Replacement Chair Base

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: Weight Distribution: The 5-star design distributes your body weight plus dynamic forces (leaning, rolling, pivoting) across five points instead of concentrating stress in one area Stability Platform: Provides the stable foundation that makes ZenWave™ motion possible—without a solid base, the floating seat mechanism can't work properly Caster Mounting: Holds your casters or glides in precise positions to ensure smooth rolling and proper floor contact Cylinder Support: Creates the compression-fit socket that securely holds your gas cylinder in place under dynamic loads 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 INSTALLATION PROCESS: 1 Remove casters and cylinder 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. 2 Hammer off the old base 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. 3 Install the new base 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. 4 Reinstall casters and test 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: Rubber mallet or dead-blow hammer (protects the base finish) Wood block or thick cloth (to protect the base when hammering) Cardboard or blanket (to protect your floor) 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 Design: 5-Star Configuration Material: Fiber-Reinforced Composite Finish: Midnight Black Weight Capacity: Up to 350 lbs Caster Sockets: 5 (Standard Grip Ring) Installation Type: Compression Fit COMPATIBILITY: 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: TourMax Heavy-Duty Casters (Set of 5) Heavy-duty 4" wheels for tour and venue environments Replacement Gas Cylinders Short, tall, or extra-tall cylinders for different working heights Chair Glides (Set of 5) Replace casters with stationary glides for stage positions