Usually all the SBK's get lifetime part supply for the bike i.e generally companies stock it 15 years-20years from date of production so its easier to order online or if not it can even be custom made but at a cost!
But in lower market segment its difficult to keep stock of outdated parts or still keep manufacturing since production rate is less and selling is very rare, it end up in loss for company. Suzuki is intelligent in cutting costs by limiting the supply of spares to required rate, and even don't let more than 6 authorised service centers in one city! Absolutely Amusing considering Yamaha, yet another japanese company, even today manufactures original spares for bikes as old as 1980.

couldn't help but notice you are saying that lower segment sale is less.

actually here in lower segments there is so much parts sharing among the siblings,that spares are found easily.

e.g pulsar,rtr,hmc siblings.

That's not a lame reason at all, if you consider that most of my vehicles have crossed the six figure marks. I am not even consider engine parts here. I am talking of parts which wear off easily like cables, brake liners, filters etc.

I am a DIY type and don't want to take my bike to the showroom every month for routine things.

To each his own, I rest my case. The poor thread starter has no clue where his thread is going.

but the thread starter is not.

Hmmm. True sayank, thats in your view point but then all the siblings will slowly change hands too right, like after 15yr we really wouldn't be having any bikes or sibling using really old outdated parts. What you are saying is like FZ uses parts from RX100. Which isnt true, but yes, SZ,FZ,fazer all share same parts and maybe until 2020 we wont have difficulty sourcing these parts for our bike.

So what i actually meant here was that on a sports bike, cost is iterative, so if it costs 60000rs to get a silencer then they'll have to spend it.

But for a lower segment bike , like say the pulsar 2002 model, in another 3-4yr it will be difficult to find the gun silencers and do you think its viable to manufacture very few spares and keep stock, considering cost of production and less quantity demand for it, the pricing will have to be high and if you tell ppl it has to come from a warehouse somewhere in calcutta or chennai, ppl will rather tend to go buy a secondhand than a new one as its cheaper and he wont have to wait. That's what I am saying here.

Dude, I have a doubt here, the Caliber was a Kawasaki bike right?
And kawasaki's provide assured parts backing, which is why you could find the part easily also considering there were lakhs of bikes sold, and it was just 10yr or so back, its really not difficult getting it.
But I cant tell the same with pulsar, a friend sold his 2003 bike for scrap as it was too costly to overhaul it.

That was because Bajaj Platina and Kawasaki Bajaj Caliber (I know this because I had a Caliber) shared most commonly required spares. Your friend probably sold his P150 because he was bored of it. Pulsars being expensive to overhaul is a myth.

i haven't said anything like that.rx was a generation old of fz.
and other thing pulsar overhauling doesn't cost that much.

True, i do agree overhaul of any bike will be cheaper than buying new one, i guess he was fed up of the bike and wanted a new one, guess what, he got yet another pulsar

yeah he was probably fed up with his pulsar for not having the new gizmos the new pulsar has to offer.