TOTO Promenade Two-Piece Elongated 1.28 GPF Toilet

Model CST423SF
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Glaze
CeFiONtect
Design
Designer two-piece with decorative tank styling
Map Score
800
Bowl Shape
Elongated
Flush Type
G-Max Gravity
Watersense
1

TOTO Promenade Two-Piece Elongated 1.28 GPF Toilet Review

The TOTO Promenade positioning

The Promenade (CST423SF) is TOTO's classical-styled designer two-piece — the toilet you choose when you want TOTO engineering quality paired with a traditional/classical aesthetic rather than the modern minimalism of Drake II or the contemporary curves of UltraMax II. At $580-$780, the Promenade sits in the mid-premium tier, comparable to Kohler Memoirs Stately ($720-$880) in design positioning but at a slightly lower price point.

The Promenade is the TOTO answer for traditional-styled bathrooms with classical fixtures — claw-foot tubs, pedestal sinks with skirted bases, polished brass faucets in vintage styling. Where the Drake II reads "performance reference" and the UltraMax II reads "modern designer," the Promenade reads "classical residential with TOTO quality."

The Promenade design language

  • Decorative tank lid with curved silhouette and subtle architectural details
  • Curved tank base — the tank sits on the bowl with curved edges rather than the flat geometric meeting on Drake II
  • Bowl rim with subtle skirt detail — not full skirted-trapway (that's UltraMax II / Carlyle II) but with more visual detail than a stripped Drake
  • Available in classical color palette — Cotton White, Colonial White, Sedona Beige, Bone
  • Designer-finish trip lever available in chrome, polished brass, polished nickel

The Promenade vs Drake II — the same engineering, different aesthetic

Engineering-wise, the Promenade uses TOTO's G-Max gravity flush — same mechanism as the original Drake (CST744SL). The Promenade is essentially a Drake bowl with classical styling and CeFiONtect glaze. This means:

  • MaP score: 800g (same as original Drake and Eco Drake; below Drake II's 1,000g+)
  • Same parts ecosystem as Drake — universal flappers, fill valves, trip levers fit perfectly
  • Same install procedure as Drake / Eco Drake
  • Plus CeFiONtect glaze standard (Eco Drake's CEFG upgrade variant is the comparable spec)

The Promenade's price premium over Drake II ($580-$780 vs $430-$470) is paying for the classical aesthetic, not for flush engineering. If flush performance matters more than design, Drake II is the better value.

The variant matrix

Model #DescriptionPrice (~)
CST423SFPromenade, elongated, 1.28 GPF, Universal Height, Cotton White$580-$680
CST423SF#01Color code clarification for Cotton White$580-$680
CST423SF#11Colonial White$620-$720
CST423SF#12Sedona Beige$640-$740
CST423SF#03Bone$640-$740
CST424SFPromenade, 1.6 GPF variant (legacy)$540-$640

What's in the box

  • Tank with decorative styling + pre-installed G-Max flush mechanism
  • Bowl (pre-drilled for 12" rough-in)
  • Decorative trip lever (chrome standard; specify designer finish at order)
  • Tank-to-bowl gasket and brass bolts
  • CeFiONtect glaze on bowl interior
  • Wax ring NOT included
  • SoftClose seat NOT included — TOTO SS113 ($45-75) or TOTO Renaissance designer seat ($110-160) for classical bathroom suite coordination

Install requirements and procedure

  • Rough-in: 12 inches (standard).
  • Weight: ~90 lbs total (tank ~38, bowl ~52). Slightly heavier than Drake due to decorative tank styling adding porcelain mass.
  • Standard two-piece install — same procedure as Drake. See Drake install walkthrough.
  • Universal parts — fits all standard aftermarket flapper / fill valve / trip lever / supply line.

What owners report

  • The classical aesthetic is the buying reason. Owners pair the Promenade with claw-foot tubs, vintage pedestal sinks, and classical-styled bathrooms where Drake II's modern look would be out of place.
  • G-Max flush performance is solid for normal use. Same engineering as Drake series; no double-flushing reports in typical households.
  • CeFiONtect glaze performs as expected — extended cleaning intervals, reduced mineral spotting in hard-water areas.
  • The decorative tank styling is divisive. Some find it elegant; some find it ornate vs the cleaner Drake II silhouette. Look at it in person before buying.
  • Parts availability is slightly less broad than Drake — the Promenade is lower-volume in TOTO's lineup, so plumbing-supply houses don't always stock model-specific items. Universal aftermarket parts (Korky, Fluidmaster) fit perfectly, so this is mostly a non-issue.
  • Service life: 25+ years for porcelain. Flapper at 7-8 years; tank-to-bowl gasket at 12-15.

Where Promenade wins vs competitors

CompetitorComparison
Kohler Memoirs Stately ($720-$880)Memoirs is one-piece classical; Promenade is two-piece classical. Memoirs has AquaPiston canister; Promenade has G-Max + CeFiONtect. Different but comparable design tiers.
American Standard Heritage VorMax ($550-$750)Heritage VorMax is American classical styling with VorMax flush + EverClean glaze. Comparable design tier; different brand aesthetic.
TOTO Drake II ($430-$470)Drake II is modern aesthetic with stronger flush. The Promenade premium over Drake II is for the classical styling.
TOTO Soiree ($740-$880)Soiree is a newer TOTO designer two-piece with more contemporary curves. Different design language within the TOTO designer-mid tier.

The verdict

Buy if:

  • You're designing a classical-styled bathroom with vintage fixtures
  • You want TOTO engineering quality in a non-modern aesthetic
  • Two-piece serviceability matters to you (vs one-piece Memoirs)
  • You value the decorative tank styling and color options

Skip if:

  • The modern Drake II aesthetic suits your bathroom and you don't need classical styling
  • Maximum flush performance matters (Drake II's Double Cyclone outperforms Promenade's G-Max)
  • Budget under $500 — Eco Drake CEFG variant gets you CeFiONtect at lower price

Warranty

TOTO Promenade residential warranty: 1 year on tank trim, lifetime on porcelain. Service network identical to Drake — TOTO USA Atlanta with universal aftermarket parts compatibility.

Pricing reality (2026)

Promenade CST423SF (Cotton White): $580-$680. Ferguson and Build.com Pro Desk: $520-$580. Home Depot: $649-$699 (limited availability — Promenade is not stocked at all stores). Designer color variants +$40-$160. Designer-finish trip lever +$25-$80.

Pros
  • Designer two-piece with curved silhouette
  • CeFiONtect glaze standard
  • Decorative tank styling — classical bathroom suite coordinator
  • Universal Height (ADA-compliant)
  • WaterSense certified
  • Lower install weight than one-piece TOTOs
  • Two-piece serviceability advantages
Cons
  • G-Max flush (not Double Cyclone or Tornado)
  • SoftClose seat NOT included
  • Tank styling is divisive — some find it elegant, some find it ornate
  • Less common than Drake series — parts not as widely stocked

Full Specifications

Brand
TOTO
Model Number
CST423SF
Glaze
CeFiONtect
Design
Designer two-piece with decorative tank styling
Map Score
800
Bowl Shape
Elongated
Flush Type
G-Max Gravity
Watersense
1
Ada Compliant
1
Height Inches
17.25
Warranty Years
1
Rough In Inches
12
Gallons Per Flush
1.28
Warranty Porcelain
Lifetime

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