Try this! Not sure if they'd be willing to send just stickers however I did manage to get a blue and white one a few years back which is highly reflective and still there doing its job.
Several post regarding reflective tape especially about not putting white on the rear end - any sign maker will cut you some in either reflective or day light colours. Then its just a Blue Peter job...
Obviously watch what goes on the lid as it may affect safety properties and any warranty.
hi redstan hear aka badger can you please give me the cost of a set of stikers for helmet and tank .silver gs so red end wil do. i sean to be having a lot of trouble in geting on to your web site thanke from a old york,s gray beard