Add-On Triple Monitor Arms: Expanding Beyond 32 Inches
By Racing Simulators - World's Best Sim Rigs | Published: 2026-10-31
Category: Buying Guides
Add-on triple monitor arms let you push past 32-inch screens without a new stand. Learn the weight, width, and VESA rules that decide whether your rig can handle a 55-inch sim racing setup.
Quick answer
Add-on triple monitor arms are worth it when your existing stand can carry the extra leverage and your screens stay within the arm's stated size and VESA limits. For a 55-inch sim racing setup, buy only after confirming the arm's monitor-size rating, the stand's load capacity, and the width of your mounting surface.
Why 32 inches is the usual ceiling for starter triple stands
Most entry triple stands are designed around 27- to 32-inch monitors because the center of gravity stays close to the uprights. A 55-inch screen changes the math: the screen is wider, heavier, and its mass sits farther from the mounting point, so the same stand experiences more leverage.
That does not automatically rule out add-on arms. It means the decision hinges on the stand's rated capacity and the arm's own monitor-size limit, not on the screen size alone.
The VESA pattern is necessary but not sufficient
A VESA triple monitor mount will list a bolt pattern, but matching the pattern only tells you the arm can bolt to the back of the screen. It does not tell you whether the arm can support the screen's weight at full extension or whether the outer arms will clear the center screen.
When a product page does not state a weight rating or a maximum monitor size, treat that as a missing decision input rather than a green light. Ask the seller before you buy.
Width and depth change the ergonomics, not just the load
Large monitors push the outer screens farther apart, which can place the side screens outside your comfortable field of view. You may need to angle them more aggressively or sit farther back, and that affects how you position your wheel base and seat.
Before expanding, measure the total width of three 55-inch screens at your planned angle and compare it with the room and the stand's footprint. Add-on arms solve the mounting problem; they do not solve a room that is too narrow.
Decision rules for expanding to 55-inch triples
- Check the arm's monitor-size rating first: If the add-on arm's stated maximum is below 55 inches, stop. Do not assume a VESA pattern implies size support. A 55-inch screen needs an arm explicitly rated for it.
- Confirm the stand's load capacity: Add the weight of all three monitors plus the arms and compare with the stand's rated capacity. If the stand's capacity is not published, ask before buying. Leverage from large screens makes a close-to-limit setup risky.
- Match the mounting profile: Measure your stand's horizontal profile height and width. The add-on arms must clamp or bolt to that exact profile; a mismatch means the arms will not attach safely. Profile compatibility is a hard stop, not an adjustment.
- Plan the outer-screen angle before you buy: Set up a cardboard mock-up or measure the total width at your intended angle. If the side screens fall outside your comfortable view, consider 32- to 42-inch screens instead. Ergonomics can rule out 55-inch triples even when the hardware supports them.
Product facts
- 980mm/38.58" Add-On Triple Monitor Arms with VESA Mounts — Fits Monitors up to 55": 980mm / 38.58-inch triple monitor add-on arms that fit monitors up to 55 inches and mount onto 80mm high x 40mm horizontal profile. This is the specific case where an add-on arm is rated for 55-inch screens, so check that your stand's horizontal profile matches before ordering.
980mm/38.58" Add-On Triple Monitor Arms with VESA Mounts — Fits Monitors up to 55"
Who should expand to 55-inch triples
Best for
- Sim racers with an existing stand whose published capacity and profile match the add-on arms
- Drivers who want a wider field of view and have room for the total screen width
Not for
- Rigs with a stand that has no published load rating or an incompatible profile
- Small rooms where three 55-inch screens would sit too close or too wide
