A spec-by-spec comparison of Kohler's two most cross-shopped gravity toilets, weighing published MaP flush-test gram scores, GPF water use, EPA WaterSense listings, flush-valve and trapway design and aggregated owner ratings, so you can decide whether the refined, harder-flushing Cimarron or the simpler, lower-cost Highline is the right toilet for your bathroom.
Research updated June 2026.
Buy the Kohler Cimarron for your main bathroom. Its AquaPiston canister valve and concealed glazed trapway clear a 1,000 gram MaP load and keep the bowl cleaner than the Highline's flapper flush. Choose the Highline only when you want Kohler's lowest-cost, easiest-to-repair toilet for rentals or secondary baths.
If you have decided to buy a Kohler toilet, the choice almost always narrows to two models: the Cimarron and the Highline. They are the brand's volume sellers, they sit side by side in every home-improvement aisle and online catalog, and at a glance they look like the same toilet at two price points. Both are gravity-flush, two-piece designs, both come in round and elongated bowls, both offer a standard and a taller Comfort Height version, and both drop onto the same 12 inch rough-in. The decision feels like it should come down to price alone. It does not. The parts that matter sit inside the tank and beneath the bowl, and they aim each toilet at a clearly different buyer.
This guide puts the Kohler Cimarron and Kohler Highline side by side using published manufacturer specifications, MaP (Maximum Performance) flush-test gram scores, EPA WaterSense listings, flush-valve and trapway design, bowl-wash behavior and aggregated owner ratings across major retailers. Rather than crown one universal winner, the goal is to match each toilet to a real situation, because the honest answer depends on whether you prize the strongest flush and cleanest bowl or the lowest price and simplest repairs. For the broader cross-brand picture, the pillar guide to the best flushing toilets ranks both of these Kohlers against TOTO and American Standard. This page stays narrowly on the two-Kohler decision.
We do not test toilets in a lab. We compare manufacturer specifications, published MaP flush-test gram scores, EPA WaterSense listings, flush-valve and trapway dimensions, bowl height and shape, and aggregated owner ratings across major retailers. Where one model clearly suits a use case better, we say so plainly rather than declaring a single winner for every home.
A side-by-side look at the two toilets in their most common elongated, Comfort Height, 1.28 GPF configurations. A higher MaP gram score means more solid waste cleared in a single flush. The tinted cell shows which model tends to lead on that row. Both ship in round and elongated bowls and in 1.28 and 1.6 GPF versions, so confirm the exact SKU before you buy.
| Spec | Kohler Cimarron | Kohler Highline |
|---|---|---|
| Best for | Primary bathroom | Value and rentals |
| MaP flush score (top variant) | 1,000 g | 800 g |
| GPF (water per flush) | 1.28 or 1.6 | 1.28 or 1.6 |
| Flush valve | 3 inch AquaPiston canister | 3 inch flapper |
| Trapway | Concealed, fully glazed | 2 1/8 inch glazed, exposed |
| Bowl wash | Canister 360-degree wash | Standard rim jets |
| WaterSense certified | Yes (1.28 GPF) | Yes (1.28 GPF) |
| Bowl shape options | Round or elongated | Round or elongated |
| Height options | Standard or Comfort Height | Standard or Comfort Height |
| Skirted look | Concealed trapway (cleaner) | Exposed trapway |
| Typical price tier | Higher | Lower |
| Repair / parts simplicity | Canister, Kohler-specific kit | Simple flapper, generic parts |
| Typical owner rating | 4.6 | 4.5 |
The table draws the central trade-off in sharp lines. The Cimarron leads everywhere flush performance and bowl cleanliness are decided, thanks to its AquaPiston canister valve, concealed glazed trapway, 360-degree bowl wash and stronger MaP score. The Highline answers back on price and repair simplicity, because its conventional flapper valve uses widely available generic parts and the toilet sells for less. Both carry WaterSense certification in their 1.28 GPF versions, share the same heights and bowl shapes, and are built from the same durable Kohler vitreous china. This is not a good toilet against a bad one. It is a refined daily performer against a dependable, lower-cost workhorse, and the right pick depends entirely on the bathroom.
The single biggest engineering difference between these two toilets is the flush valve, and it is what separates the Cimarron's flush from the Highline's. The Cimarron uses Kohler's AquaPiston canister valve. Instead of a flapper hinged on one edge, the canister sits in the center of the tank and lifts straight up when you press the handle, opening a wide passage that lets water pour into the bowl from a full 360 degrees rather than from one direction. That even, all-around release drives a stronger and more complete siphon, which is why the Cimarron's top configuration reaches a 1,000 gram MaP score, the highest the Maximum Performance test reports. In plain terms, it clears a very large solid-waste load in a single flush under lab conditions.
The Highline uses a conventional flapper-style 3 inch flush valve. When the handle drops, a chain lifts a rubber flapper and water falls from the tank into the bowl through one opening at the bottom. It is a proven, simple mechanism that has flushed millions of toilets for decades, and on the Highline it clears a normal household load without complaint, earning a MaP score around 800 grams in the common 1.28 GPF version. That is a solid, above-average result. The difference is margin: the Cimarron has more force in reserve for the worst-case loads a busy bathroom produces, while the Highline has a smaller but still adequate cushion. If flush power sits at the top of your priority list, the canister valve is the most important line in the spec table.
A canister flush valve like the Cimarron's AquaPiston opens a wider passage than a flapper and releases water evenly around the bowl, producing a more forceful flush from the same gallons. It also has fewer wear points than a flapper that seals on one edge, so it tends to hold a leak-free seal longer. This single component explains most of the Cimarron's advantage over the Highline in both flush power and bowl cleaning.
Clog resistance comes down to two things working together: how forcefully the flush starts the siphon, and how smoothly the trapway carries waste to the drain. The Cimarron leads on both counts. Its AquaPiston canister produces the stronger initial push, and its concealed trapway is fully glazed inside, meaning the internal channel is coated with the same slick vitreous china glaze as the bowl. A glazed trapway resists the streaking and partial blockages that build up slowly in a high-use bathroom, giving waste a low-friction slide to the drain. That combination of force and smoothness is why the Cimarron is the better choice for households that put a toilet through hard daily use.
The Highline uses a 2 1/8 inch glazed trapway, a respectable diameter that clears a normal load reliably, and owner reviews of the Highline rarely complain about clogging in typical homes. What it lacks is the Cimarron's extra force margin for genuinely heavy loads, the kind a large family or a frequently used bathroom can generate. If your household has a history of clogs, or simply runs a toilet hard every day, the Cimarron is the safer pick. If you have never fought a clog, the Highline's trapway is fully capable. For a deeper look at how concealed and exposed trapways differ, our comparison of skirted vs exposed trapway toilets explains why the Cimarron's hidden base behaves differently from the Highline's exposed S-bend.
Value is not the same as cheapest, and these two toilets split the question cleanly. The Highline almost always sells at a lower price than the Cimarron, which makes it the smart call when you are buying several toilets at once, outfitting a rental or secondary bathroom, or simply want a dependable Kohler at the lowest entry point. Because it uses a conventional flapper valve, repairs stay cheap and easy: a generic flapper from any hardware store fits, with no Kohler-specific kit required. Over years of ownership that parts simplicity is a real, if modest, saving, and it is exactly what matters in a property you maintain for others.
The Cimarron costs more, but for a primary bathroom used many times a day, the upgrade buys things you notice constantly. You get a more forceful flush, a bowl that the 360-degree canister wash keeps cleaner with less scrubbing, and the smoother, skirted concealed-trapway base that wipes down faster. Those are daily quality-of-life improvements, not spec-sheet trivia, and on the toilet you actually live with they earn the price difference. For a powder room used twice a week, the Highline's lower price is the better-value answer. Check the current price on Amazon for each, since height, bowl shape and color all change what you pay.
The way we frame this for a friend is simple: buy the Cimarron for the bathroom you live in, and the Highline for the bathrooms you maintain. The Cimarron's canister flush and concealed glazed trapway are genuine, daily-felt upgrades for a primary toilet, and the stronger MaP score buys clog-resistance peace of mind. The Highline is the model we recommend by the pair for rentals, basements and guest baths, where its lower price and dead-simple flapper repairs matter more than the last increment of flush force.
Cleaning splits into two parts: the inside of the bowl and the outside of the toilet. Inside, the Cimarron's canister flush releases water around the entire rim, so each flush rinses the full circumference of the bowl rather than concentrating the flow in one zone. That more complete rinse cuts streaking between cleanings and means less frequent scrubbing. The Highline's standard rim jets clean the bowl adequately, but the wash is less even, so stubborn spots can need more attention over time. Neither toilet uses a specialized anti-stick glaze the way TOTO's CeFiONtect coating does, so a bowl cleaner remains part of normal maintenance for both.
Outside, the Cimarron's concealed trapway gives it a smooth, skirted lower body with no exposed S-bend curves to dust and wipe around, a clear advantage for any bathroom where appearance and quick cleaning matter. The Highline keeps a traditional exposed trapway, the familiar contoured shape on the side of the base, which collects more dust and takes a little longer to clean. If you want the absolute easiest toilet to wipe down, a seamless one-piece is smoother still; our comparison of one piece vs two piece toilets covers that trade-off, since both the Cimarron and Highline in their common forms are two-piece designs.
Water use is one area where these two toilets are genuinely matched. Kohler sells both the Cimarron and the Highline in a 1.28 gallon-per-flush version that carries EPA WaterSense certification, meaning it meets the federal efficiency benchmark and beats the 1.6 gallon legal maximum by 20 percent while still passing flush-performance testing. Both are also offered in a 1.6 GPF version for buyers who specifically want extra drain-line carry water, such as older homes with long, low-slope waste lines. Because the same choice exists on both models, water efficiency does not tip the decision; you pick the flush volume separately from the model. For a full breakdown of what that number means, see our explainer on 1.28 GPF vs 1.6 GPF toilets.
One nuance is worth knowing. At the same 1.28 GPF volume, the Cimarron's canister flush extracts more flush power from those identical gallons than the Highline's flapper does, which is why the Cimarron posts the higher MaP score. So while the water use can be identical, the flush result is not. If you want the most waste cleared per gallon, the Cimarron's flush system is the more efficient design even at the same GPF rating. Both, of course, sit far ahead of the old 3.5 to 7 gallon toilets they were built to replace.
Below are both models laid out with their key specs and the honest case for each. Confirm the exact SKU for height, shape and GPF before you buy, since both lines span several configurations.
The Cimarron is the toilet to buy when you want Kohler's strongest flush and cleanest bowl, pairing the AquaPiston canister valve with a concealed, fully glazed trapway for a refined everyday toilet.
The AquaPiston canister sits in the center of the tank and lifts straight up, releasing water around the full rim for a forceful, even flush. That all-around wash is why the Cimarron reaches a 1,000 gram MaP score and keeps the bowl cleaner between scrubbings than a one-direction flapper flush.
Owner reviews consistently praise the strong flush, the quiet operation and the easy-clean skirted base. The most common notes are that it costs more than the Highline and that the canister seal, when it eventually wears, is best replaced with the matching Kohler part rather than a generic flapper.
If someone wants one Kohler toilet for the bathroom they actually use, this is the one we point to. The canister flush and glazed concealed trapway are real upgrades you feel every day, and the higher MaP score buys genuine peace of mind in a busy household. The extra cost over the Highline is money well spent on a primary toilet.
The Highline is the toilet to buy when you want a dependable Kohler at the lowest price, with a simple flapper flush that any generic part will repair for years to come.
The Highline's conventional flapper flush is a proven, simple mechanism that clears a normal load reliably and earns a solid MaP score in the 1.28 GPF version. It is the toilet Kohler has sold by the millions precisely because it just works without complication.
Owner reviews highlight the low price, the easy installation and the cheap, universal repair parts. The main reminders are that the exposed trapway takes longer to wipe around and that the flush has less force margin than the Cimarron's canister system for the heaviest loads.
The Highline is the toilet we recommend by the pair when someone is fitting out rentals or a whole house on a budget. You get Kohler durability and a genuinely reliable flush for less money, and the flapper valve means a cheap generic part fixes a leak years from now. For the bathroom you live in we would step up to the Cimarron, but for everywhere else the Highline is the value champion.
Pick the Cimarron when flush performance, bowl cleanliness and appearance matter, which is to say for the bathroom you use most. Its AquaPiston canister valve produces a stronger, more even flush, its top configuration clears a 1,000 gram MaP load, its concealed glazed trapway resists clogs and keeps the base smooth and easy to wipe, and its 360-degree bowl wash keeps the interior cleaner between scrubbings. You accept a higher price and a Kohler-specific canister seal for repairs in exchange for a toilet that simply performs better every day. For a busy family bathroom or any primary toilet, the Cimarron is the one to buy. It is also Kohler's strongest answer when you cross-shop against the premium flush engineering covered in our TOTO vs Kohler toilets comparison.
Pick the Highline when price and repair simplicity outrank the last increment of flush force, which is to say for rentals, basements, guest baths and budget whole-house fit-outs. It flushes cleanly with a respectable MaP score, comes in the same heights and bowl shapes as the Cimarron, carries WaterSense certification in its 1.28 GPF version, and uses a conventional flapper valve that any generic part repairs cheaply. You give up the Cimarron's stronger flush, cleaner bowl wash and skirted look, but for a toilet that is not put through punishing daily use, the Highline delivers Kohler reliability at the lowest entry price. It is the value pick across the Kohler range, much as the Cadet 3 is for American Standard in our American Standard Champion 4 vs Cadet 3 comparison.
Kohler sits in the premium-design tier of American toilets, with strong flush engineering and well-regarded finishes and styling. Against American Standard, Kohler generally leads on design while American Standard leads on raw clog-fighting hardware like the Champion 4's oversized flush valve; our comparison of Kohler vs American Standard toilets lines the Cimarron and Highline up against the Cadet 3 and Champion 4. Against TOTO, widely regarded as the flush-engineering leader, the Cimarron is Kohler's closest competitor to the TOTO Drake on flush power, both reaching a 1,000 gram MaP score, while TOTO's CeFiONtect glaze gives it an edge on bowl cleaning. If you are weighing TOTO's own lineup, our guide to the TOTO Drake vs UltraMax II is the next stop. Beyond the big three, Woodbridge and Swiss Madison bring modern skirted styling at value prices, and Gerber offers strong flushing per dollar with models like the Viper and Avalanche, so the field is wider than these two Kohlers if you are open to other brands.
Here is the buying-guide shortcut we would give a friend choosing between these two. Decide bowl shape and height first, based on who uses the bathroom and how much floor space you have, since both models offer the same options. Then ask one question: is this the toilet we use every day, or one we mostly maintain for others? Every-day toilet, buy the Cimarron for its flush and clean bowl. Maintenance or budget toilet, buy the Highline for its price and simple repairs. Both are durable Kohlers, so you are not choosing between good and bad, just between refined and economical.
These two Kohler toilets are less rivals than two answers to two different questions. The Cimarron is the better toilet on the metrics that define everyday quality: a stronger AquaPiston canister flush, a higher 1,000 gram MaP score, a concealed glazed trapway that resists clogs and a 360-degree bowl wash that stays cleaner. The Highline is the better buy when price and repair simplicity outweigh peak flush force, with a proven flapper valve, cheap universal parts and a lower price that makes sense for rentals and secondary baths. Both share Kohler's durable china, the same heights and bowl shapes, the same 12 inch rough-in and WaterSense certification in their 1.28 GPF versions. Decide whether this is the toilet you live with or one you maintain, then pick refinement with the Cimarron or value with the Highline. Check the current price on Amazon for the exact configuration you choose.
Buy the Kohler Cimarron for your primary bathroom: its AquaPiston canister flush, 1,000 gram MaP score, concealed glazed trapway and 360-degree bowl wash make it the better-performing, cleaner, more refined toilet for daily use. Buy the Kohler Highline for rentals, basements and secondary baths, where its lower price and simple flapper repairs win. Both are dependable WaterSense-certified Kohlers; the choice is refinement versus value, not good versus bad.
The Cimarron flushes better. Its AquaPiston canister valve releases water around the full rim for a stronger, more even flush, and its top configuration posts a 1,000 gram MaP score against the Highline's roughly 800 grams. The Highline flushes reliably for normal use, but the Cimarron has more force in reserve for heavy loads in a busy bathroom.
AquaPiston is Kohler's canister flush valve. Instead of a flapper hinged on one side, the canister sits in the center of the tank and lifts straight up, opening a passage that lets water flow into the bowl from a full 360 degrees. That even, all-around release drives a stronger siphon and washes the whole bowl, which is the main reason the Cimarron out-flushes the flapper-valve Highline.
The Cimarron is more clog resistant. Its stronger AquaPiston flush pushes solids through with more force, and its concealed, fully glazed trapway gives waste a smooth, low-friction path to the drain. The Highline resists clogs well in normal homes, but the Cimarron has the larger margin for heavy or frequent loads.
Yes. Both the Cimarron and the Highline are sold in round and elongated bowls and in standard and Comfort Height (taller, chair-height) versions. Because the height and shape options overlap, choose those features based on your space and the people using the bathroom, then decide between the two models based on the flush, cleaning and price trade-off.
It depends on the bathroom. For a primary bathroom used many times a day, the Cimarron is better value because its stronger flush and cleaner bowl wash are felt daily. For rentals, basements and guest baths, the lower-priced Highline is the better value, especially since its flapper valve uses cheap, universal repair parts.
Yes, in their 1.28 GPF versions. Both toilets are offered in a 1.28 gallon-per-flush configuration that carries EPA WaterSense certification, meaning it uses 20 percent less water than the 1.6 gallon legal maximum while passing flush-performance testing. Both are also available in a 1.6 GPF version for buyers who want extra drain-line carry water.
The Cimarron is easier to clean. Its canister flush washes the bowl from a full 360 degrees, reducing streaking between cleanings, and its concealed skirted trapway has no exposed S-bend curves to dust and wipe around the base. The Highline's exposed trapway has more contours that collect dust and take longer to clean.
A concealed trapway means the curved waste channel is hidden inside a smooth, skirted lower body rather than showing as the familiar contoured S-bend on the side of the base. The result is a cleaner appearance and an easier-to-wipe exterior. The Highline uses a traditional exposed trapway, which has more crevices to clean around.
The Highline is easier and cheaper to repair. It uses a conventional flapper-style flush valve, so a generic flapper from any hardware store will fit, with no Kohler-specific part needed. The Cimarron's AquaPiston canister is durable and tends to hold a leak-free seal longer, but when it eventually wears it is best replaced with the matching Kohler canister kit.
Yes. Both use the standard 12 inch rough-in, the distance from the finished wall to the center of the floor drain, so either will drop into the footprint of a typical existing toilet without plumbing changes. Always measure your rough-in before buying, since 10 inch and 14 inch layouts exist, but for most homes either model fits the same space.
In their most common and best-selling forms, yes. Both are typically sold as two-piece toilets with a separate tank and bowl. Kohler does offer a one-piece Cimarron in some markets. If you prefer a seamless one-piece for easier cleaning, confirm the exact SKU, since the standard configurations of both are two-piece.
They are close, and both are quiet gravity toilets. The Cimarron's canister valve releases water smoothly and many owners describe it as a quiet, even flush. The Highline's flapper flush is also quiet for a gravity toilet. Neither is a loud pressure-assist model, so flush noise is not a meaningful reason to choose one over the other.
The Cimarron is the better master-bathroom choice. As a toilet you use many times a day, it rewards you with a stronger flush, a bowl that stays cleaner thanks to the 360-degree wash, and a skirted concealed-trapway look that is both more attractive and easier to wipe. The price premium over the Highline is justified for a primary, everyday toilet.
The Highline is the better rental-property choice. It costs less, which matters when buying several at once, and its conventional flapper valve means any tenant or handyman can fix a leak with a cheap, universal part. It still delivers reliable Kohler flushing and durability, so tenants get a dependable toilet without the higher cost of the Cimarron.
The Cimarron's top configuration posts a 1,000 gram MaP score, the highest the Maximum Performance test reports, meaning it clears a very large solid-waste load in a single flush under lab conditions. MaP scores can vary slightly by exact SKU and GPF, so confirm the specific model, but the Cimarron sits among the strongest-flushing Kohler toilets.
The Highline's common 1.28 GPF version posts a MaP score around 800 grams, a solid, above-average result that clears a large solid-waste load in one flush. It is lower than the Cimarron's 1,000 gram top score but still well above the threshold for reliable everyday flushing in a normal household.
The Cimarron is Kohler's closest competitor to the TOTO Drake on flush power, with both reaching a 1,000 gram MaP score in their top versions. TOTO's CeFiONtect glaze gives the Drake an edge on bowl cleaning, while Kohler often leads on finish and styling. Both are excellent gravity toilets, so the choice usually comes down to brand preference and price.
For a primary bathroom, yes. The Cimarron's canister flush, higher MaP score, concealed glazed trapway and 360-degree bowl wash are daily-felt upgrades that justify the price on a toilet you use constantly. For a secondary bath, rental or low-use powder room, the savings on the Highline usually outweigh those upgrades.
It varies by configuration. Some Cimarron and Highline packages include a Kohler seat while others sell the bowl and tank alone, with the seat purchased separately. Always check the exact listing before you buy so you know whether a seat is included, and budget for a quality elongated or round seat that matches your chosen bowl shape if it is not.
How we rank & our data sources
We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.
Researched by Marcus Bell · Last updated August 14, 2026 · Our review method
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