diff --git a/packages/shared/ReactFeatureFlags.js b/packages/shared/ReactFeatureFlags.js
index facb9ebc1dfbf..0a532cf9296a5 100644
--- a/packages/shared/ReactFeatureFlags.js
+++ b/packages/shared/ReactFeatureFlags.js
@@ -151,7 +151,7 @@ export const enableUseRefAccessWarning = false;
 // Enables time slicing for updates that aren't wrapped in startTransition.
 export const forceConcurrentByDefaultForTesting = false;
 
-export const enableUnifiedSyncLane = __EXPERIMENTAL__;
+export const enableUnifiedSyncLane = true;
 
 // Adds an opt-in to time slicing for updates that aren't wrapped in startTransition.
 export const allowConcurrentByDefault = false;
diff --git a/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js b/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
index f2b6a5ae36d93..83a6be7373cba 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
@@ -22,6 +22,7 @@ import typeof * as DynamicFlagsType from 'ReactNativeInternalFeatureFlags';
 
 export const enableUseRefAccessWarning = __VARIANT__;
 export const enableDeferRootSchedulingToMicrotask = __VARIANT__;
+export const enableUnifiedSyncLane = __VARIANT__;
 export const alwaysThrottleRetries = __VARIANT__;
 export const useMicrotasksForSchedulingInFabric = __VARIANT__;
 export const passChildrenWhenCloningPersistedNodes = __VARIANT__;
diff --git a/packages/shared/forks/ReactFeatureFlags.native-fb.js b/packages/shared/forks/ReactFeatureFlags.native-fb.js
index 9704454dec62a..9645e0fc953a4 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fb.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fb.js
@@ -20,6 +20,7 @@ import * as dynamicFlags from 'ReactNativeInternalFeatureFlags';
 export const {
   enableUseRefAccessWarning,
   enableDeferRootSchedulingToMicrotask,
+  enableUnifiedSyncLane,
   alwaysThrottleRetries,
   useMicrotasksForSchedulingInFabric,
   passChildrenWhenCloningPersistedNodes,
@@ -72,7 +73,6 @@ export const disableSchedulerTimeoutInWorkLoop = false;
 export const enableLazyContextPropagation = false;
 export const enableLegacyHidden = true;
 export const forceConcurrentByDefaultForTesting = false;
-export const enableUnifiedSyncLane = false;
 export const allowConcurrentByDefault = true;
 export const enableCustomElementPropertySupport = false;
 
diff --git a/packages/shared/forks/ReactFeatureFlags.native-oss.js b/packages/shared/forks/ReactFeatureFlags.native-oss.js
index 75cdbc26ff0b2..eea399034b248 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-oss.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-oss.js
@@ -57,7 +57,7 @@ export const disableSchedulerTimeoutInWorkLoop = false;
 export const enableLazyContextPropagation = false;
 export const enableLegacyHidden = false;
 export const forceConcurrentByDefaultForTesting = false;
-export const enableUnifiedSyncLane = false;
+export const enableUnifiedSyncLane = true;
 export const allowConcurrentByDefault = false;
 export const enableCustomElementPropertySupport = false;
 
diff --git a/packages/shared/forks/ReactFeatureFlags.test-renderer.native.js b/packages/shared/forks/ReactFeatureFlags.test-renderer.native.js
index 21dc703485278..a441a1689a191 100644
--- a/packages/shared/forks/ReactFeatureFlags.test-renderer.native.js
+++ b/packages/shared/forks/ReactFeatureFlags.test-renderer.native.js
@@ -56,7 +56,7 @@ export const disableSchedulerTimeoutInWorkLoop = false;
 export const enableLazyContextPropagation = false;
 export const enableLegacyHidden = false;
 export const forceConcurrentByDefaultForTesting = false;
-export const enableUnifiedSyncLane = false;
+export const enableUnifiedSyncLane = true;
 export const allowConcurrentByDefault = true;
 
 export const consoleManagedByDevToolsDuringStrictMode = false;
diff --git a/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js b/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
index 3b5f2eed060f3..09d74c1475415 100644
--- a/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
@@ -57,7 +57,7 @@ export const disableSchedulerTimeoutInWorkLoop = false;
 export const enableLazyContextPropagation = false;
 export const enableLegacyHidden = false;
 export const forceConcurrentByDefaultForTesting = false;
-export const enableUnifiedSyncLane = false;
+export const enableUnifiedSyncLane = true;
 export const allowConcurrentByDefault = true;
 export const enableCustomElementPropertySupport = false;
 
diff --git a/scripts/flow/xplat.js b/scripts/flow/xplat.js
index 86583241f6625..8af7eae07f638 100644
--- a/scripts/flow/xplat.js
+++ b/scripts/flow/xplat.js
@@ -10,6 +10,7 @@
 declare module 'ReactNativeInternalFeatureFlags' {
   declare export var enableUseRefAccessWarning: boolean;
   declare export var enableDeferRootSchedulingToMicrotask: boolean;
+  declare export var enableUnifiedSyncLane: boolean;
   declare export var alwaysThrottleRetries: boolean;
   declare export var useMicrotasksForSchedulingInFabric: boolean;
   declare export var passChildrenWhenCloningPersistedNodes: boolean;