diff --git a/.changeset/tiny-peaches-tease.md b/.changeset/tiny-peaches-tease.md
new file mode 100644
index 00000000000..8486b7f1e54
--- /dev/null
+++ b/.changeset/tiny-peaches-tease.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": minor
+---
+
+Remove the CSS modules feature flag from the ConfirmationDialog component
diff --git a/packages/react/src/ConfirmationDialog/ConfirmationDialog.tsx b/packages/react/src/ConfirmationDialog/ConfirmationDialog.tsx
index 8b4cb19ee8e..49c97ad4d0f 100644
--- a/packages/react/src/ConfirmationDialog/ConfirmationDialog.tsx
+++ b/packages/react/src/ConfirmationDialog/ConfirmationDialog.tsx
@@ -1,17 +1,12 @@
 import React, {useCallback} from 'react'
 import {createRoot} from 'react-dom/client'
-import styled from 'styled-components'
-import Box from '../Box'
 import type {ThemeProviderProps} from '../ThemeProvider'
 import {ThemeProvider, useTheme} from '../ThemeProvider'
 import {FocusKeys} from '@primer/behaviors'
-import {get} from '../constants'
 import type {DialogProps, DialogHeaderProps, DialogButtonProps} from '../Dialog/Dialog'
 import {Dialog} from '../Dialog/Dialog'
 import {useFocusZone} from '../hooks/useFocusZone'
 import BaseStyles from '../BaseStyles'
-import {toggleStyledComponent} from '../internal/utils/toggleStyledComponent'
-import {useFeatureFlag} from '../FeatureFlags'
 import classes from './ConfirmationDialog.module.css'
 
 /**
@@ -46,70 +41,22 @@ export interface ConfirmationDialogProps {
   confirmButtonType?: 'normal' | 'primary' | 'danger'
 }
 
-const CSS_MODULES_FEATURE_FLAG = 'primer_react_css_modules_ga'
-
-const StyledConfirmationHeader = toggleStyledComponent(
-  CSS_MODULES_FEATURE_FLAG,
-  'div',
-  styled.div`
-    padding: ${get('space.2')};
-    display: flex;
-    flex-direction: row;
-  `,
-)
-
-const StyledTitle = toggleStyledComponent(
-  CSS_MODULES_FEATURE_FLAG,
-  'h1',
-  styled(Box).attrs({as: 'h1'})`
-    font-size: ${get('fontSizes.3')};
-    font-weight: ${get('fontWeights.bold')};
-    padding: 6px ${get('space.2')};
-    flex-grow: 1;
-    margin: 0; /* override default margin */
-  `,
-)
-
 const ConfirmationHeader: React.FC<React.PropsWithChildren<DialogHeaderProps>> = ({title, onClose, dialogLabelId}) => {
   const onCloseClick = useCallback(() => {
     onClose('close-button')
   }, [onClose])
 
-  const enabled = useFeatureFlag(CSS_MODULES_FEATURE_FLAG)
   return (
-    <StyledConfirmationHeader className={enabled && classes.ConfirmationHeader}>
-      <StyledTitle id={dialogLabelId}>{title}</StyledTitle>
+    <div className={classes.ConfirmationHeader}>
+      <h1 id={dialogLabelId}>{title}</h1>
       <Dialog.CloseButton onClose={onCloseClick} />
-    </StyledConfirmationHeader>
+    </div>
   )
 }
-const StyledConfirmationBody = toggleStyledComponent(
-  CSS_MODULES_FEATURE_FLAG,
-  'div',
-  styled(Box)`
-    font-size: ${get('fontSizes.1')};
-    padding: 0 ${get('space.3')} ${get('space.3')} ${get('space.3')};
-    flex-grow: 1;
-  `,
-)
 
 const ConfirmationBody: React.FC<React.PropsWithChildren<DialogProps>> = ({children}) => {
-  const enabled = useFeatureFlag(CSS_MODULES_FEATURE_FLAG)
-  return <StyledConfirmationBody className={enabled && classes.ConfirmationBody}>{children}</StyledConfirmationBody>
+  return <div className={classes.ConfirmationBody}>{children}</div>
 }
-const StyledConfirmationFooter = toggleStyledComponent(
-  CSS_MODULES_FEATURE_FLAG,
-  'div',
-  styled(Box)`
-    display: grid;
-    grid-auto-flow: column;
-    grid-auto-columns: max-content;
-    grid-gap: ${get('space.2')};
-    align-items: end;
-    justify-content: end;
-    padding: ${get('space.1')} ${get('space.3')} ${get('space.3')};
-  `,
-)
 
 const ConfirmationFooter: React.FC<React.PropsWithChildren<DialogProps>> = ({footerButtons}) => {
   const {containerRef: footerRef} = useFocusZone({
@@ -117,16 +64,11 @@ const ConfirmationFooter: React.FC<React.PropsWithChildren<DialogProps>> = ({foo
     focusInStrategy: 'closest',
   })
 
-  const enabled = useFeatureFlag(CSS_MODULES_FEATURE_FLAG)
-
   // Must have exactly 2 buttons!
   return (
-    <StyledConfirmationFooter
-      ref={footerRef as React.RefObject<HTMLDivElement>}
-      className={enabled && classes.ConfirmationFooter}
-    >
+    <div ref={footerRef as React.RefObject<HTMLDivElement>} className={classes.ConfirmationFooter}>
       <Dialog.Buttons buttons={footerButtons ?? []} />
-    </StyledConfirmationFooter>
+    </div>
   )
 }