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Sirui K-40x Ball Head

B&H # SIBSRK40 Mfr # BSRK40
Usually ships in 7-10 business days

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Estimated arrival at B&H is 7-10 business days. An authorization for this product will be processed upon placing the order. You will be charged for this item at the time of Shipment.
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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

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 17 reviews)

    Ratings Distribution

    • 5 Stars

       

      (13)

    • 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)
    • Durable (3)

    Cons

      Best Uses

      • Landscape/scenery (8)
      • Night shots (4)
      • Sports/action (3)
      • Video (3)
      • Wildlife (3)
        • Reviewer Profile:
        • Semi-pro photographer (5), Photo enthusiast (4), Pro photographer (3)
        • Was this a gift?:
        • No (14)

      Reviewed by 17 customers

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      Displaying reviews 1-17

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      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

        (1 of 1 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

               
              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

               
              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

                    Share this review

                     
                    5.0

                    Recommend

                    By Tohm

                    from Crown Point, Indiana

                    About Me Photo Enthusiast

                    Verified Buyer

                    Pros

                      Cons

                        Best Uses

                          Comments about Sirui K-40x Ball Head:

                          Great value, recommend

                          • Was this a gift?:
                          • No

                          Share this review

                          (1 of 1 customers found this review helpful)

                           
                          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

                            (1 of 1 customers found this review helpful)

                             
                            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!

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                                        (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

                                              (3 of 3 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: $48.00
                                               
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