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Sirui K-40x Ball Head

B&H # SIBSRK40 Mfr # BSRK40
In Stock
Free Expedited Shipping
You Pay: $165.95
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

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
     
    4.7

    (based on 12 reviews)

    Ratings Distribution

    • 5 Stars

       

      (8)

    • 4 Stars

       

      (4)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Large range of motion (8)
    • Stable (8)
    • Strong clamp (8)
    • Attaches firmly (7)

    Cons

      Best Uses

      • Landscape/scenery (7)
      • Night shots (4)
      • Wildlife (3)
        • Reviewer Profile:
        • Semi-pro photographer (5), Photo enthusiast (3)
        • Was this a gift?:
        • No (10)

      Reviewed by 12 customers

      Sort by

      Displaying reviews 1-12

      Back to top

       
      4.0

      Great for its price!

      By Tony

      from Ft lauderdale, Florida.

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Durable
      • Easy to Use

      Cons

        Best Uses

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

        Comments about Sirui K-40x Ball Head:

        I've used this ball-head for a wedding with a gitzo tripod. It's a great ball-head, its smooth around the ball. The panning is a bit stiff though. Other than that its worn the cost.

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        Beast

        By Prairie Capture

        from Oklahoma

        About Me Semi-pro Photographer

        Verified Buyer

        Pros

        • Durable
        • Easy to Use

        Cons

        • Bulky

        Best Uses

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

        Comments about Sirui K-40x Ball Head:

        This is a really large, professional ballhead that can easily hold a medium kit or larger. I wound up exchanging it for the smaller Sirui K-20 because I travel a lot and don't need the extra weight. The smaller size easily handles my Canon 5d3 and a 70-200 f/4.

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        Very Happy with My Sirui K-40x

        By Bones

        from Sheffield Lake, OH

        About Me Photography Student

        Verified Buyer

        Pros

        • Attaches Firmly
        • Excellent Product
        • Good Stability
        • Large Range of Motion
        • Smooth Operation
        • Strong Clamp

        Cons

        • Nothing Yet

        Best Uses

        • Landscape/Scenery
        • Wildlife

        Comments about Sirui K-40x Ball Head:

        I have been wanting a tripod and ball head for some time. Being new to photography, I really did not know what I wanted or needed. I read all the reviews of all the ball heads out there. I decided on the Sirui K-40x because of the reviews I read and basically a "gut-feeling" I had about this product. I am very happy with my Sirui K-40x. It is very smooth to move around with my equipment (Nikon D7100/70-300 zoom). The workmanship of this product is impeccable. Sirui is very much an "attention-to-detail" type manufacturer. I probably could have gotten away with the Sirui K-30x but, I thought I might as well get the big one and be done, especially for the price. I highly recommend this ball head over the more expensive ones out there just for the cost factor. But, it is also a very "well-oiled machine" and delivers with it performance as well!

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        This is one nice ball head!!

        By Lloyd S.

        from Pasadena, Texas

        About Me Semi-pro Photographer

        Verified Reviewer

        Pros

        • Attaches Firmly
        • Good Stability
        • Large Range of Motion
        • Strong Clamp

        Cons

          Best Uses

            Comments about Sirui K-40x Ball Head:

            You will NOT regret buying this tripod head. It is very well built, smooth, and strong. As outstanding as Really Right Stuff products are, I no longer lust for a BH55. I am very pleased and impressed with the Sirui K-40x.

            • Was this a gift?:
            • No

            Share this review

             
            4.0

            Great quality and price

            By Sirtimateo

            from CA

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Good Stability
            • Large Range of Motion
            • Strong Clamp

            Cons

              Best Uses

                Comments about Sirui K-40x Ball Head:

                Very well made and can be adjusted quickly. Large head will accommodate large camera body and long lens.

                • Was this a gift?:
                • No

                Share this review

                (2 of 2 customers found this review helpful)

                 
                5.0

                Incredible Quality - Price/Value Ratio

                By Anthony M

                from Morgan Hill, CA

                About Me Pro Photographer

                Verified Reviewer

                Pros

                • Attaches Firmly
                • Fantastic Finish
                • Good Stability
                • Great price
                • Large Range of Motion
                • Silky
                • Smooth
                • Strong Clamp

                Cons

                • Heavy
                • Large

                Best Uses

                • Architecture
                • Landscape/Scenery
                • Night Shots
                • Portraits

                Comments about Sirui K-40x Ball Head:

                I can't say how pleased I am with this ball head. I very nearly spend twice this on a well know and loved head. As many of you the DP Review swayed me. I figured with B&H's fantastic return policy - if I wasn't delighted I'd return it. You couldn't pry this out of my hands now!

                First, the name is misleading - it's not a 40mm ball as you'd think at this price! It's 54mm, and the thing is an absolute beast! This is truly full size - so do be aware. 3 spirit levels make sure that you're not going to be confused regarding positioning. The styling of the device takes a little getting used to though - although those odd scallops actually do help in as much as making it easy to grip with gloves on!

                It absolutely laughs at a 6D, grip, 70-200 f2.8. It's overkill. The movement and friction of the head is super smooth and linear. The panning has blown me away - I won't hesitate to get a sidekick it performs so well. Even the little friction adjustment screw in the locking knob is easy to operate. It's truly a joy to handle and use.

                I've been so impressed with this company I bought their M3204X tripod. This replaces years of Manfrotto gear. My only other sources of reference in comparison would be Gitzo and RRS to start with, and the Sirui product stands tall with the rest of them. I see why they're winning awards like crazy.

                Highly recommended - what have you got to lose? B&H will happily take it back - but they won't have to!

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                "Grown-up" tripod head at a great price

                By Kristin the Roadside Photographer

                from Morrison, CO

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                  Cons

                    Best Uses

                    • Video

                    Comments about Sirui K-40x Ball Head:

                    I finally broke down and bought a real "grown-up" tripod head. This was rated in a recent DPReview as best value and I couldn't agree more. It's plenty big enough to hold my Nikon D7100 with 18-300mm lens securely. The knob adjustments work very well and I'm excited to finally have a pan option with a ball head. The head came with a plate and that seems to work fine. The security lock looks to be a lot better and should last longer than and shouldn't wear out like my last one. Yes, it's not a Markins or other top maker, but I think it's well made and a good buy for a lot less money.

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    5.0

                    5 Star Company!

                    By B.J.

                    from St. Bruno de Montarville, Quebec

                    Comments about Sirui K-40x Ball Head:

                    I bought the Sirui K-40 Ball Head for my son this Christmas. He absolutely loves it. Perfectly balanced, easy to use, a great product. 5 stars, as is the service from B & H Photo! Great web site, fast shipping, products extremely well packaged. Love your company!

                    Share this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Great Ball Head, Great Price

                    By Camper

                    from MD

                    About Me Pro Photographer

                    Verified Buyer

                    Pros

                    • Attaches Firmly
                    • Good Stability
                    • Large Range of Motion
                    • Strong Clamp

                    Cons

                      Best Uses

                      • Landscape/Scenery
                      • Night Shots
                      • Video
                      • Wildlife

                      Comments about Sirui K-40x Ball Head:

                      So far this ball head works like a dream. I have it on Manfrotto carbon fiber legs. Originally, I used a Manfrotto pan/tilt head. It was ok, but when using telephoto lenses, the adjustment knobs got in the way, not so witht the Sirui. Also, this head is lighter and I like the Arca-style quick release much better than the Manfrotto.

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      4.0

                      Great Head!!

                      By Thib

                      from Boston

                      About Me Semi-pro Photographer

                      Verified Buyer

                      Pros

                      • Attaches Firmly
                      • Good Stability
                      • Large Range of Motion
                      • Strong Clamp

                      Cons

                      • Heavy

                      Best Uses

                      • Landscape/Scenery
                      • Night Shots

                      Comments about Sirui K-40x Ball Head:

                      Very good and sturdy ball head. Very easy to fix on a tripod and use. Only down point is its weight...

                      Share this review

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      Have the price, 100% performance

                      By JB

                      from Parsippany NJ

                      About Me Semi-pro Photographer

                      Verified Buyer

                      Pros

                      • Attaches Firmly
                      • Good Stability
                      • Large Range of Motion
                      • Strong Clamp

                      Cons

                        Best Uses

                          Comments about Sirui K-40x Ball Head:

                          This is my second Sirui head (wife got the first one) and it is half the price of brand X with 100% of the features.
                          Rock solid, smooth movement. It just feels like it is well engineered.

                          • Was this a gift?:
                          • No

                          Share this review

                          (2 of 2 customers found this review helpful)

                           
                          4.0

                          Well built, smooth panning

                          By Philip D.

                          from Winnipeg, Manitoba

                          About Me Photo Enthusiast

                          Verified Buyer

                          Pros

                          • Attaches Firmly
                          • Good Stability
                          • Large Range of Motion
                          • Strong Clamp

                          Cons

                          • Friction sensitivity

                          Best Uses

                          • Home
                          • Landscape/Scenery
                          • Night Shots
                          • Portraits
                          • Weddings/Events
                          • Wildlife

                          Comments about Sirui K-40x Ball Head:

                          I use this guy loaded with a 7d, battery grip, 75-300mm IS lens, nodal rail, L-bracket and other accessories, and it is more than sturdy enough to handle that load without creeping. The only downside (which isn't really that bad), is the friction isn't as sensitive as I'd like. Its always too strong or too light. An all around good ball head

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                          Quick Release Plates

                          Sirui -  TY70-2 Arca-Type Pro Quick Release Plate
                          • You Pay: $40.00
                           
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