The Foundation Every OFFROAM Build Starts With
Going modular? This is your starting point. A precision-machined aluminum 20mm ball base that mounts clean into your GX 550 dash — no drilling, no adhesive. Pair it with any OFFROAM arm or phone mount.
One Base. Every OFFROAM Setup.
OFFROAM designed their entire mounting ecosystem around the 20mm ball standard. That means whatever arm or phone holder you're running — now or in the future — this base has you covered. No adapters, no compatibility headaches.
The elastomer pad between the base and your dash means your GX 550's interior stays pristine. Pull it off after a trip — no marks, no sticker residue, nothing. Precision-machined anodized aluminum means this base will outlast the vehicle.
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Clean Install, Every Time
⚙️ Installation — Takes About 5 Minutes
No drilling. No adhesive. Uses your GX 550's existing dashboard features. Allen wrench is included — that's all you need. Slot it in, snug it down, done. Removes just as cleanly whenever you want it out.
Frequently Asked Questions
What arms are compatible with this base?
Any OFFROAM arm or phone mount that uses the 20mm ball standard. That covers the full OFFROAM lineup — standard phone mount, MagSafe mount, and any future accessories.
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Why would I buy just the base?
If you already have an OFFROAM arm, this gets you the GX 550-specific base. Or if you're upgrading to a different OFFROAM head unit later and want to keep the base in place.
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Will it damage my dashboard?
No. The elastomer pad protects the contact surface. No marks, no residue — your interior stays factory-clean.
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Does it hold up in heat?
Yes. Anodized aluminum doesn't care about a hot summer interior. No warping, no softening, no failures — unlike plastic alternatives.
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Also from OFFROAM for your Lexus GX 550
Purpose-built aluminum accessories designed specifically for your GX 550.
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Lexus GX 550 Phone Mount
Spring-loaded aluminum grips, 360-degree swivel, one-hand operation. The workhorse mount.
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Lexus GX 550 MagSafe Phone Mount
Drop your MagSafe iPhone with one hand. Available with or without Qi2 wireless charging.
Shop Now
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