Hi guys im stripping down the air box of my newly aquired Storm only to find that the bikes been used so little (w reg 7,000 miles) that the air filter has got a lovley layer of green mould growing on it!

not a problem as im replacing it any way with either K&N or maybe Piper Cross. Do have a couple of questions though 1st what does all the "plumbing" under the air fitler do

and also the 2 small sponge inserts that sit in either corner of the lower half of the air box have perished and turned too the consistancy of victoria sponge cake! Now iv seen with the replacement K&N kit 2 replacement parts are supplied but what do they do/ what is there purpose

Much abliged for any info and keep up the great work
