Ball Top Cap Adaptor 4x4 Car Kits - iPhone

$40.14 ~~$54.98~~ In stock

Use Quad Lock® to securely mount your iPhone in your vehicle by combining our Ball Top Cap Adaptors with 1" or 20mm socket arms.

EASY TO INSTALL

No tools needed. The familiar ball design make it quick and easy to install with your existing setup. Once you've upgrade to Quad Lock mounting, attaching your phone is as easy as twist, lock. Or add our MAG Heads for even easier and secure magnetic attachment.

MINIMALISTIC DESIGN

Reduce the size of your current mount so that your iPhone sits discreetly in either portrait or landscape mode. Simply twist and lock to attach and detach your phone.

PROTECTIVE / IMPACT RESISTANT CASE

The Quad Lock® iPhone Cases are made from a tough, nylon core and impact absorbing TPU edge-to-edge outer shell to protect your iPhone. With a slim profile and soft touch material, it is perfect for everyday use.

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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Violet R. ★★★★★ Aug 20, 2026

The ball head fits my 1" socket arm perfectly, and the fact that there’s zero tools involved means I swapped everything out in the driveway before work. Snaps in tight with no wobble, and my phone stays put even on rough pavement. Exactly what I needed for my truck setup.

Zoe ★★★★★ Aug 19, 2026

Took maybe two minutes to swap these onto my existing socket arm, and the ball fit snugly with zero wobble on the first drive. No tools needed, just pushed it on and tightened the collar. Exactly what I needed for a cleaner 4x4 setup.

Julian Q. ★★★★★ Aug 18, 2026

Swapped my old mount setup for these ball adaptors and the install took me less than a minute, no tools at all. They fit the 1" socket arm perfectly and my phone hasn't budged on bumpy roads since.