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Internet # 311893656

Model # K-78080-0

Reach 12 in. Rough In 1-Piece 1.28 GPF Single Flush Elongated Toilet in White Seat Included

$813.22
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  • Dual-flush offers 1.0 or 1.6 GPF
  • Top-mount, two-button flush
  • Combines with K-4326 bowl
  • View More Details

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Product Details

About This Product

Enhance your bathroom with the sleek sophistication of the KOHLER Reach Comfort Height one-piece compact elongated toilet. Seamlessly integrating tank and bowl with skirted trapway, the toilet's contemporary form not only elevates bathroom aesthetics but also simplifies cleaning. The Comfort Height compact elongated bowl offers chair-height seating that makes sitting and standing more comfortable for most adults. Equipped with innovative AquaPiston technology, the Reach toilet delivers a powerful, efficient flush with just 1.28 gallons per flush, conserving water without compromising performance. The patented ReadyLock system ensures hassle-free installation without the need for floor drilling. A Polished Chrome trip lever adds a touch of refined elegance, and the included Quiet-Close seat prevents slamming for a peaceful experience. A blend of modern design and reliable functionality, the Reach one-piece toilet is a stylish and practical addition to any home.

Highlights

  • 1-piece toilet
  • Elongated bowl offers added room and comfort
  • Skirted trap away simplifies cleaning
  • Comfort height feature offers chair-height seating that makes sitting down and standing up easier for most adults
  • 1.28 GPF
  • Standard left-hand polished chrome trip lever included
  • 2-1/8 in. fully glazed trapway
  • KOHLER exclusive silent fill valve provides a gracious experience by filling the tank quietly
  • Single-flush gravity uses the force of gravity and a precision-engineered tank, bowl and trapway to create a strong siphon during flushing
  • AquaPiston canister allows water to flow out of the tank from all sides (360°), increasing the power and effectiveness of the flush
  • Flush valve's 3:2 ratio harnesses the natural force of gravity and optimizes flush performance
  • Durable canister design has 90% less exposed seal material than a 3 in. flapper, for leak-free performance
  • Light-touch canister flush requires a lower actuation force than a flapper
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Product Information

Internet # 311893656

Model # K-78080-0

Specifications

Dimensions: H 29 in, W 13.625 in, D 28.625 in

Dimensions

Product Depth (in.)

28.625 in

Product Height (in.)

29 in

Product Width (in.)

13.625 in

Details

Bowl Height

Chair Height

Bowl/Seat Shape

Elongated

Color Family

White

Color/Finish

White

Features

No Additional Features

Flushing Technology

Gravity Fed

Flushing Type

Single Flush

Gallons Per Flush

Single Flush: 1.28

Handle Location

Left

Included

Handle, Toilet Seat

MaP Performance Rating

Not Rated

Material

Vitreous China

Returnable

90-Day

Rough In Size

12 inch Rough In

Style

Modern

Toilet Type

One-Piece

Trip Lever Location

Left Side

Warranty / Certifications

Certifications and Listings

ADA Compliant, CSA Certified

Manufacturer Warranty

One Year Limited Warranty

Questions & Answers

What's the model number
ByApr 19, 2026
1 Answer | 
Answer This Question

Hello Rays, this is Keisha with Kohler Co. I am happy to address your question. The model number is 78080-0. Thank you for choosing Kohler.

By|Apr 21, 2026


    I purchased this toilet and it is leaking from the top portion is there anything to place around the lid to prevent water leaking?
    ByNov 15, 2025
    1 Answer | 
    Answer This Question

    Chris, this is Sarah with Kohler Customer Service. I am sorry to hear your Reach toilet is leaking. We want to connect with you directly to learn more about where the water is leaking, and to help find the best solution. Please call our Customer Service team at 1-800-4KOHLER (M-F; 8am-5pm CST). Thank you for choosing Kohler.

    By|Nov 16, 2025


      Does this skirted toilet have Revolution 360 flush? If not, which 1-piece Kohler toilet has both Revolution 360 + skirted toilet design? Thx.
      ByOct 16, 2025
      1 Answer | 
      Answer This Question

      Hi Inquirer, my name is Meli with Kohler Co. I am happy to assist with your question. The Reach toilet K-78080 uses our AquaPiston® flushing technology. To discuss the options in detail, please reach out to our customer care team at 800-456-4537. Thank you for choosing Kohler.

      By|Nov 26, 2025

        (1)

        Does this come with a soft close toilet seat?
        ByMay 14, 2025
        1 Answer | 
        Answer This Question

        April, this is Sarah with Kohler Customer Service. I am glad to address your question. Yes, this model includes the Reveal Quiet-Close seat. Thank you for choosing Kohler.

        By|May 15, 2025


          How does it attach to floor
          ByFeb 16, 2025
          1 Answer | 
          Answer This Question

          Hi Star, this is Vikrant with Kohler Customer Service. I am glad to address your question. The toilet attaches to the floor with the help of cam assembly. Following is the installation guide for your reference : https://tinyurl.com/3jwe2k4j. Thank you for choosing Kohler.

          By|Feb 17, 2025


            How do you remove the seat?
            ByJan 21, 2025
            1 Answer | 
            Answer This Question

            Terry, this is Sarah with Kohler Customer Service. I am glad to address your question. To remove the seat, you can lift up on the hinge covers on both sides to snap them open. Next, you can use a Phillips screwdriver to remove the hinge bolts and remove the seat. Please call our team at 1-800-4KOHLER (M-F; 8am-5pm CST). Thank you for choosing Kohler.

            By|Jan 22, 2025


              Most offset flanges available in general market are only 1 to 2 inches offset. Why does the offset flange Kohler provides with this toilet have such an extensive offset?
              ByDec 4, 2024
              1 Answer | 
              Answer This Question

              Hello Giuseppi, my name is Sarah with Kohler Customer Service. To be sure we are understanding your question correctly, please contact us by phone at 1-800-456-4537 (M-F; 8am-5pm CST). Thank you for choosing Kohler.

              By|Dec 5, 2024


                A customer review claimed leaks in the offset flange provided with this Kohler toilet and included this photo. WAS THIS DEFECTIVE PRODUCT ISSUE RESOLVED AND HOW?
                ByDec 4, 2024
                1 Answer | 
                Answer This Question

                Hello Jose Antonio, this is Keisha with Kohler Co. I am happy to address your question. There can be many variables on why a toilet would be leaking. There is no defect in the Reach toilet. Thank you for choosing Kohler.

                By|Dec 4, 2024


                  Viewing 1-8 of 21

                  Customer Reviews

                  3.7 out of 5

                  • 3.7 out of 44 reviews
                  • 45% recommend this product
                  Filter by:
                  Showing 1-10 of 44 reviews
                  Terrible toilet seats
                  We bought 4 of these toilets for our new home build. We moved in 10/2025. Two of the toilets came with one type of seat the other two came with a different style of seat. Both styles of toilet seats are terrible. They wobble and wiggle because the two plastic prongs that attach the seat around the two bolts have way too much play in them. They are particularly bad in our primary toilet and powder room toilet as they are the toilets that are used the most. These two bathrooms each have a different toilet seat. We ordered these toilets through our builder's plumber.
                  by
                  Response from Kohler Customer ServiceApr 29, 2026
                  Hi KAMW, this is Paige with Kohler Co. I am sorry to hear of your disappointment with the seats included with your Reach toilets. As the manufacturer, we are very interested in providing our customers with a quality product that delivers above expectations and are sorry to learn this has not been the case. Our toilet seats carry a one-year warranty. If we can be of any assistance, please email KohlerCustServ@kohler.com. We are happy to help. Kindly, Paige S. -Kohler Customer Service
                    Missing Parts and Poor Packaging
                    I had a disappointing experience with this toilet. I purchased two units, and both arrived with missing screws, washers, and plastic caps, which are essential for installation. It seems the packaging had been tampered with, as the plastic bags were already opened before I received them, and the packaging differed from what I’d expect from a new product—suggesting they might have been returned. Additionally, unlike other toilets I’ve bought, this one didn’t include a toilet wax ring, which is surprising given the high price of $813. Buyers should be cautious and prepared for potential missing components.
                    by
                    Response from Kohler Product ExpertAug 8, 2025
                    Hello Larry, my name is Meli with Kohler Co. Thank you for sharing your feedback. I sincerely apologize for the inconvenience caused by the missing parts. I understand how important these components are for a smooth and successful installation, and regret that your experience did not meet expectations. We would love the opportunity to assist you directly with obtaining the missing components, please email our customer care team at KohlerCustServ@Kohler.com. We look forward to hearing from you and helping you resolve this issue. Sincerely, Meli A., Kohler Customer Service
                      Beautiful toilet but BOTH leak
                      The plastic flange that is used to attach this toilet to the wax ring is defective on BOTH toilets I purchased. Each one has a small leak. For a toilet that cost $600 it seams rediculous that both would have a defective part.
                      by
                      Response from Kohler Product ExpertJul 16, 2024
                      Hi Gina, this is Autumn with Kohler Co. I am very sorry to hear your newly installed Reach toilets are leaking. I do apologize for the inconvenience and frustration this has caused. This is not at all what you should expect during normal use and we would love to connect with you directly to provide assistance. Please email our team at KohlerCustServ@kohler.com. Thank you. -Autumn F., Kohler Customer Service
                        1 found this review helpful
                        Modern clean lines…one piece.
                        My plumber assembled and installed in 15 minutes. It is sleek modern lines. I wanted a top/two flush but went with the reach because of its simple, clean look. I was surprised how softly and quietly the flush actually is, however fully efficient. It looks beautiful and works lovely as well. Very happy with it.
                        by
                          • Recommended
                          1 found this review helpful
                          seat doesn't fit
                          I just finished a new home build and have placed these toilets in the home. They seem fine, with the exception that the seat does not cover the bowl. The edge of the bowl protrudes out about 3/4" all the way around. I have tried turning around the attachments, and while it helped slightly, it is still bad. It looks as if I purchased an after market seat and bought the incorrect size.
                          by
                          Response from Customer Service Oct 18, 2022
                          MVV, my name is Jessica with Kohler Co. I am sorry to hear of your disappointment with the seat packaged with your Reach toilet. The toilet is packaged with the Saile seat which the lid wraps to completely cover the elongated seat ring for a unified look; the leftover bowl around the edge of the ring is how the seat is designed. If we may further assist in any way, please contact our Customer Service team at 1-800-456-4537. We are here to help. - Jessica P. Kohler Customer Service.
                            This customer chose to rate the product and not provide text.
                            by
                            • Verified Purchase
                            Remain away from this toilet and save your money. I have three other Kohler Toilets in my house they are great but Reach has not worked from day one, even after completely rebuilding it water leaks from the tank to the bowl
                            by
                            Response from Kohler Product ExpertMar 25, 2026
                            Hello, this is Quinn with Kohler Co. I am sorry to hear your toilet is leaking. We are more than happy to help resolve this. When convenient please reach out to us at KohlerCustServ@kohler.com so we can find solution. Quinn Kohler Customer Care.
                            • Verified Purchase
                            This customer chose to rate the product and not provide text.
                            by
                            • Verified Purchase
                            This customer chose to rate the product and not provide text.
                            by
                            • Verified Purchase
                            Beautiful Design
                            This is a really nice toilet. So easy to clean because use of the smooth lines. Keeps clean longer inside because of the newer technology. Very nice design. The only suggestion we have is to make the top lid stronger. If you want to sit on the outside lid, it seems very flimsy and like it could break or dent easily. We were surprised for the money we paid, we would have thought it would have been more sturdy like our old cheap toilet. They missed the boat on the top lid!
                            by
                            • Verified Purchase
                            Showing 1-10 of 44 reviews