# Ball head Sirui KS-40 — aluminium, black, 90 mm height, 500 g

**URL:** https://aio.lv/en/product--sirui-ks-40--11855968
**Data updated:** 2026-03-09 17:31 (EET)
**Category:** Tripods
**Manufacturer:** Sirui
**Manufacturer code:** KS-40
**EAN:** 6952060059655
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 138.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 114.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sirui-ks-40--11855968

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Sirui KS-40 is an aluminium ball head in black finish designed for camera support. It has a 90 mm height and weighs 500 g, providing a compact, sturdy mounting solution with smooth ball movement and secure locking for photographic and videographic use. Suitable for tripods and monopods where precise camera positioning and load stability are required.

## Long description

Sirui KS-40 is an aluminium ball head in a black finish designed to provide compact, stable camera support. With a height of 90 mm and a weight of 500 g, the KS-40 combines low center-of-gravity design and precision mechanics to allow smooth ball movement, secure locking and reliable payload support for photographic and videographic setups. The head features an Arca-compatible quick release plate and a 360° panning Arca-Swiss plate for flexible horizontal adjustment, plus a dual-lock safety system and an included magnetic Allen key for convenient adjustments.
Advantages
The KS-40 uses a low-gravity design that lowers the center of gravity to reduce vibration and improve stability during long exposures and low-light shooting. Friction adjustment and a rotating knob that "hugs" the ball deliver consistent locking force and allow fine tuning to match the weight of different camera setups. A quick release flip lock with a safety bolt enables one-handed mounting while preventing accidental release. The included Arca-standard plate and 360° panning plate support both landscape and vertical orientations without changing accessories.
Suitable for
Travel and studio photography with mirrorless or DSLR cameras
Long exposure and low-light landscape photography
Portraits and vertical framing using Arca-style plates
Videography where smooth pan control is required
Use on tripods and monopods that accept a 3/8" mount
Key specifications
Material: aluminium construction for a balance of strength and weight
Height: 90 mm
Weight: 500 g
Maximum payload: 25 kg
Mounting thread: 3/8-16" base interface
Finish: black anodised surface
Quick release: Arca-compatible plate included; 360° panning Arca-Swiss plate for horizontal adjustment
Locking: ball lock with friction adjustment and dual-lock (flip lock + safety bolt)
How to use
Attach the KS-40 to your tripod or monopod using the 3/8-16" base interface and secure it hand-tight. Fit the included Arca-compatible quick release plate to your camera’s tripod socket and clamp it into the flip lock; use the safety bolt to add secondary security. Adjust the friction control to match your camera and lens weight so the ball moves smoothly without slipping. Use the main ball lock to fix camera position and the panning base to make controlled horizontal rotations when needed. The magnetic Allen key stored on the head allows tightening or fine adjustment of the flip lock and other fasteners.
Usage recommendations
For best stability, set friction slightly higher than the minimum needed to hold your equipment and then lock the ball. When using heavy lenses, verify the safety bolt engagement after mounting. Regularly check and, if necessary, tighten the flip lock and panning base with the supplied Allen key to maintain consistent performance.

## Specifications

| Feature | Value |
|---|---|
| Angle of rotation | 360 ° |
| Rotating | Yes |
| Number of products included | 1 pc(s) |
| Connecting thread | 3/8-16 |
| Packaging content | Head, Arca Quick Release plate (TY-55KS) |
| Screws included | Yes |
| Product type | Ball head |

### Features

| Feature | Value |
|---|---|
| Material | Aluminium |
| Product colour | Black |
| Maximum weight capacity | 25 kg |
| Quick release system | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.5 kg |
| Height | 90 mm |

## FAQ

### How much does the Ball head Sirui KS-40 cost, and is it available for purchase?

The price is 138.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 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 08.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Ball head Sirui KS-40 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Sirui 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 Sirui 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/11855968/67265637_large.webp