diff --git a/components/lib/tieredmenu/BaseTieredMenu.vue b/components/lib/tieredmenu/BaseTieredMenu.vue
new file mode 100644
index 000000000..8757cd979
--- /dev/null
+++ b/components/lib/tieredmenu/BaseTieredMenu.vue
@@ -0,0 +1,143 @@
+<script>
+import BaseComponent from 'primevue/basecomponent';
+import { useStyle } from 'primevue/usestyle';
+
+const styles = `
+.p-tieredmenu ul {
+    margin: 0;
+    padding: 0;
+    list-style: none;
+}
+
+.p-tieredmenu .p-submenu-list {
+    position: absolute;
+    min-width: 100%;
+    z-index: 1;
+    display: none;
+}
+
+.p-tieredmenu .p-menuitem-link {
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    text-decoration: none;
+    overflow: hidden;
+    position: relative;
+}
+
+.p-tieredmenu .p-menuitem-text {
+    line-height: 1;
+}
+
+.p-tieredmenu .p-menuitem {
+    position: relative;
+}
+
+.p-tieredmenu .p-menuitem-link .p-submenu-icon {
+    margin-left: auto;
+}
+
+.p-tieredmenu .p-menuitem-active > .p-submenu-list {
+    display: block;
+    left: 100%;
+    top: 0;
+}
+`;
+
+const inlineStyles = {
+    submenu: ({ context, processedItem }) => ({ display: context.isItemActive(processedItem) ? 'block' : 'none' })
+};
+
+const classes = {
+    root: ({ instance, props }) => [
+        'p-tieredmenu p-component',
+        {
+            'p-tieredmenu-overlay': props.popup,
+            'p-input-filled': instance.$primevue.config.inputStyle === 'filled',
+            'p-ripple-disabled': instance.$primevue.config.ripple === false
+        }
+    ],
+    menu: 'p-tieredmenu-root-list',
+    menuitem: ({ context, processedItem }) => [
+        'p-menuitem',
+        {
+            'p-menuitem-active p-highlight': context.isItemActive(processedItem),
+            'p-focus': context.isItemFocused(processedItem),
+            'p-disabled': context.isItemDisabled(processedItem)
+        }
+    ],
+    content: 'p-menuitem-content',
+    action: ({ context, isActive, isExactActive }) => [
+        'p-menuitem-link',
+        {
+            'router-link-active': isActive,
+            'router-link-active-exact': context.exact && isExactActive
+        }
+    ],
+    icon: 'p-menuitem-icon',
+    text: 'p-menuitem-text',
+    submenuIcon: 'p-submenu-icon',
+    submenu: 'p-submenu-list'
+};
+
+const { load: loadStyle, unload: unloadStyle } = useStyle(styles, { id: 'primevue_tieredmenu_style', manual: true });
+
+export default {
+    name: 'BaseTieredMenu',
+    extends: BaseComponent,
+    props: {
+        popup: {
+            type: Boolean,
+            default: false
+        },
+        model: {
+            type: Array,
+            default: null
+        },
+        appendTo: {
+            type: String,
+            default: 'body'
+        },
+        autoZIndex: {
+            type: Boolean,
+            default: true
+        },
+        baseZIndex: {
+            type: Number,
+            default: 0
+        },
+        exact: {
+            type: Boolean,
+            default: true
+        },
+        disabled: {
+            type: Boolean,
+            default: false
+        },
+        tabindex: {
+            type: Number,
+            default: 0
+        },
+        'aria-labelledby': {
+            type: String,
+            default: null
+        },
+        'aria-label': {
+            type: String,
+            default: null
+        }
+    },
+    css: {
+        classes,
+        inlineStyles
+    },
+    watch: {
+        isUnstyled: {
+            immediate: true,
+            handler(newValue) {
+                !newValue && loadStyle();
+            }
+        }
+    }
+};
+</script>
diff --git a/components/lib/tieredmenu/TieredMenu.d.ts b/components/lib/tieredmenu/TieredMenu.d.ts
index 679704a75..ff341bf06 100755
--- a/components/lib/tieredmenu/TieredMenu.d.ts
+++ b/components/lib/tieredmenu/TieredMenu.d.ts
@@ -59,10 +59,19 @@ export interface TieredMenuPassThroughOptions {
      * Uses to pass attributes to the submenu icon's DOM element.
      */
     submenuIcon?: TieredMenuPassThroughOptionType;
+    /**
+     * Uses to pass attributes to the submenu's DOM element.
+     */
+    submenu?: TieredMenuPassThroughOptionType;
     /**
      * Uses to pass attributes to the separator's DOM element.
      */
     separator?: TieredMenuPassThroughOptionType;
+    /**
+     * When enabled, it removes component related styles in the core.
+     * @defaultValue false
+     */
+    unstyled?: boolean;
 }
 
 /**
diff --git a/components/lib/tieredmenu/TieredMenu.vue b/components/lib/tieredmenu/TieredMenu.vue
index bdbab3e7a..21aa51edd 100755
--- a/components/lib/tieredmenu/TieredMenu.vue
+++ b/components/lib/tieredmenu/TieredMenu.vue
@@ -1,11 +1,10 @@
 <template>
     <Portal :appendTo="appendTo" :disabled="!popup">
         <transition name="p-connected-overlay" @enter="onEnter" @after-enter="onAfterEnter" @leave="onLeave" @after-leave="onAfterLeave">
-            <div v-if="visible" :ref="containerRef" :id="id" :class="containerClass" @click="onOverlayClick" v-bind="{ ...$attrs, ...ptm('root') }">
+            <div v-if="visible" :ref="containerRef" :id="id" :class="cx('root')" @click="onOverlayClick" v-bind="{ ...$attrs, ...ptm('root') }" data-pc-name="tieredmenu">
                 <TieredMenuSub
                     :ref="menubarRef"
                     :id="id + '_list'"
-                    class="p-tieredmenu-root-list"
                     :tabindex="!disabled ? tabindex : -1"
                     role="menubar"
                     :aria-label="ariaLabel"
@@ -33,59 +32,17 @@
 </template>
 
 <script>
-import BaseComponent from 'primevue/basecomponent';
 import OverlayEventBus from 'primevue/overlayeventbus';
 import Portal from 'primevue/portal';
 import { ConnectedOverlayScrollHandler, DomHandler, ObjectUtils, UniqueComponentId, ZIndexUtils } from 'primevue/utils';
+import BaseTieredMenu from './BaseTieredMenu.vue';
 import TieredMenuSub from './TieredMenuSub.vue';
 
 export default {
     name: 'TieredMenu',
-    extends: BaseComponent,
+    extends: BaseTieredMenu,
     inheritAttrs: false,
     emits: ['focus', 'blur', 'before-show', 'before-hide', 'hide', 'show'],
-    props: {
-        popup: {
-            type: Boolean,
-            default: false
-        },
-        model: {
-            type: Array,
-            default: null
-        },
-        appendTo: {
-            type: String,
-            default: 'body'
-        },
-        autoZIndex: {
-            type: Boolean,
-            default: true
-        },
-        baseZIndex: {
-            type: Number,
-            default: 0
-        },
-        exact: {
-            type: Boolean,
-            default: true
-        },
-        disabled: {
-            type: Boolean,
-            default: false
-        },
-        tabindex: {
-            type: Number,
-            default: 0
-        },
-        'aria-labelledby': {
-            type: String,
-            default: null
-        },
-        'aria-label': {
-            type: String,
-            default: null
-        }
-    },
     outsideClickListener: null,
     scrollHandler: null,
     resizeListener: null,
@@ -386,7 +343,7 @@ export default {
         onEnterKey(event) {
             if (this.focusedItemInfo.index !== -1) {
                 const element = DomHandler.findSingle(this.menubar, `li[id="${`${this.focusedItemId}`}"]`);
-                const anchorElement = element && DomHandler.findSingle(element, '.p-menuitem-link');
+                const anchorElement = element && DomHandler.findSingle(element, '[data-pc-section="action"]');
 
                 anchorElement ? anchorElement.click() : element && element.click();
 
@@ -424,6 +381,7 @@ export default {
                 ZIndexUtils.set('menu', el, this.baseZIndex + this.$primevue.config.zIndex.menu);
             }
 
+            DomHandler.addStyles(el, { position: 'absolute', top: '0', left: '0' });
             this.alignOverlay();
             DomHandler.focus(this.menubar);
             this.scrollInView();
@@ -624,16 +582,6 @@ export default {
         }
     },
     computed: {
-        containerClass() {
-            return [
-                'p-tieredmenu p-component',
-                {
-                    'p-tieredmenu-overlay': this.popup,
-                    'p-input-filled': this.$primevue.config.inputStyle === 'filled',
-                    'p-ripple-disabled': this.$primevue.config.ripple === false
-                }
-            ];
-        },
         processedItems() {
             return this.createProcessedItems(this.model || []);
         },
@@ -652,51 +600,3 @@ export default {
     }
 };
 </script>
-
-<style>
-.p-tieredmenu-overlay {
-    position: absolute;
-    top: 0;
-    left: 0;
-}
-
-.p-tieredmenu ul {
-    margin: 0;
-    padding: 0;
-    list-style: none;
-}
-
-.p-tieredmenu .p-submenu-list {
-    position: absolute;
-    min-width: 100%;
-    z-index: 1;
-    display: none;
-}
-
-.p-tieredmenu .p-menuitem-link {
-    cursor: pointer;
-    display: flex;
-    align-items: center;
-    text-decoration: none;
-    overflow: hidden;
-    position: relative;
-}
-
-.p-tieredmenu .p-menuitem-text {
-    line-height: 1;
-}
-
-.p-tieredmenu .p-menuitem {
-    position: relative;
-}
-
-.p-tieredmenu .p-menuitem-link .p-submenu-icon {
-    margin-left: auto;
-}
-
-.p-tieredmenu .p-menuitem-active > .p-submenu-list {
-    display: block;
-    left: 100%;
-    top: 0;
-}
-</style>
diff --git a/components/lib/tieredmenu/TieredMenuSub.vue b/components/lib/tieredmenu/TieredMenuSub.vue
index dcf3574fb..68e1ca6d4 100755
--- a/components/lib/tieredmenu/TieredMenuSub.vue
+++ b/components/lib/tieredmenu/TieredMenuSub.vue
@@ -1,11 +1,11 @@
 <template>
-    <ul v-bind="ptm('menu')">
+    <ul :class="level === 0 ? getCXOptions('menu') : getCXOptions('submenu')" :tabindex="tabindex" v-bind="level === 0 ? ptm('menu') : ptm('submenu')">
         <template v-for="(processedItem, index) of items" :key="getItemKey(processedItem)">
             <li
                 v-if="isItemVisible(processedItem) && !getItemProp(processedItem, 'separator')"
                 :id="getItemId(processedItem)"
                 :style="getItemProp(processedItem, 'style')"
-                :class="getItemClass(processedItem)"
+                :class="[getCXOptions('menuitem', { processedItem }), getItemProp(processedItem, 'class')]"
                 role="menuitem"
                 :aria-label="getItemLabel(processedItem)"
                 :aria-disabled="isItemDisabled(processedItem) || undefined"
@@ -15,32 +15,26 @@
                 :aria-setsize="getAriaSetSize()"
                 :aria-posinset="getAriaPosInset(index)"
                 v-bind="getPTOptions(processedItem, 'menuitem')"
+                :data-p-highlight="isItemActive(processedItem)"
+                :data-p-focused="isItemFocused(processedItem)"
+                :data-p-disabled="isItemDisabled(processedItem)"
             >
-                <div class="p-menuitem-content" @click="onItemClick($event, processedItem)" @mouseenter="onItemMouseEnter($event, processedItem)" v-bind="getPTOptions(processedItem, 'content')">
+                <div :class="getCXOptions('content')" @click="onItemClick($event, processedItem)" @mouseenter="onItemMouseEnter($event, processedItem)" v-bind="getPTOptions(processedItem, 'content')">
                     <template v-if="!templates.item">
                         <router-link v-if="getItemProp(processedItem, 'to') && !isItemDisabled(processedItem)" v-slot="{ navigate, href, isActive, isExactActive }" :to="getItemProp(processedItem, 'to')" custom>
-                            <a v-ripple :href="href" :class="getItemActionClass(processedItem, { isActive, isExactActive })" tabindex="-1" aria-hidden="true" @click="onItemActionClick($event, navigate)" v-bind="getPTOptions(processedItem, 'action')">
-                                <component v-if="templates.itemicon" :is="templates.itemicon" :item="processedItem.item" :class="getItemIconClass(processedItem)" />
-                                <span v-else-if="getItemProp(processedItem, 'icon')" :class="getItemIconClass(processedItem)" v-bind="getPTOptions(processedItem, 'icon')" />
-                                <span class="p-menuitem-text" v-bind="getPTOptions(processedItem, 'label')">{{ getItemLabel(processedItem) }}</span>
+                            <a v-ripple :href="href" :class="getCXOptions('action', { isActive, isExactActive })" tabindex="-1" aria-hidden="true" @click="onItemActionClick($event, navigate)" v-bind="getPTOptions(processedItem, 'action')">
+                                <component v-if="templates.itemicon" :is="templates.itemicon" :item="processedItem.item" :class="[getCXOptions('icon'), getItemProp(processedItem, 'icon')]" />
+                                <span v-else-if="getItemProp(processedItem, 'icon')" :class="[getCXOptions('icon'), getItemProp(processedItem, 'icon')]" v-bind="getPTOptions(processedItem, 'icon')" />
+                                <span :class="getCXOptions('label')" v-bind="getPTOptions(processedItem, 'label')">{{ getItemLabel(processedItem) }}</span>
                             </a>
                         </router-link>
-                        <a
-                            v-else
-                            v-ripple
-                            :href="getItemProp(processedItem, 'url')"
-                            :class="getItemActionClass(processedItem)"
-                            :target="getItemProp(processedItem, 'target')"
-                            tabindex="-1"
-                            aria-hidden="true"
-                            v-bind="getPTOptions(processedItem, 'action')"
-                        >
-                            <component v-if="templates.itemicon" :is="templates.itemicon" :item="processedItem.item" :class="getItemIconClass(processedItem)" />
-                            <span v-else-if="getItemProp(processedItem, 'icon')" :class="getItemIconClass(processedItem)" v-bind="getPTOptions(processedItem, 'icon')" />
-                            <span class="p-menuitem-text" v-bind="getPTOptions(processedItem, 'label')">{{ getItemLabel(processedItem) }}</span>
+                        <a v-else v-ripple :href="getItemProp(processedItem, 'url')" :class="getCXOptions('action')" :target="getItemProp(processedItem, 'target')" tabindex="-1" aria-hidden="true" v-bind="getPTOptions(processedItem, 'action')">
+                            <component v-if="templates.itemicon" :is="templates.itemicon" :item="processedItem.item" :class="[getCXOptions('icon'), getItemProp(processedItem, 'icon')]" />
+                            <span v-else-if="getItemProp(processedItem, 'icon')" :class="[getCXOptions('icon'), getItemProp(processedItem, 'icon')]" v-bind="getPTOptions(processedItem, 'icon')" />
+                            <span :class="getCXOptions('label')" v-bind="getPTOptions(processedItem, 'label')">{{ getItemLabel(processedItem) }}</span>
                             <template v-if="getItemProp(processedItem, 'items')">
-                                <component v-if="templates.submenuicon" :is="templates.submenuicon" class="p-submenu-icon" :active="isItemActive(processedItem)" v-bind="getPTOptions(processedItem, 'submenuIcon')" />
-                                <AngleRightIcon v-else class="p-submenu-icon" v-bind="getPTOptions(processedItem, 'submenuIcon')" />
+                                <component v-if="templates.submenuicon" :is="templates.submenuicon" :class="getCXOptions('submenuIcon')" :active="isItemActive(processedItem)" v-bind="getPTOptions(processedItem, 'submenuIcon')" />
+                                <AngleRightIcon v-else :class="getCXOptions('submenuIcon')" v-bind="getPTOptions(processedItem, 'submenuIcon')" />
                             </template>
                         </a>
                     </template>
@@ -49,8 +43,8 @@
                 <TieredMenuSub
                     v-if="isItemVisible(processedItem) && isItemGroup(processedItem)"
                     :id="getItemId(processedItem) + '_list'"
+                    :style="getSXOptions('submenu', { processedItem })"
                     role="menu"
-                    class="p-submenu-list"
                     :menuId="menuId"
                     :focusedItemId="focusedItemId"
                     :items="processedItem.items"
@@ -76,14 +70,14 @@
 </template>
 
 <script>
-import BaseComponent from 'primevue/basecomponent';
 import AngleRightIcon from 'primevue/icons/angleright';
 import Ripple from 'primevue/ripple';
 import { ObjectUtils } from 'primevue/utils';
+import BaseTieredMenu from './BaseTieredMenu.vue';
 
 export default {
     name: 'TieredMenuSub',
-    extends: BaseComponent,
+    extends: BaseTieredMenu,
     emits: ['item-click', 'item-mouseenter'],
     props: {
         menuId: {
@@ -113,6 +107,10 @@ export default {
         exact: {
             type: Boolean,
             default: true
+        },
+        tabindex: {
+            type: Number,
+            default: 0
         }
     },
     methods: {
@@ -136,6 +134,18 @@ export default {
                 }
             });
         },
+        getCXOptions(key, params) {
+            return this.cx(key, {
+                ...params,
+                context: this
+            });
+        },
+        getSXOptions(key, params) {
+            return this.sx(key, true, {
+                ...params,
+                context: this
+            });
+        },
         isItemActive(processedItem) {
             return this.activeItemPath.some((path) => path.key === processedItem.key);
         },
@@ -167,29 +177,6 @@ export default {
         getAriaPosInset(index) {
             return index - this.items.slice(0, index).filter((processedItem) => this.isItemVisible(processedItem) && this.getItemProp(processedItem, 'separator')).length + 1;
         },
-        getItemClass(processedItem) {
-            return [
-                'p-menuitem',
-                this.getItemProp(processedItem, 'class'),
-                {
-                    'p-menuitem-active p-highlight': this.isItemActive(processedItem),
-                    'p-focus': this.isItemFocused(processedItem),
-                    'p-disabled': this.isItemDisabled(processedItem)
-                }
-            ];
-        },
-        getItemActionClass(processedItem, routerProps) {
-            return [
-                'p-menuitem-link',
-                {
-                    'router-link-active': routerProps && routerProps.isActive,
-                    'router-link-active-exact': this.exact && routerProps && routerProps.isExactActive
-                }
-            ];
-        },
-        getItemIconClass(processedItem) {
-            return ['p-menuitem-icon', this.getItemProp(processedItem, 'icon')];
-        },
         getSeparatorItemClass(processedItem) {
             return ['p-menuitem-separator', this.getItemProp(processedItem, 'class')];
         }