About Us

Xtreme Genes was founded in 2005 by John and Lorraine Wylie. John and Lorraine had a passion for the reining horse, and envisioned a better and brighter future for the Australian reining industry.

They built Xtreme Genes up to a nationally and internationally respected Stallion management service, helping bring some of the best bloodlines in the world to the fingertips of Australian breeders.

Xtreme Genes became the agents of choice for many national and international Stallion owners, and it also became Australia's choice for mare owners looking to breed.

In 2019, Dianne Macarthur became the proud new owners of Xtreme Genes. The baton having been passed to her, Dianne set out to continue the Xtreme Genes dream. 

By keeping the same outstanding customer service, Stallion roster, support for the industry and vision that most have come to know and love, but by also bringing a new flare and drive with the addition of some leading Western Pleasure Stallions. 

The future is certainly looking bright!

Our Vision

Xtreme Genes vision is to make breeding for both Stallion and Mare owners easy. We want those who choose to breed though Xtreme Genes to have a friendly, easy and transparent breeding experience. We also aim to assist in raising the bar of quality in the Australian Reining/Western Industry, by making world class Stallions easily accessible.
Xtreme Genes aims to continue brining all of these things to the industry for many years to come.


About Dianne


Di, an Osteopath and business woman by trade, wasn't quite sure what to do with her young daughter Ruby's horse obsession. The nagging and constant horse chatter made her relent and sign her daughter up for riding lessons.

As the years rolled by and the lessons became more frequent, Di decided that instead of watching her daughter ride almost everyday of the week, she would join in too.  Di began riding lessons to join in on her daughter's passion, but that same passion secretly began growing on her too.

Di began riding with the intent to compete in the Western All Round alongside Ruby, which was also followed by a niggling interest in breeding just like her daughter.

Not long after, as Di and Ruby travelled the east coast of Australia competing, the desire to acquire carefully selected mares to begin their own breeding program became a reality. They began their journey to breed international caliber foals.