BUILTH Wells produced their best display of the season to prevail triumphant at Swalec Division Two West Central high flyers Nantyfyllon.
A brace of penalties from Nigel James gave the hosts an early lead but Builth soon managed to get a foothold in the game.
Strong runs from second rowers Nathan Jones and Lucas Evans culminated in a brace of tries from two driving mauls with Ben Pugh crossing the whitewash.
Harry Jenkinson converted both and added a penalty as the Bulls established a 17-6 interval lead.
Nantyfyllon came out firing after the break and reduced the arrears following a series of forward surges with Ross Boast crossing for try in the corner
However the Bulls steadied their nerves with a brace of penalties from Jenkinson to comfortably see out the game and continue their rise up the table.
BUILTH: Luxton, Pugh, T Davies, Evans, N Jones, Brown, Bowen, Samuel, R Davies, Jenkinson, G Jones, Boore, B Davies, Bagget, Lewis. Reps - D Davies, G Davies, Dawes, R Jones, Healey, Jarman