Product Detail Page

Create Account

<ul>
<li>Free shipping on orders $49+</li>
<li>Exclusive offers and product updates</li>
<li>Faster checkout with saved info</li>
<li>Track orders and view history anytime</li>
<li>Save to lists for easy project planning</li>
<li>Register product for warranty support</li>
</ul>

Your email has been sent.

Reset Your Password

Enter your email to receive news, promotions, and information about Kohler.

About Us

Stores

Help

Resources

Thank you! You’ll be the first to know about our latest product introductions, creative design solutions, and tips for how to get the job done. 
 
Continue to explore <a href="/content/kohler/us/en.html">Kohler.com</a> while you wait for your first email.

<h2>Get Ready!</h2>

This Item is currently Out of Stock on Kohler.com

You are leaving KOHLER.com.

aem-GridColumn aem-GridColumn--default--12

Main Global Footer Experience Fragment

Paige S.

I love the K-5871-5UA3-0 Riverby (undermount) sink; BUT the accessory caddy is very poorly & cheaply designed.  The little white cutting board is impractical because as soon as you use it, it develops dark discolored lines all over it from the knife marks. Very cheaply made.  But what is really the worst is the steel rack is designed so poorly that it actually scratches the porcelain surface of your beautiful new sink!!  Nobody who spends this kind of money on a  beautiful new sink wants to see scratches caused by the very accessories that were sold with and came with the sink!  When I called Kohler about it, they made no apologies and told me I could buy some paint to fix my sink that got scratched from the accessory. They sold me with it.   They also said I could try a certain kind of cleaner that Kohler sells, so I will try that.  But clearly, Kohler needs to rethink the accessory line that comes with this sink and engineer something much more deserving of the Kohler name & price tag.  Because details do matter, and I expect more out of Kohler.

Very poor quality accessories actually damage the sink porcelain!

Beautiful product. I only wish it was not so heavy and could be installed directly to the countertop.

Timeless and beautiful

Lisa A.

I bought this product and have had it in use for about 18 months: I would say it sees medium use and we even use a silicon protector to stop scratches but this sink stains and looks terrible. I wouldn’t suggest purchasing it as you will end up stuck with a stained sink and depending on how it’s installed be very hard to fix.

Stains can’t be removed

Sarah S.

I bought this sink in March 2024, and had it installed about a month later. We did a whole house renovation and I was looking forward to having matching Kohler sinks throughout. However, after this first Riverby sink was installed, I cannot recommend this brand. The bottom of this sink has discolored and stained after less than 7 months of use. I purchased the bottom grates and used those too. Stay away from the white cast iron. I will now need to replace this thousand dollar, 7-month old sink.

Find another sink

Quality costs money. Amazing product. Template for counter top layout was perfect.

Just spend the money! Well worth it. Drains perfect. Perfect finish

Meli A.

This is a great sink if installed correctly. However my interior designer, her general contractor and countertop fabricator failed to look at the details. Initially, They said that there was no template for the sink. I find it hard to believe that a multi billion dollar company like kohler would not provide a template for installation. Then they said there were four options on a template for the sink.  Upon further review, We are unable to modify the countertop and I am not able to use the accessories.  I am disappointed because I was Looking forward to using this sink exactly as it was intended for, as a workstation sink. I paid an upcharge for nothing. The sink is well made and gorgeous just make sure you micromanage the install no matter how many “professionals” you have hired to do the job for you.

Nice sink if installed properly

This is a lovely big sink. However, the accessories that come with it are too small, so I am befuddled as to how to dry things without them getting wet right away. I reverted to using an over the counter silicon dryer but it doesn't quite fit with the soap dispenser and it slips as well. If I could figure out a good way to manage my washed dishes, I'd raise the star level to 4. Also, I drilled holes in the 'washing cup' because it was constantly a pool of yucky water, makes more sense to have that as a drying cup for utensils, but with water gathering at the bottom, it turned gross.

Love the size, but accessories are a downfall

Master Homepage Only - Global Header Experience Fragment

Bring elegant versatility to compact spaces with the KOHLER Riverby 25" undermount single-bowl kitchen sink, a refined choice for smaller kitchens that does not compromise on durability. Whether you are interested in a primary, secondary, bar, or utility sink, the generous single-bowl provides ample room to soak and wash large items, while beveled front and back edges help keep water contained. The gently sloped bottom toward a single offset drain minimizes pooling and increases workspace in the bowl and storage beneath. Crafted from enameled cast iron, this undermount kitchen sink resists chipping, cracking, and burning, so it holds its beauty through years of daily use. Five oversized faucet holes make installing your faucet and favorite accessories simple, and the included custom-fit sink rack protects the surface from everyday wear. For a small kitchen that deserves lasting style and dependable performance, the Riverby sink delivers both with quiet confidence.

Elegant and versatile, the K-5872-5UA1 cast iron sink is sized to fit small spaces as a primary, secondary, bar, or utility sink. Includes sink rack.

Riverby®25" undermount single-bowl kitchen sink

Riverby®
25" undermount single-bowl kitchen sink