I liked the brake/clutch levers shown in iblastoffs's OP so contacted Hitchcocks about them.
Dan's reply:-
These levers have been on Royal Enfield’s internal accessory system for many years now along with a number of other accessories. Unfortunately, they have never made it to market and I doubt we will ever see them produced by Royal Enfield (the latest bikes have changed lever design, so it is also more unlikely they would go back to offer an accessory like this for a none “current” setup).
Regards,
Dan
Maybe similar applies to other items marked 'new' in the NZ catalogue in the OP.