The six-figure deal comes hot on the heels of another big budget announcement in the Scarlets on-going shirt sponsorship partnership with Carlsberg/Tetley.
Llanelli, Welsh rugby's standard bearers in Europe, have lifted Welsh morale ahead of the Six Nations with consecutive victories over English opposition in club rugby's flagship European tournament.
And this latest deal proves that success on the pitch breeds success off it at Stradey Park, as the Scarlets toast wins over Leicester Tigers and Bath with a further significant boost to their financial security until 2005.
"The relationship with Llanelli over the last two years has been a massive plus for Kooga," said Kooga managing director Bill Newton.
"They are the best supported, best run and most famous club in Wales and a rugby icon known throughout the world. We have been selling 10,000 shirts a year since the start of our deal in 1999 and confidently expect to be hitting the 20,000 mark this season. That makes Llanelli the biggest selling club shirt in Wales and probably the top three or four in Great Britain and Ireland."
The new deal will mean a change of strip for Llanelli next season, but chief executive Stuart Gallacher assures fans that the great tradition of the Scarlets will never be lost.
"There will be no great departure from the Scarlet colours as we our proud to have the greatest club history in the Welsh game, but there will be afresh look to the kit next year.
"Kooga have made a three year commitment, and added significant additional money to the existing contract, as a direct consequence of the success and profile this club has provided to them over the past couple of years.
"This money and the extended commitment, means Llanelli can properly plan for the future and invest in player development at all levels over the long term.
"And it is for that commitment in particular that we would like to thank Kooga today. But we believe sponsorship is a two way street at Llanelli and would also like to commit ourselves to providing Kooga with the best possible profile by association in the long term future."
Llanelli's immediate future is a push for honours on two fronts. The Scarlets currently sit second in the Welsh/Scottish League, and they are waiting for the Heineken Cup- semi-final draw on February 5th.
The Half a Game initiative is currently sweeping across Wales and proving a major success. The scheme aims to give every young player at least half a game every weekend. WRU TV recently visited a festival in Narberth where clubs have fully embraced the initiative.
Both Bargoed and Swansea were seeking their first win of the Principality Premiership season this afternoon. It proved a fruitful day for the hosts - not only did they win, but Bargoed claimed a try bonus point.
Cardiff managed to keep their unbeaten record at home intact, but only just as Bridgend made them work extremely hard before the Blue and Blacks secured a hard fought Principality Premiership win at the BT Sport Arms Park last night.
Former Wales back row Andy Powell gives a guided tour of The Wern, home of Merthyr RFC, who are determined to prove a lot of people wrong and make their mark in their first season in the Principality Premiership.
Wales Sevens head coach Gareth Williams looks back on the Rio Sevens success where he helped GB win silver. He believes the successful campaign is a huge boost to his Welsh squad as they prepare for another World Series, as WRU TV's Graeme Gillespie discovers
British and Irish Lions head coach Warren Gatland will be heading back home to take on the All Blacks next year where for him, success for 2017 is all about going to New Zealand and winning a Test Series.
Last week all roads led to Eugene Cross Park where defending champions Ebbw Vale hosted this season's launch of the Principality Premiership. WRU TV's Graeme Gillespie was there to capture the thoughts of Damien Hudd, captain of Ebbw Vale, and WRU Head of Performance, Geraint John.
Llandovery made it three in a row when they defeated Aberavon in the final of the National Foster's 7s at BT Sport Cardiff Arms Park on Sunday. On another eventful day of sevens, Newport claimed the Plate and the Dragons won the women's crown
Last week saw Cardiff welcome players from around the world for the 21st Golden Oldies Festival. The tournament features players over 35 years of age, and this year's event saw a select few represent the WRU in a 'friendly' against the Wooden Spoon.
Wales Under 18 captain Callum Bradbury is delighted to have seen his side claim a narrow 18-17 victory against a strong SA Schools 'A' side to end the three-match Under 19 International Series in South Africa on a high note.