Police are making a further appeal for witnesses following the fatal collision in Booth Lane in Middlewich on Saturday 2 March 2013.
PC Paul Burke said: "I am particularly keen to speak to the driver and occupants of a small hatchback car, which is a light silver-blue colour.
The car is similar to a Ford Ka or Peugeot 106 and was travelling from Sandbach towards Middlewich at the time of the collision.
"They may have valuable information that may help us with our enquiries so I would urge them to contact me."
At 12.12pm a white Ford Transit minibus had been travelling along the A533 Booth Lane towards Sandbach and turned right into a private drive when it was in collision with a green Kawasaki ZX 400 motorbike which was travelling in the opposite direction.
The motorbike was then in collision with a black Volkswagen Golf which had been travelling behind the minibus.
The motorcycyclist, Peter Wrench (19) from Middlewich, received critical head injuries. He was taken to North Staffordshire Hospital but sadly died the following day.
Anyone with information should contact PC Paul Burke on 101 quoting incident number 445 2 March 2013.