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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 15 reviews)

    Ratings Distribution

    • 5 Stars

       

      (11)

    • 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 (4), Pro photographer (3)
        • Was this a gift?:
        • No (12)

      Reviewed by 15 customers

      Sort by

      Displaying reviews 1-15

      Back to top

       
      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

                   
                  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!

                                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

                                      (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

                                      Share this review

                                      Quick Release Plates

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