Team New Zealand are reportedly poised to unveil a radical new design to their yacht for the America's Cup regatta in Bermuda.
The Kiwi syndicate's boat will feature leg-powered grinding pedestals rather than the conventional arm-powered system, according to a report on the sail-world.com website.
All will be revealed at the launch of the AC50 catamaran in Auckland on Thursday but the report claims to have broken a possible game-changing innovation.
Photographs of a test run on Auckland Harbour on Tuesday appears to show pedestals which be powered by grinders using a cycling style, generating more power than arms and shoulders.
The boat performed impressively in breezy conditions in front of what was clearly a spy boat from another syndicate, the website said.
The America's Cup Challenger series begins on May 26, leaving rivals with little time to emulate any innovation Team NZ may have devised.
Britain's Ben Ainslie Racing are the only syndicate to have launched their racing catamaran.
Cup holders Oracle Team USA are expected to launch their latest design in Bermuda on Wednesday (NZ time).