Sirui K-40x Ball Head

Model #BSRK40

Sirui bsrk40 1
Sirui bsrk40 1
Sirui bsrk40 2
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Lowest Price Online: $135.23


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lowest price online $135.23
average price online $138.61

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General Information

Load Capacity 77 lb (35 kg)
Ball Sphere Diameter 2.13" (55mm)
Quick Release Yes, with Arca-style plate
Spirit Level Yes, 2
Tension Control Yes, integrated into tilt-control knob
Separate Panning Lock Yes
Pan 360°
Tilt 90°
Head to Tripod Mounting Thread 3/8"-16 Female
Camera Mount Plate 1/4"-20 Male
Height 4.92" (12.5 cm)
Maximum Diameter Not specified by manufacturer
Weight 1.54 lb (0.7 kg)
User Reviews
B h photo.34921152
17 November 2016

This is a good bang for the buck ball head for weights well under the specified 77.1lbs. I have a couple of specific uses that I need it to perform for: 1. It must be able to happily hold a 400mm 2.8 with my d810 and grip. I doesn't. Both the plate and ball head drift don't work for me.

B h photo.34921152
17 April 2018

I needed a larger head to stabalize my D850 and longer lenses. Most of the stuff out there is in the $400 range. This has the same diameter ball, smooth and rock solid locking mechanism and no extra weight at half the price

B h photo.34921152
10 December 2017

I bought this to replace a Monfrotto head for my Monfrotto tripod. Needed something easy to adjust, but extremely secure. Canon 5D MK4 with 100-400 lens needs to be really stable to avoid vibrations. This did the trick. I have a Sirui k-20x, but it isn't adequately stable for my needs.

B h photo.34921152
20 November 2017

Very rigid for my Nikon D500 and the pan feature is very handy.

B h photo.34921152
12 November 2017

I can't praise this ballhead highly enough. Very solid, beautifully engineered and smooth. Attention to detail is sublime. I use it with a dslr and 300mm lens. No sign of slipping or droop even over long periods.

B h photo.34921152
24 September 2017

Works well, Quality built. I decided to save a little money by going with the K-40x instead of spending three times the money on another pro head. Simple, easy to use,and high quality.

B h photo.34921152
16 August 2017

Love this ball head mount. Holds a lot of weight stable on my tripod.

B h photo.34921152
8 August 2017

Very impressed and happy with this ball head, especially for the money. Extremely smooth and very solid. I put my new Sony FE 100-400 w/ 2X extender on it and shot the moon. Effectively 1200mm on my A6300.

B h photo.34921152
1 August 2017

The fit and finish has the same appearance and luxurious feel of my Really Right Stuff accessories. The Surui arca-style clamp works perfectly with my RRS Nikon camera plate. I am delighted with the quality. The ball movement has the same feel of high quality.

B h photo.34921152
27 May 2017

This ball head was an upgrade from a very basic Flashpoint ball head. Night and day difference. I had read several reviews comparing different ball heads and this one always got excellent reviews and for the price I'm happy I went with the Sirui. First thing I noticed is the quality of the item.

Product Highlights
  • Knobs for Pan, Tilt & Tension
  • 77 lb Load Capacity
  • Quick-Release Plate with Anti-Twist Pins
  • Arca-Style Clamp for Quick Release
  • 90° Tilt, 360° Pan
  • CNC-Machined Aluminum Alloy
In The Box
  • Sirui K-40X Ball Head
  • Quick-Release Plate
  • Pouch
  • Allen Key
  • Limited 6-Year Warranty
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