A set of high quality TourMax carb to head rubbers to fit:

229537 Carb to Head Rubbers for Honda CBR1000 RR4, RR5 Fireblade 2004-2005 (set of 4)

These are also referred to as "Throttle Body Insulators".

Irregular engine running at idle is usually due to old, hardened or brittle intake manifold(s).

TourMax brand - made in Japan.

Professional installation by a qualified motorcycle mechanic is highly recommended to ensure correct fitment and safety.