Builth Wells remain at the top of Division Two West after a 34-14 win at Gorseinon.
Dan Davies, Chris Davies, Matthew Lewis, Gethin Davies and George Jenkins scored the five tries that earned the Bulls a bonus point.
Holding games in hands over Builth Wells, Loughor and Bridgend Athletic also picked up bonus point victories away at BP Llandarcy (16-37) and Waunarlwydd (15-44) respectively.
Pontyberem remain top of Division Three West after sneaking past Laugharne 6-3 in a game that saw no tries scored.
Quite the opposite in Llanelli, as Tumble fell to a 76-0 defeat against a Cardigan side that crossed 11 times.
Division Three South West leaders Tondu edged out Natyffyllon 20-14, with closest rivals Aberavon Quins similarly squeaking home 21-16 against Skewen.
Llandeilo thrashed Burry Port 48-3, notching eight tries in the process, to extend their lead at the top of Four West.
There was also a bonus point for Cwmgors, who broke their duck at the bottom of the table in a 19-12 defeat to Hendy.
Division Four South West leaders Resolven remain unbeaten after their 29-20 win over Neath Athletic.
Cefneithin beat Llangwm 64-3 at the summit of Division Five West, with second place Furnace United keeping up the pace through a 25-10 win over St Clears.
With Alltwen not playing, Abercrave used their game in hand to cement themselves at the top of the Division Five South West table through a 56-5 victory at Bynea.
Penlan won 17-11 at Nantgaredig at the top of Division Six West.
The last five years have been an emotional rollercoaster on and off the pitch for RGC1404. Promotion to the Principality Premiership was the culmination of five years of hard work and investment in North Wales. WRU TV caught up with prop Joe Simpson, who was one of the first intake of WRU North Wales Academy players in 2010.
Ebbw Vale captain Damien Hudd picked up the biggest accolade of the night at the 11th Principality Premiership Awards Evening held at Principality Stadium, after leading his side to the title for the first time.
Wales assistant coach Robin McBryde is predicting a tough battle against England on Sunday despite the fact they may not be considered to be at full strength. Players will be out to impress Eddie Jones which makes England a dangerous proposition, he says.
Wales U20 captain Tom Phillips and performance psychologist Dr Rich Neil explain why spending three days at Monmouth RFC has further strengthened the togetherness of the squad ahead of the #WorldRugbyU20s