BOYIMU Motorcycle Phone Mount with USB Charger — Stem Mount, 360° Rotation, Secure Grip

BOYIMU Motorcycle Phone Mount with Charger is a handlebar/stem-mounted phone holder that clamps phones securely, charges them via USB, and rotates 360° for reliable on-bike navigation.

This compact motorcycle phone mount installs in the triple-tree stem center hole to give riders a stable platform for GPS, calls, and media. Built with four corner brackets, silicone bands, and a rubberized cradle, it combines mechanical grip with soft contact points to keep phones steady over bumps. The integrated USB charging port lets you power a phone from your bike’s electrical system, while a 1" ball joint delivers portrait and landscape viewing angles.

How does the BOYIMU mount keep my phone from moving on rough roads?

The mount uses a four-bracket frame plus elastic rubber corner bands to lock each phone corner. Soft rubber contact points prevent scratches while the hardware secures the cradle to the triple-tree stem.

• Four rigid brackets hold phone edges to prevent lateral shift
• Silicone/rubber corner bands add tension and shock absorption
• Rubberized cradle surface protects the back of the phone
• Solid stem installation minimizes flex and vibration

Will it charge my phone while I ride and how do I connect it?

The holder includes a built-in USB charging port that can be wired to your motorcycle’s power source. Once connected, plug your phone’s charging cable into the mount to maintain battery while using navigation and apps.

• On-board USB port accepts standard charging cables
• Requires wiring to the motorcycle’s 12V system (professional install recommended)
• Keeps navigation and apps running without draining the phone battery
• Compatible with most charging cables and power banks

Which phones and bikes are compatible with this holder?

The cradle fits most phones with widths from 1.75" to 4.5" and heights from 3.25" to 5.5", covering a wide range of smartphones. The base clamps into triple-tree stem center holes sized 16mm–19mm, matching many sport and street motorcycles.

• Phone fit range: 1.75"–4.5" wide, 3.25"–5.5" tall (e.g., many iPhone and Galaxy models)
• Stem hole fit: 16mm–19mm center hole diameter
• Market examples: BMW S1000RR, Suzuki Hayabusa, GSX-R series, Yamaha YZF, Kawasaki Ninja, Honda CBR
• Not recommended for oversized phones or nonstandard stem mounts without adapter

How adjustable is the viewing angle and how secure is the mounting hardware?

A 1" ball-head joint offers full 360° rotation and a locking mechanism to set orientation. Once tightened, the ball joint holds position through normal riding conditions while still allowing quick adjustments when stopped.

• 360° rotation for portrait or landscape navigation views
• Locking collar secures chosen angle to reduce drift
• Durable metal mounting hardware for stem installation
• Easy hand adjustments when parked; torque-tighten for high-vibration use

Who is this for? The BOYIMU mount is aimed at riders who need a rugged, stem-mounted phone solution for turn-by-turn navigation, ride-tracking, or music control. It suits sportbike and street riders with triple-tree center holes (16mm–19mm) and owners of common smartphone models who want integrated charging and a low-profile, adjustable viewing setup. If you need a mount that balances grip, protection, and on-bike power without bulky clamps or ram mounts, this unit addresses those needs.