It was responding to reports of "large groups" shuttling trails and said in no uncertain terms shuttling was banned during lockdown.
Shuttling is when cyclists drive to the top of a trail, race downhill on their bikes, then drive back.
Club president Adam Carlson said he had no idea how many people had been out riding, as he had stayed inside during the lockdown.
"I find it interesting the amount of people who feel they cannot survive four weeks with only riding locally, when potentially those same people will have had injuries or illnesses that would have put them out of riding for the same amount of time."
As of March 25, the club asked riders not to use Gorge Rd Jump Park and Wynyard Terrain Park, to reduce the likelihood of injury that would add to the burden of already stretched healthcare workers.
"It is nothing but pure selfishness to take the lockdown as an excuse to go shuttling with your mates."
