diff --git a/.changeset/sharp-onions-double.md b/.changeset/sharp-onions-double.md
new file mode 100644
index 00000000000..40efbccf53d
--- /dev/null
+++ b/.changeset/sharp-onions-double.md
@@ -0,0 +1,7 @@
+---
+"@primer/react": patch
+"@primer/styled-react": patch
+---
+
+@primer/styled-react: chore(navlist): remove unneeded exports
+@primer/react: add missing isSlot checks
diff --git a/packages/react/src/NavList/NavList.tsx b/packages/react/src/NavList/NavList.tsx
index 6df851846b8..8648957d4aa 100644
--- a/packages/react/src/NavList/NavList.tsx
+++ b/packages/react/src/NavList/NavList.tsx
@@ -64,7 +64,12 @@ const Item = React.forwardRef<HTMLAnchorElement, NavListItemProps>(
 
     // Get children without SubNav or TrailingAction
     const childrenWithoutSubNavOrTrailingAction = React.Children.toArray(children).filter(child =>
-      isValidElement(child) ? child.type !== SubNav && child.type !== TrailingAction : true,
+      isValidElement(child)
+        ? child.type !== SubNav &&
+          child.type !== TrailingAction &&
+          !isSlot(child, SubNav) &&
+          !isSlot(child, TrailingAction)
+        : true,
     )
 
     if (!isValidElement(subNav) && defaultOpen)
diff --git a/packages/styled-react/src/__tests__/primer-react.browser.test.tsx b/packages/styled-react/src/__tests__/primer-react.browser.test.tsx
index 492035072d2..5b0261a104f 100644
--- a/packages/styled-react/src/__tests__/primer-react.browser.test.tsx
+++ b/packages/styled-react/src/__tests__/primer-react.browser.test.tsx
@@ -271,31 +271,6 @@ describe('@primer/react', () => {
     expect(window.getComputedStyle(itemLiEl!).backgroundColor).toBe('rgb(255, 0, 0)')
   })
 
-  test('NavList.Group supports `sx` prop', () => {
-    render(
-      <NavList>
-        <NavList.Group data-testid="component" sx={{background: 'red'}}>
-          <NavList.Item>item</NavList.Item>
-        </NavList.Group>
-      </NavList>,
-    )
-    expect(window.getComputedStyle(screen.getByTestId('component')).backgroundColor).toBe('rgb(255, 0, 0)')
-  })
-
-  test('NavList.GroupHeading supports `sx` prop', () => {
-    render(
-      <NavList>
-        <NavList.Group>
-          <NavList.GroupHeading data-testid="component" sx={{background: 'red'}}>
-            test
-          </NavList.GroupHeading>
-          <NavList.Item>item</NavList.Item>
-        </NavList.Group>
-      </NavList>,
-    )
-    expect(window.getComputedStyle(screen.getByTestId('component')).backgroundColor).toBe('rgb(255, 0, 0)')
-  })
-
   test('NavList.LeadingVisual supports `sx` prop', () => {
     render(<NavList.LeadingVisual data-testid="component" sx={{background: 'red'}} />)
     expect(window.getComputedStyle(screen.getByTestId('component')).backgroundColor).toBe('rgb(255, 0, 0)')
diff --git a/packages/styled-react/src/components/NavList.tsx b/packages/styled-react/src/components/NavList.tsx
index 8613746d553..d3b15272463 100644
--- a/packages/styled-react/src/components/NavList.tsx
+++ b/packages/styled-react/src/components/NavList.tsx
@@ -2,56 +2,63 @@ import {NavList as PrimerNavList} from '@primer/react'
 import type {
   NavListProps as PrimerNavListProps,
   NavListItemProps as PrimerNavListItemProps,
-  NavListGroupProps as PrimerNavListGroupProps,
-  NavListGroupHeadingProps as PrimerNavListGroupHeadingProps,
   NavListLeadingVisualProps as PrimerNavListLeadingVisualProps,
+  SlotMarker,
 } from '@primer/react'
 import {forwardRef, type PropsWithChildren} from 'react'
 import {type SxProp} from '../sx'
-import Box from './Box'
+import styled from 'styled-components'
+import {sx} from '../sx'
+import type {ForwardRefComponent} from '../polymorphic'
 
-type RefComponent<E extends HTMLElement, P> = React.ForwardRefExoticComponent<P & React.RefAttributes<E>>
+type NavListProps = PropsWithChildren<PrimerNavListProps> & SxProp & {as?: React.ElementType}
 
-type NavListProps = PropsWithChildren<PrimerNavListProps> & SxProp
+const StyledNavListImpl = styled(PrimerNavList).withConfig({
+  shouldForwardProp: prop => (prop as keyof NavListProps) !== 'sx',
+})<NavListProps>`
+  ${sx}
+`
 
-const NavListImpl = forwardRef<HTMLElement, NavListProps>(function NavList(props, ref) {
-  return <Box as={PrimerNavList} ref={ref} {...props} />
+const NavListImpl = forwardRef<HTMLElement, NavListProps>(function NavList({as, ...props}, ref) {
+  return <StyledNavListImpl ref={ref} {...(as ? {forwardedAs: as} : {})} {...props} />
 })
 
-type NavListItemProps = PropsWithChildren<PrimerNavListItemProps> & SxProp
+type NavListItemProps = PropsWithChildren<PrimerNavListItemProps> &
+  SxProp & {
+    as?: React.ElementType
+  }
 
-const NavListItem = forwardRef<HTMLAnchorElement, NavListItemProps>(function NavListItem(props, ref) {
-  // @ts-expect-error - PrimerNavList.Item is not recognized as a valid component type
-  return <Box as={PrimerNavList.Item} ref={ref} {...props} />
-})
-
-type NavListGroupProps = PropsWithChildren<PrimerNavListGroupProps> & SxProp
+const StyledNavListItem: ForwardRefComponent<'a', NavListItemProps> = styled(PrimerNavList.Item).withConfig({
+  shouldForwardProp: prop => (prop as keyof NavListItemProps) !== 'sx',
+})<NavListItemProps>`
+  ${sx}
+`
 
-const NavListGroup = forwardRef<HTMLLIElement, NavListGroupProps>(function NavListGroup(props, ref) {
-  // @ts-expect-error - PrimerNavList.Group is not recognized as a valid component type
-  return <Box as={PrimerNavList.Group} ref={ref} {...props} />
-})
+const NavListItem = forwardRef<HTMLAnchorElement, NavListItemProps>(({as, ...props}, ref) => {
+  return <StyledNavListItem {...props} {...(as ? {forwardedAs: as} : {})} ref={ref} />
+}) as ForwardRefComponent<'a', NavListItemProps>
 
-type NavListGroupHeadingProps = PropsWithChildren<PrimerNavListGroupHeadingProps> & SxProp
+type NavListLeadingVisualProps = PropsWithChildren<PrimerNavListLeadingVisualProps> &
+  SxProp & {
+    as?: React.ElementType
+  }
 
-const NavListGroupHeading = forwardRef<HTMLElement, NavListGroupHeadingProps>(function NavListGroupHeading(props, ref) {
-  // @ts-expect-error - PrimerNavList.GroupHeading is not recognized as a valid component type
-  return <Box as={PrimerNavList.GroupHeading} ref={ref} {...props} />
-}) as RefComponent<HTMLElement, NavListGroupHeadingProps>
+const StyledNavListLeadingVisual = styled(PrimerNavList.LeadingVisual).withConfig({
+  shouldForwardProp: prop => (prop as keyof NavListLeadingVisualProps) !== 'sx',
+})<NavListLeadingVisualProps>`
+  ${sx}
+`
 
-type NavListLeadingVisualProps = PropsWithChildren<PrimerNavListLeadingVisualProps> & SxProp
+const NavListLeadingVisual = forwardRef<HTMLSpanElement, NavListLeadingVisualProps>(({as, ...props}, ref) => {
+  return <StyledNavListLeadingVisual {...props} {...(as ? {forwardedAs: as} : {})} ref={ref} />
+}) as ForwardRefComponent<'span', NavListLeadingVisualProps>
 
-const NavListLeadingVisual = forwardRef<HTMLSpanElement, NavListLeadingVisualProps>(
-  function NavListLeadingVisual(props, ref) {
-    // @ts-expect-error - PrimerNavList.LeadingVisual is not recognized as a valid component type
-    return <Box as={PrimerNavList.LeadingVisual} ref={ref} {...props} />
-  },
-) as RefComponent<HTMLSpanElement, NavListLeadingVisualProps>
+;(NavListLeadingVisual as typeof NavListLeadingVisual & SlotMarker).__SLOT__ = PrimerNavList.LeadingVisual.__SLOT__
 
 type NavListCompound = React.ForwardRefExoticComponent<NavListProps & React.RefAttributes<HTMLElement>> & {
   Item: typeof NavListItem
-  Group: typeof NavListGroup
-  GroupHeading: typeof NavListGroupHeading
+  Group: typeof PrimerNavList.Group
+  GroupHeading: typeof PrimerNavList.GroupHeading
   LeadingVisual: typeof NavListLeadingVisual
   SubNav: typeof PrimerNavList.SubNav
   Divider: typeof PrimerNavList.Divider
@@ -62,8 +69,8 @@ type NavListCompound = React.ForwardRefExoticComponent<NavListProps & React.RefA
 
 const NavList: NavListCompound = Object.assign(NavListImpl, {
   Item: NavListItem,
-  Group: NavListGroup,
-  GroupHeading: NavListGroupHeading,
+  Group: PrimerNavList.Group,
+  GroupHeading: PrimerNavList.GroupHeading,
   LeadingVisual: NavListLeadingVisual,
   SubNav: PrimerNavList.SubNav,
   Divider: PrimerNavList.Divider,