diff --git a/Add-Ability-to-Swap-Bikes-Whenever.md b/Add-Ability-to-Swap-Bikes-Whenever.md
new file mode 100644
index 0000000..1f6d6f6
--- /dev/null
+++ b/Add-Ability-to-Swap-Bikes-Whenever.md
@@ -0,0 +1,93 @@
+By devolov
+**Goal:** Make it so the Mach and Acro bike can be swapped whenever.
+
+![bike](https://github.com/pret/pokeemerald/assets/36523934/bf5e20bb-12d5-4395-a573-044428e38e4c)
+
+
+```diff
+------------------------------- src/item_menu.c -------------------------------
+index c2518cc20..a5f534b9d 100755
+@@ -97,8 +97,9 @@ enum {
+     ACTION_BY_AMOUNT,
+     ACTION_BY_NUMBER,
+     ACTION_REGISTER,
++    ACTION_SWAP,
+     ACTION_DUMMY,
+ };
+ 
+ enum {
+@@ -206,8 +207,9 @@ static void BagMenu_ItemPrintCallback(u8, u32, u8);
+ static void ItemMenu_UseOutOfBattle(u8);
+ static void ItemMenu_Toss(u8);
+ static void ItemMenu_Register(u8);
++static void ItemMenu_Swap(u8);
+ static void ItemMenu_Give(u8);
+ static void ItemMenu_Cancel(u8);
+ static void ItemMenu_UseInBattle(u8);
+@@ -300,8 +302,9 @@ static const u8 sMenuText_ByAmount[] = _("Amount");
+ static const u8 sMenuText_ByNumber[] = _("Number");
+ static const u8 sText_NothingToSort[] = _("There's nothing to sort!");
+ static const u8 sMenuText_Tap[] = _("Tap");
+ static const u8 sMenuText_Hold[] = _("Hold");
++static const u8 sMenuText_Swap[] = _("SWAP");
+ static const u8 sText_RegisterHow[] = _("Register this\nitem by tapping or\nholding SELECT?");
+ static const struct MenuAction sItemMenuActions[] = {
+     [ACTION_USE]               = {gMenuText_Use,      ItemMenu_UseOutOfBattle},
+     [ACTION_TOSS]              = {gMenuText_Toss,     ItemMenu_Toss},
+@@ -322,8 +325,9 @@ static const struct MenuAction sItemMenuActions[] = {
+     [ACTION_BY_NUMBER]         = {sMenuText_ByNumber, ItemMenu_SortByID},
+     [ACTION_BY_AMOUNT]         = {sMenuText_ByAmount, ItemMenu_SortByAmount},
+     [ACTION_REGISTER]          = {sMenuText_Tap,      ItemMenu_Register},
++    [ACTION_SWAP]              = {sMenuText_Swap,     ItemMenu_Swap},
+     [ACTION_DUMMY]             = {gText_EmptyString2, NULL}
+ };
+ 
+ // these are all 2D arrays with a width of 2 but are represented as 1D arrays
+@@ -1722,8 +1726,9 @@ static void OpenContextMenu(u8 taskId)
+                 if (gSaveBlock1Ptr->registeredItem == gSpecialVar_ItemId || gSaveBlock1Ptr->registeredLongItem == gSpecialVar_ItemId)
+                     gBagMenu->contextMenuItemsBuffer[1] = ACTION_DESELECT;
+                 if (gSpecialVar_ItemId == ITEM_MACH_BIKE || gSpecialVar_ItemId == ITEM_ACRO_BIKE)
+                 {
++                    gBagMenu->contextMenuItemsBuffer[2] = ACTION_SWAP;
+                     if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_MACH_BIKE | PLAYER_AVATAR_FLAG_ACRO_BIKE))
+                         gBagMenu->contextMenuItemsBuffer[0] = ACTION_WALK;
+                 }
+                 break;
+@@ -2045,8 +2050,35 @@ static void ItemMenu_Register(u8 taskId)
+    tListTaskId = ListMenuInit(&gMultiuseListMenuTemplate, *scrollPos, *cursorPos);
+    ScheduleBgCopyTilemapToVram(0);
+    ItemMenu_Cancel(taskId);
+}
+ 
++static void ItemMenu_Swap(u8 taskId)
++{
++    s16 *data = gTasks[taskId].data;
++    u16 *scrollPos = &gBagPosition.scrollPosition[gBagPosition.pocket];
++    u16 *cursorPos = &gBagPosition.cursorPosition[gBagPosition.pocket];
++    u8 itemListPos = GetItemListPosition(gBagPosition.pocket);
++
++    if (gSpecialVar_ItemId == ITEM_MACH_BIKE)
++        gBagPockets[gBagPosition.pocket].itemSlots[itemListPos].itemId = ITEM_ACRO_BIKE;
++    else if (gSpecialVar_ItemId == ITEM_ACRO_BIKE)
++        gBagPockets[gBagPosition.pocket].itemSlots[itemListPos].itemId = ITEM_MACH_BIKE;
++    SwapRegisteredBike();
++    if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_MACH_BIKE))
++        SetPlayerAvatarTransitionFlags(PLAYER_AVATAR_FLAG_ACRO_BIKE);
++    else if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_ACRO_BIKE))
++        SetPlayerAvatarTransitionFlags(PLAYER_AVATAR_FLAG_MACH_BIKE);
++
++    BagDestroyPocketScrollArrowPair();
++    RemoveContextWindow();
++    DestroyListMenuTask(tListTaskId, scrollPos, cursorPos);
++    LoadBagItemListBuffers(gBagPosition.pocket);
++    tListTaskId = ListMenuInit(&gMultiuseListMenuTemplate, *scrollPos, *cursorPos);
++    ScheduleBgCopyTilemapToVram(0);
++    ItemMenu_Cancel(taskId);
++
++}
++
+static void Task_LoadRegisterOptions(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    if (gSaveBlock1Ptr->registeredItem == gSpecialVar_ItemId){
+```
\ No newline at end of file