Em Rusciano's co host Harley Breen has quit their show on live radio.

The Em and Harley show is losing one of its hosts.

Comedian Harley Breen announced he’d be leaving the radio show he hosts with singer and comedian Em Rusciano at the end of the year.

“I’m heading back to the fiscally responsible job of being a touring stand up – very smart. It’s by no means an easy decision, but it’s absolutely the right one,” he said on air this morning.

“I love a lot of things that I’ve been fortunate enough to have in my life: my fiancee, my boys, and stand up. So I’ve made the choice to give those things my full attention going into the future.”

He said he was very grateful for the opportunity and “grateful to you Em for vouching for me – nay, flat-out forcing me on the people of Sydney”.

The big guy has decided to leave the show at the end of the year. I’m very sad, but I understand why. He’s got young kids and is a very talented stand-up and wants to spend more time with both. Ed Kavalee will be stepping in to co-host with me next year which is pretty rad. I’m going to miss HB terribly, but I get it. X

A post shared by e m r u s c i a n o (@emrusciano) on Nov 6, 2017 at 2:11pm PST

“The big guy has decided to leave the show at the end of the year. I’m very sad, but I understand why,” Rusciano wrote on Instagram this morning.

“He’s got young kids and is a very talented stand-up and wants to spend more time with both…I’m going to miss HB terribly, but I get it.”

Breen’s replacement has also been announced and he’s no stranger to TV and radio.

Have You Been Paying Attention‘s Ed Kavalee will be joining the show next year, after announcing he was leaving Triple M last month.

“Harley has been a terrific Ying to Em’s Yang and he’ll continue to be a friend of the show. We love Harley and wish him all the best,” Hit Network’s Head of Content Gemma Fordham said.

Attention Breenage mutant ninja turtles. The following may be of some interest to some of you and not to others. But one fact about you all remains: you’re bloody heroes in a half shell… turtle power. What. Sorry I got distracted. Today on the Em Rusciano radio show with Harley Breen on 2Day FM I announced that I’ll be finishing up at the end this year in December and heading back to the fiscally responsible job of being a touring stand-up. It was by no means an easy decision. But it’s absolutely the right one. I love a lot of things that I’ve been fortunate enough to have in my life. I love my fiancée (i just looked up fiancée and it is a problematic word… she’s my girlfriend. the love of my life, me mate, my best friend.) I love my boys and raising them with my mate… and I love stand-up. So I’ve made the choice to give those things my full attention going into the future… At regular speed… I’m not announcing time travel. I am grateful for the opportunity, to Em Rusciano for vouching for me, nay flat out forcing me on the people of Sydney, and to the Hit network for taking a chance, and backing me. I’ll pop by next year at 8.55am with a coffee. And for what it’s worth I think Ed Kavalee is a brilliant decision for the roll and I hope the show becomes the raging success it deserves to be. My national tour HARLEY BREEN – FLAT OUT DOING NOTHING Will be announced and on sale soon. Good plug. It’s been an excellent ride. There’s still 5 weeks to go. Shut up, your counting… I’ll be back tomorrow for hump day. It’s nit a root day, it’s a Wednesday.

A post shared by Harley Breen (@harley.breen) on Nov 6, 2017 at 1:51pm PST

“We know the Sydney listeners will love the addition of Ed to the show.”

“And for what it’s worth I think Ed Kavalee is a brilliant decision for the roll and I hope the show becomes the raging success it deserves to be,” Breen wrote on Instagram.

After an initial lift in audience numbers at the start of the year after replacing Rove McManus and Sam Frost, the ratings dropped down to 4 per cent audience share in the latest radio survey. In contrast, WSFM’s Jonesy and Amanda and KIIS FM’s Kyle and Jackie O both have a 10.3 per cent share.

News.com.au reported that according to industry insiders, Breen and Rusciano had a “rocky relationship”. In May, the pair reportedly stopped speaking to each other off air for a week after they had a disagreement in the studio.