Derek Scott Ferguson was the "linchpin" connecting s alleged murderer to the motorbike and helmet used in his killing, a court has heard.
The 27-year-old Horsley man appeared in Wollongong Local Court yesterday where his application for bail was denied.
He was accused of procuring a helmet and motorbike on behalf of Blackbutt man Matthew Paul Wiggins, 25, who police allege gunned down Mr Janceski outside his parents' Berkeley home on April 14 last year.
Ferguson used two of his close friends to source the items, the court heard.
He is charged with being an accessory to murder and participating in a criminal group.
He did not enter a plea yesterday.
Police will allege Ferguson enlisted friend Christopher Madden, 25, of Horsley, to buy a motorbike on his behalf under a false name to conceal both his and Ferguson's identities.
Madden paid the $5000 purchase price in bundles of cash, raising the suspicions of the seller, the court heard.
On the day of Janceski's murder, Wiggins and Ferguson exchanged a flurry of phone calls and texts, which suddenly halted around the time of the alleged shooting, facts before the court said.
Wiggins has been charged with murdering Mr Janceski and inflicting grievous bodily harm on Mr Janceski's father.
He did not apply for bail when he appeared before Wollongong Local Court on Wednesday.
Opposing bail yesterday, police prosecutor Sergeant Shannon Ryan said Ferguson had given inconsistent accounts about the motorbike in "an attempt by Mr Ferguson to run away from the crucial piece of evidence at a million miles an hour".
Sgt Ryan said the only rational explanation was that Ferguson was directly involved and helped Wiggins in the lead-up to the alleged murder.
He said the protection of the prosecution case, the community, and a number of witnesses expected to be called to give evidence were of paramount importance.
Defence solicitor Matt Russoniello, acting for Ferguson, said the police case against his client was lacking any strong evidence.
"The Crown case against Mr Ferguson is extremely, extremely weak, if perhaps non-existent," he said.
"It's based on suspicion, not evidence."
He told the court none of the phone calls intercepted by police contained evidence Wiggins had asked Ferguson to buy the motorbike and helmet.
"There's no evidence whatsoever that ... he had any knowledge as to what Mr Wiggins or anybody else intended to do with this bike and helmet," Mr Russoniello said.