charges.Click the "My Account / Order Status" link at the top right-hand side of our site to review your orders. You may compare your order history on our website, with your financial records. If you have further questions or concerns, please contact customer service for further assistance.I need a copy of my receipt/invoice.Click the "My Account / Order Status" link at the top right-hand side of our site to print invoices.When will my credit appear on my account?Credits usually take 7-10 business days from the time we receive your item(s).When will my credit card be charged?Your credit card will be charged within 24 hours prior to the shipment of your item(s).
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