The Kohler Cimarron is the toilet buyers reach for when they want a strong, clog-resistant flush without giving up clean styling or a quiet operation. It is built around Kohler's Class Five canister flush, a system designed to release nearly the full tank of water at once for a fast, complete bowl clear. This review compares the Cimarron's published specifications, its independent MaP flush-test score, water use, EPA WaterSense certification and the recurring themes across thousands of aggregated owner reviews, so you can decide whether it deserves a spot in your bathroom.
Research updated June 2026.
The Kohler Cimarron is our top pick for buyers who want strong, quiet flushing in a refined two-piece body. Its Class Five canister flush opens a wide 3-1/4 inch valve to clear waste fast, reaching up to a 1000-gram MaP score on an efficient 1.28 gallons. It runs quieter than a TOTO Drake and looks cleaner, making it the comfortable middle choice between power and polish.
The Kohler Cimarron occupies a sweet spot that few toilets manage to hit. It flushes nearly as hard as the brawniest gravity toilets on the market, yet it does so quietly and in a body that looks at home in a remodeled bathroom rather than a utility closet. For a great many buyers that balance is exactly what they are after: a toilet that ends the plunging without forcing them to accept the plain, utilitarian shape that often comes with maximum flush power. The Cimarron has been a staple of Kohler's lineup for years, and the brand keeps refining it with concealed-trapway skirted versions, comfort-height bowls and the option of its slick AquaPiston canister.
This review looks past the showroom appeal and at the engineering and data that actually predict how a toilet performs. We compare the Cimarron's published specifications (flush valve diameter, trapway width, bowl shape, rough-in), its independent MaP (Maximum Performance) flush-test score against rivals graded by the identical protocol, its WaterSense certification and gallons-per-flush figure, and the consistent patterns across thousands of aggregated owner reviews covering clogging, noise, cleaning and long-term reliability. Where the Cimarron has genuine weaknesses, we name them plainly. To see how it stacks up against the whole field, our pillar roundup of the best flushing toilets places the Cimarron alongside its strongest competition.
We do not install the Cimarron in a lab and flush it ourselves, and we will not pretend we do. Instead we read Kohler's published specifications, compare the Cimarron's independent MaP flush-test score against rival toilets graded by the same standardized protocol, factor in WaterSense certification and gallons per flush to reward power that stays efficient, and study the recurring themes across thousands of aggregated owner reviews. No payment buys a favorable verdict on this page.
The key published specs and the independent flush score that matter most when judging this toilet.
| Toilet | Best For | MaP | GPF | Rating | Check Price |
|---|---|---|---|---|---|
| Kohler Cimarron | Quiet, refined power | Up to 1000 g | 1.28 | 4.6 | Check price |
| Kohler Highline | Budget Class Five | 800 g | 1.28 | 4.5 | Check price |
| Kohler Santa Rosa | Compact one-piece | 1000 g | 1.28 | 4.5 | Check price |
| TOTO Drake | Maximum raw power | 1000 g | 1.28 | 4.8 | Check price |
| American Standard Champion 4 | Huge waste loads | 1000 g | 1.6 | 4.6 | Check price |
A note on model codes. The Cimarron is sold under several catalog numbers depending on bowl shape, flush volume, skirted versus exposed trapway and whether it is the standard Class Five or the upgraded AquaPiston canister. The most common configuration buyers reach for is the comfort-height, elongated, 1.28-gallon two-piece (often listed as K-31621 for the complete combo, or the older K-3609 and K-3589 numbers for bowl and tank sold separately). Spec figures and the exact MaP score vary by SKU and flush volume, so always confirm the rough-in, bowl shape, GPF and whether a seat is included before you order. Many Cimarron listings sell the bowl and tank as separate parts, so double check you are buying a complete pairing.
Flush power is the reason most people put the Cimarron on their shortlist, and it is built around Kohler's Class Five canister flush. Where a typical gravity toilet uses a rubber flapper that opens a 2 to 2-1/8 inch valve, the Class Five system uses a canister that lifts straight up to expose a much wider opening, roughly 3-1/4 inches across. That larger, unobstructed port lets water exit the tank faster and from 360 degrees rather than from one side, so the bowl fills quickly and a strong, fast siphon forms that grabs waste and carries it down the trapway in a single decisive pull.
In independent MaP testing, which measures how many grams of solid waste a toilet clears in a single flush under an identical protocol across every brand, the Cimarron grades up to 1000 grams in its strongest configurations, with many variants landing in the 800-gram range. Either way it operates near the top of the gravity class, where plenty of competent toilets only reach 600 to 800 grams. That figure comes from the third-party MaP program rather than Kohler marketing, which is why the Cimarron appears in our roundup of the best 1000-gram MaP toilets. In aggregated owner reviews the practical result shows up clearly: reports of clogs and double-flushing are uncommon, and households upgrading from a weak low-flow toilet describe the change as immediate.
The Cimarron is the toilet we recommend when a buyer wants serious clog resistance but cannot live with the plain looks or louder flush of a hardcore performer like the Drake. The Class Five canister gives you most of the power in a quieter, better-looking package. If your bathroom only clogs occasionally and styling matters to you, the Cimarron is the smarter buy. If your bathroom clogs constantly no matter what, step up to a maximum-rated 1000-gram model.
The standard modern Cimarron uses 1.28 gallons per flush and carries EPA WaterSense certification, which means it meets the program's standard of using at least 20 percent less water than the federal 1.6-gallon maximum while still passing flush-performance criteria. The notable part is that the Cimarron earns its strong MaP score on that reduced volume, so it is not buying power with extra water. A 1.6-gallon version still exists for buyers on older drain lines who want maximum bowl wash, but for nearly everyone the 1.28-gallon model is the smarter pick.
Over a year of normal household use that lower volume adds up to a meaningful water saving, and in regions that offer toilet rebates a WaterSense model can qualify. The Cimarron is one of the toilets we point to in our roundup of the best EPA WaterSense toilets, where its blend of efficiency and real flush power is exactly the balance the certification is designed to reward. Kohler also offers a dual-flush Cimarron in some markets that adds a 1.0-gallon light flush for liquid waste, dropping average consumption further for households focused on conservation.
Among gravity toilets, the very top of the field is occupied by the TOTO Drake with its 3-inch valve and the American Standard Champion 4 with its enormous 4-inch valve, both of which grade 1000 grams. The Cimarron sits right alongside them in its strongest builds thanks to the 3-1/4 inch Class Five canister, while delivering that power more quietly. If you want force beyond what any gravity toilet provides, a pressure-assisted unit using a Flushmate tank or a Gerber pressure system moves water faster and far louder, which we cover in our guide to the best pressure-assisted toilets. For most homes, though, the Cimarron delivers all the power that is actually needed without the bang.
Clog resistance comes from two things working together: how much water arrives in the bowl at once, and how smoothly that water and waste can escape. The Cimarron handles the first half with the wide canister valve, which dumps water fast to build a powerful siphon, and the second half with a smooth trapway that resists the streaking and snagging that cause partial clogs. Skirted versions hide the trapway for a cleaner look but keep the same internal passage. Buyers dealing with a chronically problematic bathroom should also read our guide to the toilets that never clog, where the Cimarron is a recurring recommendation alongside the strongest TOTO and American Standard models.
Styling is where the Cimarron earns its keep against more powerful but plainer rivals. It has a clean, gently contoured profile that looks current in a remodeled bathroom, and Kohler offers it in skirted versions that conceal the trapway entirely for a seamless side that wipes down in one pass. It comes in Comfort Height, sitting around 16-1/2 to 17-1/4 inches to the rim depending on configuration, a chair-like height that meets ADA guidance and that owners with knee or back concerns consistently appreciate. A round-front version exists for smaller bathrooms, though the elongated bowl is the more popular choice.
On cleaning, the Class Five canister flush does a thorough job rinsing the bowl, and the optional skirted body removes the awkward gap between an exposed trapway and the floor that normally collects dust. Some Cimarron variants also offer Kohler's CleanCoat or comparable glazing that resists buildup. The two-piece seam between tank and bowl remains a spot that needs occasional wiping, as on any two-piece toilet. If a fully seamless one-piece is your priority, the Kohler Santa Rosa uses the same flush philosophy in a single body, and we compare body styles in our look at the best flushing one-piece toilets.
Noise is a real strength here. The Class Five canister flush is noticeably quieter than the TOTO Drake's G-Max siphon jet, producing a smooth rush rather than a hard rush of water. Aggregated owner reviews frequently single out the quiet operation as a reason they chose the Cimarron over louder competitors, and it is far quieter than any pressure-assisted toilet. For a bathroom near a bedroom or a shared wall, that quieter flush is a genuine advantage, and buyers chasing the most silent option can compare alternatives in our guide to quiet flush toilets.
The Cimarron fits the standard 12-inch rough-in (the distance from the finished wall to the center of the floor drain) that covers most homes, and Kohler offers it primarily in that size, so confirm your measurement before ordering since the Cimarron has fewer alternate rough-in options than some TOTO models. As a two-piece, it arrives as a separate tank and bowl, which keeps each piece lighter and easier to carry into a tight bathroom than a heavy one-piece. Owners with basic DIY confidence routinely report a straightforward install, helped by Kohler's included hardware and clear instructions.
Parts support is solid given Kohler's scale. The Class Five canister is a Kohler-specific design, and because the Cimarron sells in such volume, replacement canister seals, flush assemblies and fill valves are widely available through Kohler and major retailers. The canister seal is the component owners occasionally mention replacing after years of service if the toilet starts to run or weakens, and it is a reasonably priced, accessible fix. One recurring note in owner reviews is that the canister seal can be slightly more sensitive to hard-water mineral buildup than a simple flapper, so periodic cleaning helps it last. When you weigh serviceability into long-run ownership cost, the Cimarron remains a sensible value. Check the current price on Amazon to see where it lands today.
The Cimarron sits in a smart spot on price-to-performance. It costs more than the most basic builder-grade toilets but delivers flush engineering and styling that compete with toilets costing considerably more, and it undercuts most designer one-pieces while flushing just as effectively. For buyers who want a toilet that works quietly for a decade, looks good doing it and stays serviceable through Kohler's parts network, the value case is strong, which is why the Cimarron keeps appearing in our roundup of the best flushing toilet for the money.
The MaP (Maximum Performance) test measures how many grams of soybean-paste test media a toilet removes in a single flush under a standardized protocol, giving a brand-neutral way to compare flush strength. Many older low-flow toilets graded poorly, sometimes under 350 grams, which is where the reputation for weak flushing began. Modern high-efficiency toilets routinely exceed 600 grams, and the best, including the strongest Cimarron builds, reach the 1000-gram ceiling. When you shop, treat a MaP score under 500 grams as a warning sign and a score of 800 or more as a confident pick. Because Cimarron variants range from roughly 800 to 1000 grams, it is worth confirming the exact SKU's score before buying.
The Cimarron is the toilet to buy when you want serious clog resistance and a quiet flush in a body that actually looks good in a remodeled bathroom.
The Class Five system pairs a wide 3-1/4 inch canister valve with a smooth trapway, the formula behind its up-to-1000-gram MaP score and the reason owner reviews so rarely mention clogs. It is a gravity flush, so there is no loud bang like a pressure-assisted toilet, and it runs noticeably quieter than a TOTO Drake's G-Max siphon jet.
Aggregated owner reviews are consistently positive, with repeated praise for quiet operation, clean styling and reliable clearing. The most common criticisms are an occasional canister-seal replacement after years of service, a slight sensitivity to hard-water buildup on that seal, and a single standard rough-in option, all minor against the overall flush quality.
This is the toilet we recommend most often to buyers who want the best of both worlds. If you want strong flushing but refuse to accept a plain, loud toilet, the Cimarron is the one we would put in a guest bath or primary bathroom and forget about.
The Highline brings Kohler's Class Five canister flush to a simpler, more affordable body, making it the budget gateway to Cimarron-level flushing.
The Highline uses the same canister flush as the Cimarron, so it shares the quiet, strong clearing action, but in a plainer body with an exposed trapway and an 800-gram MaP rating rather than the Cimarron's up-to-1000-gram ceiling. That makes it the value pick for buyers who care more about the flush than the styling.
Owner reviews praise the Highline as a dependable, no-drama toilet that punches above its price, with the main trade-offs being the more basic looks and the exposed trapway that needs occasional wiping. Our Kohler Highline vs Cimarron comparison breaks down exactly who each one suits.
If the Cimarron's looks are nice to have but not essential, the Highline gives you most of the same flush for less money. It is the smart landlord and budget-remodel choice.
The Santa Rosa wraps Kohler's AquaPiston canister flush in a compact, seamless one-piece body that is easy to clean and well suited to smaller bathrooms.
The AquaPiston canister releases water from all sides of the valve for a strong, efficient flush that grades a full 1000 grams on MaP. The one-piece body removes the tank-to-bowl seam, so there is no gap collecting dust, and the compact, elongated shape fits tighter bathrooms better than many one-pieces.
Owner reviews highlight the clean look, quiet flush and easy maintenance, with the higher price and heavier single-piece install being the main downsides. For shoppers cross-shopping the lineup, our Kohler Santa Rosa review explains who it suits best.
Choose the Santa Rosa when you want Cimarron-grade flushing in a seamless, compact one-piece. It is the design-forward, small-bathroom member of the Kohler family.
The Cimarron is the right call for homeowners and remodelers who want a toilet that flushes strongly, resists clogs, runs quietly, saves water and still looks good. It suits standard 12-inch rough-in bathrooms, rewards buyers who care about both performance and appearance, and offers genuine peace of mind through Kohler's broad parts network and proven track record. It is also a smart pick for any bathroom near a bedroom where a quieter flush than a TOTO Drake's matters.
You should look elsewhere if your bathroom clogs constantly and you want the absolute strongest gravity flush regardless of noise, in which case the TOTO Drake or American Standard Champion 4 may serve you better, or if you want a fully seamless one-piece, where the Kohler Santa Rosa fits the same flush in a single body. Households with very hard water should also plan on periodic cleaning of the canister seal to keep performance consistent.
When buyers describe a bathroom that occasionally clogs but where looks and quiet matter, the Cimarron is the toilet we steer them to first. Match the rough-in and bowl shape to your space, decide whether you want the skirted body, confirm you are buying a complete bowl-and-tank pairing, and the Class Five canister, smooth trapway and up-to-1000-gram MaP score do the rest. Accept the occasional seal maintenance and a single rough-in option, and you get a quiet, good-looking toilet that simply works for a decade.
A 3-inch G-Max siphon jet that grades a maximum 1000 grams on MaP. The Drake flushes harder and slightly louder than the Cimarron in plainer styling, the natural cross-shop if power is your single priority.
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A giant 4-inch flush valve and wide trapway that grades up to 1000 grams. It clears large waste loads with ease, though many versions run on 1.6 gallons and the flush is louder than the Cimarron's.
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A skirted dual-flush model with TOTO's Tornado rinse and a water-saving half flush. A good option if you want a sleeker concealed-trapway shape and lower average water use than the single-flush Cimarron.
Check price on AmazonIf you are weighing the Cimarron against its strongest rivals, our TOTO Drake review covers the 3-inch G-Max siphon jet, our American Standard Champion 4 review breaks down that toilet's giant 4-inch valve, our TOTO Aquia IV review explains its dual-flush Tornado system, and our Woodbridge T-0019 review covers a modern skirted one-piece alternative. The Cimarron also appears throughout our pillar guide to the best flushing toilets, and our Kohler Cimarron vs Highline comparison pits it against its budget sibling.
Yes. The Cimarron is one of the most consistently recommended quieter, refined toilets among owners. Its Class Five canister flush grades up to a 1000-gram MaP score on an efficient 1.28 gallons, it carries EPA WaterSense certification, and aggregated owner reviews repeatedly praise its quiet operation, clean styling and clog resistance. The occasional canister-seal replacement is the main trade-off.
Very powerful for a gravity toilet, and quieter than most rivals at the same strength. The Class Five canister uses a wide 3-1/4 inch valve that opens fully to flood the bowl quickly and build a strong siphon. It grades up to 1000 grams on MaP in its best configurations, which is why clogs and double-flushing are rare in owner reviews.
The Cimarron grades up to the maximum 1000 grams in independent MaP (Maximum Performance) testing, though some configurations land closer to 800 grams. That places it near the top of the scale among gravity toilets. Because the score varies by SKU and flush volume, confirm the exact model's rating before buying.
Class Five is Kohler's canister flush technology. Instead of a rubber flapper that opens a small port on one side, a canister lifts straight up to expose a wide 3-1/4 inch opening that releases water from all sides at once. This delivers a fast, strong flush that clears the bowl thoroughly and runs quietly.
No, clogging is uncommon. The wide Class Five canister floods the bowl quickly to build a strong siphon, and the smooth trapway gives waste a slick path out. Aggregated owner reviews report few clogs and rare double-flushing, especially in the 1000-gram configurations, making it one of the better choices for clog resistance in its category.
The standard modern Cimarron uses 1.28 gallons per flush and is WaterSense certified, meaning it uses at least 20 percent less water than the federal 1.6-gallon maximum. A 1.6-gallon version exists for older drain lines, and some markets offer a dual-flush Cimarron with a 1.0-gallon light flush for further savings.
Yes, the 1.28-gallon Cimarron is EPA WaterSense certified. The program certifies toilets that use at least 20 percent less water than the federal maximum while still passing flush-performance criteria. The Cimarron meets both, which is notable given how strongly and quietly it flushes.
Yes, quiet operation is one of its strengths. The Class Five canister flush produces a smooth rush of water rather than the harder rush of a TOTO Drake's G-Max siphon jet, and it is far quieter than any pressure-assisted toilet. Owner reviews frequently cite the quiet flush as a reason they chose the Cimarron.
Both use the Class Five canister flush, but the Cimarron has a more refined body, is available in skirted versions, and grades up to 1000 grams on MaP, while the Highline has plainer styling, an exposed trapway and an 800-gram rating at a lower price. Choose the Cimarron for looks and the Highline for value.
It depends on the listing. Some Cimarron combos include a Kohler Quiet-Close seat, while others are sold as bowl and tank only. Always check the specific product page, and confirm the rough-in, bowl shape, flush volume and skirted-versus-exposed configuration at the same time so you get exactly what you expect.
The standard Cimarron fits a 12-inch rough-in, the distance from the finished wall to the center of the floor drain, which covers most homes. Unlike some TOTO models, it has fewer alternate rough-in options, so measure carefully before ordering to make sure your bathroom matches the 12-inch standard.
Both bowl shapes are available. The elongated version is the most popular and offers more seating room, while a round-front version exists for smaller bathrooms where space is tight. Confirm the bowl shape on the listing before ordering, since it affects the toilet's overall footprint.
Yes, the Cimarron is offered in Kohler's Comfort Height, sitting around 16-1/2 to 17-1/4 inches to the rim depending on configuration. This chair-like height meets ADA guidance for accessible seating and is easier on the knees and back than a standard low toilet, a benefit owners with mobility concerns frequently mention.
With normal use the Cimarron typically lasts many years, and the ceramic body itself can last for decades. The canister seal is the part owners occasionally replace after long service if the toilet starts to run or weakens, and it is an accessible, reasonably priced fix through Kohler's parts network that keeps the toilet serviceable.
It works in hard water, but the canister seal can be slightly more sensitive to mineral buildup than a simple flapper. Owners in hard-water areas report that periodic cleaning of the canister and seal keeps the flush strong. With that minor maintenance, the Cimarron performs reliably over the long term.
Yes. Kohler offers skirted Cimarron variants that conceal the trapway entirely behind a smooth side panel, giving a cleaner look and an easier-to-wipe surface with no exposed trapway contours. The skirted versions use the same Class Five canister flush as the standard exposed-trapway models.
Both are excellent and can reach a 1000-gram MaP score. The Drake's G-Max siphon jet flushes harder and a bit louder in plainer styling, while the Cimarron's Class Five canister runs quieter in a more refined body with skirted options. Choose the Drake for maximum raw power and the Cimarron for a cleaner look and quieter flush.
For buyers who want strong flushing with refined looks and quiet operation, yes. The Cimarron costs more than builder-grade toilets but matches pricier models on flush performance and styling, and Kohler's broad parts network keeps long-term ownership manageable. If pure power per dollar is your only concern, the TOTO Drake may edge it on value.
The Kohler Cimarron is the toilet we recommend first to buyers who want strong, clog-resistant flushing without giving up quiet operation or clean styling. Its Class Five canister opens a wide 3-1/4 inch valve to clear waste fast, grading up to the maximum 1000-gram MaP score on an efficient, WaterSense-certified 1.28 gallons, and aggregated owner reviews back that up with rare reports of clogging and frequent praise for the quiet flush. It gives up a little raw force to the louder TOTO Drake and American Standard Champion 4, and the canister seal may eventually need cleaning or replacement, but for a refined toilet that flushes hard and runs quiet at a sensible price it is one of the safest picks on the market. If you want a seamless one-piece, the Santa Rosa solves that with the same flush philosophy. Check the current price on Amazon to see where it sits today.
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