# Bicycle phone holder extra digital HB390052 stem mount, black

**URL:** https://aio.lv/en/product--extra-digital-hb390052--4254269
**Data updated:** 2025-12-29 15:54 (EET)
**Category:** Smartphone & Tablet Mounts
**Manufacturer:** extra digital
**Manufacturer code:** HB390052
**EAN:** 9990000390052
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--extra-digital-hb390052--4254269

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Bicycle phone holder extra digital HB390052 is a stem-mount bracket in black designed to secure a smartphone to the bike's stem. It provides a stable attachment point for navigation, fitness apps and hands-free use while riding. Easy to install on most stems, it keeps the phone accessible and visible without obstructing controls.

## Long description

Bicycle phone holder extra digital HB390052 is a stem-mount bracket in black designed to secure a smartphone to the bike or motorcycle stem. The base is made of aviation-grade aluminum alloy for long-term durability, and the holder supports both vertical and horizontal phone orientation. The product includes a security lock and an adhesive adapter for fixing the adapter to a phone case; the adapter is supplied with strong industrial 3M VHM adhesive for single-time installation.
Advantages
The stem mount is lightweight yet strong, combining an aluminum alloy base with PC components for reliable performance. The construction resists deformation and oxidation, and the holder allows 90° rotation between portrait and landscape views. The quick-mount system uses industrial 3M VHM adhesive for a secure bond to flat, hard cases, and the kit includes mounting screw and wrench for direct stem installation.
Suitable for
Attaching a smartphone to bicycle stems (road, mountain, city)
Mounting a phone on motorcycle stems where stem diameter and M6 screw fit
Using navigation, fitness apps and hands-free phone access while riding
Key specifications
Mounting location: bike / mountain bike / road bike / motorcycle stem
Mounting hole diameter: 10.2 mm
Screw type: M6, 5 mm
Rotation angle: 90° (portrait/landscape)
Materials: aluminum alloy (base), PC (holder)
Size: 85 x 40 x 25 mm
Weight: 105 g
Color: black
Included: phone holder, adhesive adapter, screw, mounting wrench
Warranty: 24 months
How to use
Mount the holder on a compatible stem using the supplied M6 screw and wrench. For the adhesive adapter, clean and dry a flat, hard phone case surface, then stick the adapter firmly using the supplied 3M VHM adhesive; press and hold to ensure full contact. The adapter is intended for single-time installation—do not attempt to reuse after removal. Once installed, attach the phone to the holder and lock it with the security lock; rotate the phone to the desired 90° orientation if needed.
Usage recommendations
Do not attach the adhesive adapter directly to a phone; apply it to a rigid, flat case only. The adhesive is not suitable for silicone, rubber, wooden or rough surfaces. If the adapter is removed, it is not reusable—order spare adapter product code HB390076. Verify compatibility with your stem diameter and M6 screw before installation.

## FAQ

### How much does the Bicycle phone holder extra digital HB390052 cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All extra digital products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized extra digital service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/4254269/10971405_large.webp