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Sirui K-40x Ball Head

B&H # SIBSRK40 MFR # BSRK40
Sirui K-40x Ball Head

Sirui K-40x Ball Head Back Top View

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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
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You Pay: $165.95

What item is right for you?

Ask our Experts!

The Sirui K-40x Ball Head is an extremely sturdy head with control knobs for pan, tilt, and tension, plus an Arca-style clamp for the included quick-release plate. The pan, tilt, and quick-release knobs are all separate, while the tension knob is integrated into the ball-locking (tilt) knob. The head tilts 90° for portrait orientation, and the quick-release plate features two pop-up pins that prevent camera twist when it's tilted 90°. There's also a video pin on the plate to keep camcorders from twisting.

The interior ball locking of the K-40x head has a sphere tolerance of 0.01mm, and it's equipped with an orientation-memory locking dial. This helps yield a high load capacity of 66 lb. The quick-release clamp features a secondary release button that prevents any inadvertent disengagement of the camera/plate from the clamp, thereby adding to the head's overall security & stability. The Arca-style platform conforms to standard sizes, so you can use compatible plates from other manufacturers.

The three control knobs allow a photographer to exercise extremely fine control over the orientation of the camera, whether it's a DSLR, 35mm, medium-format camera, or even a camcorder. Pan, for instance, can be adjusted while the tilt stays locked, enabling precise movement that's measurable – there are degree markers at the panning base for panoramic photography.

The K-40x is CNC-machined from an aircraft-grade aluminum alloy and anodized with an oxidation treatment that ensures a durable, high-quality finish.

Arca-style quick-release clamp with secondary safety lock
Two bubble levels (horizontal and vertical) on the quick-release platform ensure that your framing hews to the horizon in either portrait or landscape orientation
The friction-control knob, integrated into the ball-locking knob, allows the operator to adjust the resistance of the ball's movement
Quick-release plate is aluminum alloy with a rubberized surface
Stainless steel camera screw
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)
Sirui K-40x Ball Head
  • Quick-Release Plate
  • Pouch
  • Allen Key
  • Limited 6-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    SiruiK-40x Ball Head
     
    4.8

    (based on 33 reviews)

    Ratings Distribution

    • 5 Stars

       

      (27)

    • 4 Stars

       

      (6)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Durable (16)
    • Easy to use (16)
    • Stable (9)
    • Large range of motion (8)
    • Strong clamp (8)

    Cons

      Best Uses

      • Landscape/scenery (21)
      • Sports/action (8)
      • Wildlife photos (7)
      • Travel (6)
      • Video (6)
        • Reviewer Profile:
        • Photo enthusiast (12), Semi-pro photographer (11), Pro photographer (3)
        • Was this a gift?:
        • No (28)

      Reviewed by 33 customers

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      Displaying reviews 1-20

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      5.0

      A rare find!

      By Mars

      from Sebastopol, CA

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Easy to Use
      • Purdy
      • Sturdy

      Cons

        Best Uses

        • Landscape/Scenery
        • Video

        Comments about Sirui K-40x Ball Head:

        This is an amazing ballhead. I had been using a Kirk BH-3 but it was not sturdy enough for my Nikon D-800 with 70-200 f/2.8. This Sirui K-40x does the job smartly. After upgrading to a new Gitzo GT2542 tripod, an expensive BH-55 was not in the budget. No matter, I think this Sirui is just fine. You can hang a cow of of this thing! I discovered this ballhead on dpreview.com, they did a comparison of the big ballheads and rated this one higher than the RRS. You can't go wrong with this one. I'm going to get a smaller Sirui for hiking.

        • Was this a gift?:
        • No

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        5.0

        Sirui K-40x Ball Head

        By Tonik

        from New Jersey

        About Me Photo Enthusiast

        Verified Buyer

        Pros

        • Compact
        • Durable
        • Easy to Use
        • Lightweight

        Cons

          Best Uses

          • Family Photos
          • Landscape/Scenery
          • Sports/Action
          • Travel
          • Video
          • Weddings/Events
          • Wildlife Photos

          Comments about Sirui K-40x Ball Head:

          Use with a Vanguard Auctus 323CT Tripod. Excellent load capacity, adjustability control and ease of adjustment and flexibility. The best buy for the price range; easily outperforms other ballheads of twice the cost. Highly recommended!

          • Was this a gift?:
          • No

          Share this review

          (1 of 1 customers found this review helpful)

           
          5.0

          Does what it should

          By photosb

          from pittsburgh, PA

          About Me Semi-pro Photographer

          Verified Buyer

          Pros

          • Durable
          • Easy to Use

          Cons

            Best Uses

            • Landscape/Scenery

            Comments about Sirui K-40x Ball Head:

            I was in need of an Arca style tripod head for a Kirk L-bracket. This one got great reviews & was much more reasonably priced than the other one's I was looking into. It went easily on to my Manfrotto tripod & holds my Nikon D700 & the 28-300mm Nikkor zoom lens without issue.
            So far everything moves smoothly.
            Small issue negative is that the level is a little hard to see.
            I personally have to get use to the weight of it, getting the friction set just right & placing the tilt opening between two legs when shooting down.
            Now only time will tell.

            • Was this a gift?:
            • No

            Share this review

             
            5.0

            Well made ball head

            By ronfla

            from Central Florida

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Durable
            • Easy to Use

            Cons

              Best Uses

              • Landscape/Scenery

              Comments about Sirui K-40x Ball Head:

              I have an Induro AT413 tripod and on it I had a Vanguard ball head. The vanguard was small and with a big lens had some serious creep. I read the reviews about this head and a lot said it was large. Well let me tell you they're right. It sits on the tripod real nice and won't move. I like the fact that I have one knob to adjust the tension and on for panning. I also like the knob to adjust the camera plate. One thing I noticed is if you put the camera on one way that adjusting knob is hard to reach under the camera. Not a big deal.
              This ball head is very well made. I'll take a star off myself for having to buy things twice because I was cheap on the first purchase. Fess up how many reading this have done the same thing? I thought so...
              I can't compare this to other more expensive heads but i'll say this you won't be disappointed in this and won't regret later that you bought it.

              • Was this a gift?:
              • No

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              5.0

              Smooth as silk

              By dml

              from Spartanburg, SC

              About Me Semi-pro Photographer

              Verified Buyer

              Pros

              • Durable
              • Easy to Use

              Cons

                Best Uses

                • Landscape/Scenery

                Comments about Sirui K-40x Ball Head:

                Mounted K-40x ball head on Manfrotto 190 tripod. This Sirui is smooth as silk. I do HD real estate photography. I use 2 Nikon D7100 with a Tokin
                DX 11-16 mm 2.8 lens and a Sigma 17-50 mm 2.8 lens. The Sirui was Expensive, but worth it.

                • Was this a gift?:
                • No

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                5.0

                Excellent Value

                By Bronco

                from NJ

                Comments about Sirui K-40x Ball Head:

                I have mounted this ballhead on an Induro AT313. My travel tripod is a sirui and I have been very pleased with it so far, so after extensive research, I decided to go with this K40. The build quality seems to be on par with heads that cost at least twice as much. Everything about it is rock solid. I run with a gripped 7d and 70-200 f/4 and it is completely stable; not the heaviest setup and I know this leg/head combo is overkill for it, but I plan to make use of some large telephotos and maybe a few medium formats inthe future. Panning is smooth, but I don't really ever use that feature. The only negatives I would point out is that the head does stand about 25mm higher than others with similar weight ratings, though it does not seem to effect it's stability. Also, the notches on the main friction knob are not all that helpful, but I don't make use of them anyway and that is really just cosmetic. Overall, for this price, you are getting a solid piece of gear that rivals the bigger brands.

                Share this review

                 
                5.0

                Great Product - even better price

                By Yodajohn

                from Minneapolis

                About Me Semi-pro Photographer

                Verified Buyer

                Pros

                • Durable
                • Easy to Use

                Cons

                  Best Uses

                  • Landscape/Scenery
                  • Weddings/Events
                  • Wildlife Photos

                  Comments about Sirui K-40x Ball Head:

                  I ordered the Sirui K-40x at the recommendation of friends and confirmed by B&H. The Ball Head is robust, clean well thought out and manufactured with great care and precision. The quick release plate is solid and works well.
                  I just finished a shoot using the Sirui K-40x with a Canon 5DIII and a 70-200 2.8 loaded on it, the operation was smooth precise and solid I didn't feel any creep at any time and was able to reach and operate the tension knob with precision and ease. The pan knob is well located and with a bit of use I got use to the feel.
                  Overall this was a great recommendation as I am exceedingly happy with this Ball Head. I highly recommend this product.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  Big, heavy duty tripod head

                  By AP

                  from Cape Town, South Africa

                  About Me Semi-pro Photographer

                  Verified Buyer

                  Pros

                  • Durable
                  • Secure
                  • Sturdy

                  Cons

                  • Bulky

                  Best Uses

                  • Family Photos
                  • Landscape/Scenery

                  Comments about Sirui K-40x Ball Head:

                  Decent tripod head. It is big, but feels secure. The panning movement some say is tough, but it is not a video head so the movement for me is acceptable.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  Huge value for the money

                  By Ax

                  from Vermont

                  About Me Semi-pro Photographer

                  Verified Reviewer

                  Pros

                  • Easy to Use
                  • Lightweight

                  Cons

                    Best Uses

                    • Landscape/Scenery
                    • Sports/Action
                    • Travel
                    • Wildlife Photos

                    Comments about Sirui K-40x Ball Head:

                    I bought this used from B&H as a last minute replacement for a failed monopod head. Not much research was done as I was a little hurried to get it before a shooting weekend. I'm ecstatic to say it does the job perfectly! I have used it with the Canon 500mm f4L IS and 600mm f4L IS along with a Gitzo GM5561T (the big travel monopod) primarily and never thought I'd be able to get off this inexpensively for this kind of gear! My cheap gamble has worked thus far. It even feels like it was made for the wideness of that Gitzo. My intention was to sell this off after the weekend, but I think I'm going to keep it. One of my favorite surprise purchases: 5 stars!

                    • Was this a gift?:
                    • No

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                    4.0

                    Solid

                    By Photogoofy

                    from Orlando

                    Comments about Sirui K-40x Ball Head:

                    Just got this after reading several reviews on it. First impression it is solidly built, well finished, works smoothly and holds my nikon d810 with a 200-400 firmly while allowing for smooth paning. The oly reason I give it four stars is because I have not had it long enough to have an opinion on how durable it will be or how well it will operate over the years.

                    Share this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Quality and Affordability

                    By Spud

                    from Cypress, TX

                    About Me Photo Enthusiast

                    Verified Buyer

                    Pros

                    • Durable
                    • Easy to Use

                    Cons

                      Best Uses

                      • Landscape/Scenery
                      • Wildlife Photos

                      Comments about Sirui K-40x Ball Head:

                      I was impressed immediately with the quality of the finish. Then, once put to use, I found that the workmanship was likewise excellent. Machining has been done to extremely close tolerances which supports accurate adjustments all around.

                      • Was this a gift?:
                      • No

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                      5.0

                      Great Value

                      By Photo Shooter

                      from TX

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

                      • Durable
                      • Easy to Use

                      Cons

                        Best Uses

                        • Landscape/Scenery
                        • Sports/Action
                        • Travel

                        Comments about Sirui K-40x Ball Head:

                        I've shopped around for different Ball Heads and the price/value for the K-40x is the best. There are many this size at a higher price (up to 3x). It is extremely well built, smooth and user friendly. I'm about 5'7" tall, when it is mounted on top of my new Sirui T-2205X tripod, the viewfinder is about 2" lower than my eye level and if I stand on my tip toes, I can still see the top Display on my camera.

                        Note that it's just long enough that when mounted to my tripod, the tripod case will not accompdate it... it's just a little too long....but still worth it.

                        I also purchased an extra TY70-2 Arca-Type quick release plate which works great (as it should). This is my first serious ball head/tripod I've purchased. My others were bargan basement items and were not really stable.

                        • Was this a gift?:
                        • No

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                        5.0

                        Great Value

                        By Photo Shooter

                        from TX

                        About Me Photo Enthusiast

                        Verified Buyer

                        Pros

                        • Durable
                        • Easy to Use

                        Cons

                          Best Uses

                          • Sports/Action
                          • Travel

                          Comments about Sirui K-40x Ball Head:

                          I've shopped around for different Ball Heads and the price/value for the K-40x is the best. It is extremely well built, smooth and user friendly. I'm about 5'7" tall, when it is mounted on top of my new Sirui T-2205X tripod, the viewfinder is about 2" lower than my eye level and if I stand on my tip toes, I can still see the top Display on my camera.

                          Note that it's just long enough that when mounted to my tripod, the tripod case will not accompdate it... it's just a little too long....but still worth it.

                          I also purchased an extra TY70-2 Arca-Type quick release plate which works great (as it should). This is my first serious ball head/tripod I've purchased. My others were bargan basement items and were not really stable.

                          • Was this a gift?:
                          • No

                          Share this review

                           
                          5.0

                          Best tripod head I have ever owned

                          By aplifter

                          from Bloomfield, N.J.

                          About Me Photo Enthusiast

                          Verified Buyer

                          Pros

                          • Compact
                          • Durable
                          • Easy to Use

                          Cons

                            Best Uses

                            • Landscape/Scenery

                            Comments about Sirui K-40x Ball Head:

                            This head atop my SIURI N-2204X carbon fiber tripod make a rock solid combination yet light enough to take on hiking trips. Smooth operation with the 55mm ball head and locks down with one quarter turn with no drift

                            • Was this a gift?:
                            • No

                            Share this review

                            (2 of 2 customers found this review helpful)

                             
                            4.0

                            overkill for me

                            By that other guy over there

                            from alexandria, va

                            About Me Photo Enthusiast

                            Verified Buyer

                            Pros

                            • Easy to Use

                            Cons

                              Best Uses

                              • Landscape/Scenery
                              • Sports/Action
                              • Video

                              Comments about Sirui K-40x Ball Head:

                              i will not ever have a need for 77 pounds of camera gear to support so this is overkill.
                              It is a very nice piece of kit.
                              infinitely and easily adjustable.
                              very smooth movement of the ball and the entire head.
                              only negative would be that the two levels are hard to see when my camera is mounted (canon 6d, ef 70-200mm f2.8 lens).

                              • Was this a gift?:
                              • No

                              Share this review

                              (2 of 2 customers found this review helpful)

                               
                              5.0

                              Regarding Sirui K-40x Ball Head

                              By Old Hobo

                              from Pasco,Wa

                              About Me Photo Enthusiast

                              Verified Buyer

                              Pros

                              • Arca Design
                              • Durable
                              • Easy to Use
                              • Price
                              • Smooth
                              • Stable

                              Cons

                              • None

                              Best Uses

                              • Landscape/Scenery
                              • Wildlife Photos

                              Comments about Sirui K-40x Ball Head:

                              This is a large beefy ball head that moves very smooth with no sticktion. I bought this ball head to mount a sigma 50-500-os with pentax k-3,it easily handles this weight.It is stout enough to use with a small astro telescope. By using the drop slot it becomes a decent alt-az mount.this is the easiest way to take astro photos.I am very pleased with this and other sirui tripods I have.

                              • Was this a gift?:
                              • No

                              Share this review

                               
                              5.0

                              Great product K40x Head

                              By Andres Cuellar

                              from Miami, Fl

                              Verified Reviewer

                              Pros

                              • Durable
                              • Easy to Use

                              Cons

                                Best Uses

                                • Landscape/Scenery
                                • Sports/Action
                                • Video

                                Comments about Sirui K-40x Ball Head:

                                Purchased this after trying out the K-20 head Used this ball head to hold a nikon 600mm f4 lens and a Nikon610with batterygrip . Also used a wembley p40plate with C-12 Quick Clamp all on top of a Sirui P-424 4-Section Carbon Fiber Monopod

                                • Was this a gift?:
                                • No

                                Share this review

                                (2 of 2 customers found this review helpful)

                                 
                                5.0

                                Can't be beat for the price

                                By GOVA

                                from Justice, IL

                                About Me Casual Photographer

                                Verified Buyer

                                Pros

                                  Cons

                                    Best Uses

                                      Comments about Sirui K-40x Ball Head:

                                      I put this on Induro AT 313 tripod. It is a big rig, but this is not my traveling combo. The head is very nicely assembled, it looks great and operates smoothly. Beautiful packaging and finish, the plate, screws and knobs are 5/5. Hard to believe it is well below $.This will be very steady combo for D800 and Sigma 180mm Macro. Overkill perhaps, but I'd rather have heavy duty rig rather than flimsy one. It is for stability overall.

                                      • Was this a gift?:
                                      • No

                                      Share this review

                                      (1 of 1 customers found this review helpful)

                                       
                                      5.0

                                      Excellent

                                      By Rayc

                                      from Huntsville,Tx

                                      Comments about Sirui K-40x Ball Head:

                                      Great light weight ball head. No drift even with my 6#
                                      300mm lens-- easy to operate.

                                      Share this review

                                      (1 of 1 customers found this review helpful)

                                       
                                      5.0

                                      Solid Product

                                      By M+D

                                      from Los Angeles, CA

                                      About Me Pro Photographer

                                      Verified Buyer

                                      Pros

                                        Cons

                                          Best Uses

                                            Comments about Sirui K-40x Ball Head:

                                            This Ball is exactly what I was looking for! It has a rock solid feel and holds even a heavy medium format camera setup in place without any problem. Very impressed!

                                            • Was this a gift?:
                                            • No

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                                            Quick Release Plates

                                            Sirui - TY70-2 Arca-Type Pro Quick Release Plate
                                            • You Pay: $48.00
                                             
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