diff --git a/src/doomstat.h b/src/doomstat.h
index dd0e8bc68..9dc8f4034 100644
--- a/src/doomstat.h
+++ b/src/doomstat.h
@@ -869,6 +869,7 @@ extern boolean rainbowstartavailable;
 extern tic_t linecrossed;
 extern boolean inDuel;
 extern UINT8 extralaps;
+extern UINT8 overtimecheckpoints;
 
 extern tic_t bombflashtimer;	// Used to avoid causing seizures if multiple mines explode close to you :)
 extern boolean legitimateexit;
diff --git a/src/g_game.c b/src/g_game.c
index dfcc624f1..226ea6d67 100644
--- a/src/g_game.c
+++ b/src/g_game.c
@@ -321,6 +321,7 @@ boolean rainbowstartavailable; // Boolean, keeps track of if the rainbow start w
 tic_t linecrossed; // For Time Attack
 boolean inDuel; // Boolean, keeps track of if it is a 1v1
 UINT8 extralaps; // Duel extensions! 
+UINT8 overtimecheckpoints; // Duel overtime speedups!
 
 // Client-sided, unsynched variables (NEVER use in anything that needs to be synced with other players)
 tic_t bombflashtimer = 0;	// Cooldown before another FlashPal can be intialized by a bomb exploding near a displayplayer. Avoids seizures.
diff --git a/src/k_kart.c b/src/k_kart.c
index 1fa198003..27969e032 100644
--- a/src/k_kart.c
+++ b/src/k_kart.c
@@ -146,6 +146,7 @@ void K_TimerReset(void)
 	inDuel = rainbowstartavailable = false;
 	linecrossed = 0;
 	extralaps = 0;
+	overtimecheckpoints = 0;
 	timelimitintics = extratimeintics = secretextratime = 0;
 	g_pointlimit = 0;
 }
@@ -466,7 +467,10 @@ fixed_t K_GetKartGameSpeedScalar(SINT8 value)
 	if (cv_4thgear.value && !netgame && (!demo.playback || !demo.netgame) && !modeattacking)
 		value = 3;
 
-	return ((13 + (3*value)) << FRACBITS) / 16;
+	fixed_t base = ((13 + (3*value)) << FRACBITS) / 16;
+	fixed_t duel = overtimecheckpoints*(1<<FRACBITS)/3;
+
+	return base + duel;
 }
 
 // Array of states to pick the starting point of the animation, based on the actual time left for invincibility.
@@ -4150,6 +4154,14 @@ void K_CheckpointCrossAward(player_t *player)
 	if (inDuel && player->position == 1)
 	{
 		player->duelscore += 1;
+
+		if (leveltime > DUELOVERTIME)
+		{
+			overtimecheckpoints++;
+			K_AddMessage(va("MARGIN BOOST x%d", overtimecheckpoints), true, false);
+			S_StartSound(NULL, sfx_gsha6);
+		}
+
 		for (UINT8 i = 0; i < MAXPLAYERS; i++)
 		{
 			if (playeringame[i] && !players[i].spectator && &players[i] != player)
diff --git a/src/k_kart.h b/src/k_kart.h
index bf73ffcf2..3e4995dd2 100644
--- a/src/k_kart.h
+++ b/src/k_kart.h
@@ -74,6 +74,8 @@ Make sure this matches the actual number of states
 #define RINGVOLUMEREGEN 1
 #define RINGTRANSPARENCYREGEN 3
 
+#define DUELOVERTIME (3*60*TICRATE)
+
 #define MIN_WAVEDASH_CHARGE ((11*TICRATE/16)*9)
 
 #define MAXTOPACCEL (12*FRACUNIT)
diff --git a/src/p_saveg.c b/src/p_saveg.c
index d1999a03e..a4679ea8d 100644
--- a/src/p_saveg.c
+++ b/src/p_saveg.c
@@ -6681,6 +6681,7 @@ static void P_NetArchiveMisc(savebuffer_t *save, boolean resending)
 	WRITEUINT8(save->p, rainbowstartavailable);
 	WRITEUINT8(save->p, inDuel);
 	WRITEUINT8(save->p, extralaps);
+	WRITEUINT8(save->p, overtimecheckpoints);
 
 	WRITEUINT32(save->p, introtime);
 	WRITEUINT32(save->p, starttime);
@@ -6888,6 +6889,7 @@ static boolean P_NetUnArchiveMisc(savebuffer_t *save, boolean reloading)
 	rainbowstartavailable = (boolean)READUINT8(save->p);
 	inDuel = (boolean)READUINT8(save->p);
 	extralaps = (boolean)READUINT8(save->p);
+	overtimecheckpoints = (boolean)READUINT8(save->p);
 
 	introtime = READUINT32(save->p);
 	starttime = READUINT32(save->p);