Peak Design

Peak Design M-MM-AD-BK-1 Mobile 1" Ball Adapter

Name: Peak Design M-MM-AD-BK-1 Mobile 1" Ball Adapter
Brand: Peak Design
SKU: M-MM-AD-BK-1

★★★★★4.6 (51 reviews)

Upgrade any 1-inch ball mount with Peak Design's magnetic SlimLink adapter for fast, vibration-dampened phone mounting.

$49.95*

✓ In Stock on Amazon.com

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Peak Design Mobile 1" Ball Adapter is designed to serve as the interface between your phone and an existing third-party ball-and-socket mounting system. Rather than replacing your entire mount setup, it upgrades the phone-holding mechanism with Peak Design's SlimLink technology — a dual magnetic and mechanical locking system that lets you snap your phone on with one hand and release it with a push button. This is a meaningful improvement over traditional spring-loaded cradles, which can be fumbling and slow, especially while wearing gloves or in bumpy conditions.

What sets this adapter apart from simpler solutions is its integrated vibration isolator. High-frequency vibrations from motorcycle engines, ATV suspensions, and boat motors have been documented to damage optical image stabilization components in modern smartphones. The isolator in this adapter is specifically engineered to absorb those frequencies before they reach your device. The body is machined from anodized aluminum, keeping the weight to just 83 grams while providing the kind of durability needed for outdoor and powersport environments. The mounting head measures 5.3 x 5.3 x 1.39 cm, keeping the profile compact on your handlebars or dash.

Key Features

UPGRADE YOUR PHONE MOUNT: Transform your existing 1" ball-and-socket phone mount with fast, secure SlimLink connection, push-button phone release and a best-in-class vibration isolator to prevent phone damage.

SLIMLINK MOUNTING TECHNOLOGY: Built-in SlimLink technology provides a magnetic/mechanical lock that’s so seamless, it feels like magic. Requires Peak Design Case or Universal Adapter (sold separately).

UNIVERSAL MOUNTING: Compatible with third-party ball-and-socket mounting systems with 1" ball attachments. Suited for outdoor use like motorcycles, ATVs, boats and more. (Mount sold separately).

BUILT FOR THE ROAD: Machined and anodized aluminum construction is rugged, weather-resistant and made to last. This cell phone holder features a slim design that reduces bulk while maintaining a strong hold on rough terrain or daily drives.

RADICAL PRODUCTS, RADICAL COMPANY: Peak Design creates industry-shifting, lifetime-lasting gear with a mission to leave the world better than we found it. No investors, no venture capital – just innovation on our terms.

Specifications

Brand

Peak Design

Model

M-MM-AD-BK-1

Connection System

SlimLink (magnetic + mechanical lock)

Ball Connector Diameter

1 inch (25.4mm)

Material

Machined anodized aluminum

Weather Resistance

Yes

Mounting Head Dimensions

5.3 x 5.3 x 1.39 cm

Weight

83g (2.93 oz)

Compatibility

Third-party 1" ball-and-socket mounts

Phone Requirement

Peak Design Case or Universal Adapter (sold separately)

Pros & Cons

👍 Pros

SlimLink magnetic-mechanical lock allows one-handed phone attachment and push-button release
Built-in vibration isolator protects phone camera hardware from engine and road vibrations
Machined aluminum construction is lightweight at 83g yet highly durable and weather resistant
Compatible with widely available 1-inch ball mount ecosystems for flexible installation options

👎 Cons

Requires a separate Peak Design case or Universal Adapter on the phone, adding to total cost
Does not include a mount arm or ball socket, so you must already own or purchase a compatible mount
Only fits 1-inch ball systems, not compatible with smaller 20mm or other non-standard ball sizes
Premium pricing compared to simple universal phone cradles

Frequently Asked Questions

Does this adapter come with a phone case or mount arm?

No. The M-MM-AD-BK-1 is the adapter head only. You need a Peak Design case or Universal Adapter on your phone and a separate third-party 1-inch ball-and-socket mount arm.

How does the SlimLink connection attach to the phone?

SlimLink uses a combination of magnets for initial alignment and a mechanical lock that clicks into place, so the phone is held both magnetically and physically for a secure hold.

Is this adapter weather resistant?

Yes. The machined and anodized aluminum construction is designed to be weather resistant, making it suitable for motorcycle, ATV, and boat use in outdoor conditions.

Does the adapter include vibration dampening?

Yes. It has a built-in vibration isolator specifically designed to reduce harmful vibrations from engines and rough terrain that can damage phone camera systems over time.

What size ball mount does this adapter fit?

It fits standard 1-inch (25.4mm) ball-and-socket mounting systems, which is the most common size used by brands like RAM Mounts.