The launch of Monster Juiced Aussie Lemonade and Monster Ultra Rosa comes as the brand is worth more than £500m and is growing by 19%.
It has also brought back its snowsport-themed promotion across the Monster Ultra range.
The Aussie Lemonade variety has been launched to capitalise on the appeal of lemonade, a segment worth £164m.
Meanwhile Ultra Rosa combines a red berry blend with a floral finish.
Both varieties will be available in 500ml plain packs, with four-can multipacks available to larger grocery stores.
Pippa Collins, associate director commercial development at CCEP GB, said: “Monster has led the diversification of the energy sector in recent years, with innovation covering a variety of flavours, juice blends and functional benefits, that have helped to make energy drinks a mainstream choice for shoppers.
“Monster Juiced Aussie Lemonade has already been popular in the US and Monster Ultra Rosa delivered the second-highest rate of sale within the Ultra range in Q4 of last year while only in limited distribution. We’re confident the new nationwide arrivals will drive sustained growth for the Monster brand, bringing even more excitement to the energy fixture.”
Monster’s Ultra promotion, running until 6 March, gives one shopper the chance to win three days of skiing or snowboarding in Switzerland, with accommodation, lift pass and equipment rental and exclusive Monster hospitality perks.