diff --git a/src/cvars.cpp b/src/cvars.cpp
index 2b439d89e..88847ce6f 100644
--- a/src/cvars.cpp
+++ b/src/cvars.cpp
@@ -903,6 +903,7 @@ extern CV_PossibleValue_t renderhitbox_cons_t[];
 consvar_t cv_renderhitbox = PlayerCheat("renderhitbox", "Off").values(renderhitbox_cons_t).description("Show hitboxes around objects");
 
 consvar_t cv_mentalsonic = PlayerCheat("mentalsonic", "Off").values(CV_OnOff).flags(CV_HIDDEN).description("Works out at the library");
+consvar_t cv_4thgear = PlayerCheat("4thgear", "Off").values(CV_OnOff).flags(CV_HIDDEN).description("Surpassing your limits!");
 
 //
 // Dummy variables used solely in the menu system.
diff --git a/src/d_netcmd.h b/src/d_netcmd.h
index d1d0fa643..2d0a19c52 100644
--- a/src/d_netcmd.h
+++ b/src/d_netcmd.h
@@ -98,7 +98,7 @@ extern consvar_t cv_kartdebugstart;
 extern consvar_t cv_debugrank;
 extern consvar_t cv_battletest;
 
-extern consvar_t cv_mentalsonic;
+extern consvar_t cv_mentalsonic, cv_4thgear;
 
 typedef enum {
 	CV_CAPSULETEST_OFF,
diff --git a/src/k_kart.c b/src/k_kart.c
index 0444d3c11..8ae672d86 100644
--- a/src/k_kart.c
+++ b/src/k_kart.c
@@ -422,6 +422,10 @@ fixed_t K_GetKartGameSpeedScalar(SINT8 value)
 	// Normal = 100%
 	// Hard = 118.75%
 	// Nightmare = 137.5% ?!?!
+
+	if (cv_4thgear.value && !netgame && (!demo.playback || !demo.netgame) && !modeattacking)
+		value = 3;
+
 	return ((13 + (3*value)) << FRACBITS) / 16;
 }
 
diff --git a/src/m_cheat.c b/src/m_cheat.c
index 4564fe9bb..1ad272ab0 100644
--- a/src/m_cheat.c
+++ b/src/m_cheat.c
@@ -177,6 +177,22 @@ static UINT8 cheatf_mentalsonic(void)
 	return 1;
 }
 
+static UINT8 cheatf_4thgear(void)
+{
+	cv_4thgear.value = !(cv_4thgear.value);
+	if (cv_4thgear.value)
+	{
+		M_StartMessage("Restraint device compromised!", "Local play sped up to ""\x85""4th Gear!""\x80""\nLet's see what you're made of!\n\n""\x86""No effect in netplay and attack modes.", NULL, MM_NOTHING, NULL, NULL);
+		S_StartSound(NULL, sfx_gshc4);
+	}
+	else
+	{
+		S_StartSound(NULL, sfx_kc46);
+	}
+
+	return 1;
+}
+
 #ifdef DEVELOP
 static UINT8 cheatf_devmode(void)
 {
@@ -254,6 +270,13 @@ static cheatseq_t cheat_mentalsonic = {
 	NULL, cheatf_mentalsonic,
 	(UINT8[]){ SCRAMBLE('m'), SCRAMBLE('e'), SCRAMBLE('n'), SCRAMBLE('t'), SCRAMBLE('a'), SCRAMBLE('l'), SCRAMBLE(' '), SCRAMBLE('s'), SCRAMBLE('o'), SCRAMBLE('n'), SCRAMBLE('i'), SCRAMBLE('c'), 0xff }
 };
+static cheatseq_t cheat_4thgear = {
+	NULL, cheatf_4thgear,
+	(UINT8[]){ SCRAMBLE('l'), SCRAMBLE('e'), SCRAMBLE('t'), SCRAMBLE('\''), SCRAMBLE('s'), SCRAMBLE(' '),
+		SCRAMBLE('g'), SCRAMBLE('e'), SCRAMBLE('t'), SCRAMBLE(' '),
+		SCRAMBLE('f'), SCRAMBLE('i'), SCRAMBLE('r'), SCRAMBLE('e'), SCRAMBLE('d'), SCRAMBLE(' '),
+		SCRAMBLE('u'), SCRAMBLE('p'), SCRAMBLE('!'), 0xff }
+};
 
 
 #ifdef DEVELOP
@@ -275,6 +298,7 @@ cheatseq_t *cheatseqlist[] =
 	&cheat_savetheanimals,
 	&cheat_savetheframes,
 	&cheat_mentalsonic,
+	&cheat_4thgear,
 #ifdef DEVELOP
 	&cheat_devmode,
 	&cheat_skipgoner,