23/04/2026
Vale Trevor Diener.
The Trials SA community mourns the loss of a true stalwart of our sport. Trevor was not only an accomplished competitor, but a constant and familiar presence within our trials family.
His passion, knowledge, and willingness to support others will be deeply missed by all who rode alongside him and had the pleasure of chatting with Trev.
Our thoughts are with his family and all who knew him.
Vale Trevor Diener
02 August 1947 – 19 April 2026
Motorcycling South Australia is deeply saddened by the sudden passing of Hall of Fame inductee and Life Member Trevor Diener.
Trevor was a true legend of South Australian motorcycling, whose contribution to the sport extended far beyond his remarkable achievements on the bike. As part of one of Australia’s most successful sidecar trials teams, Trevor helped define excellence in the discipline, achieving outstanding success at both state and national level.
His induction into the Motorcycling SA Hall of Fame in 2019 recognised not only his achievements, but his lifelong dedication to the sport he loved.
Equally respected for his work off the bike, Trevor was a passionate supporter of clubs, events, and fellow riders. Recently, he was trackside doing what he loved, a reflection of his unwavering commitment to the motorcycling community.
Trevor’s legacy is one of excellence, humility, and service. He will be remembered not only for what he achieved, but for the way he supported and inspired those around him.
Our thoughts are with Trevor’s wife Jenny, his family, and all who knew him during this difficult time.
In honour of your memory, Trevor. Your contribution to motorcycling in South Australia will never be forgotten.
