Nickname: Sen
Team name: Newcastle Powersports
Race number: 25
Date of birth: 25/07/2004
Hometown/state: Jewells, New South Wales
ProMX class: MXW
ProMX debut: 2022
Career highlight: Competing in the MXGP of Australia, 2025
Make and model of 2026 motorcycle: KTM 250SX-F
Sponsors: Newcastle Powersports, Fox Racing Australia, Unifilter Australia, Will Max Graphics, Strike Seats, Mental 4 Moto, Pro Moto Suspension
First motorcycle: Yamaha PW50
Describe yourself: Sienna is outgoing, driven, hardworking, bubbly, thoughtful and grateful
Fun or interesting fact: Sienna competed in BMX racing for 10 years and represented Australia
Hobbies outside of racing: Golf, wakeboard, and spend time with family, friends and her dachshund
Race preparation: Gym, cycle, golf and practice on the motorcycle
Social media handle: Instagram: @siennagiudice