ye, just got replaced under warrenty.

GRS is working on compressed gas? where do this oil come from?

GRS is working on GAS,not Oil.

Whats that ??

He was worried about oil spill around his rear shockers. He was xpecting it to come out from GRS thing. Thats why ..

Update : last time i filled 300 rs fuel 2.8 lts on almost empty condition,below E mark. Today again i filled it at exactly same point (almost) and my tripmeter showing 145 kms. so this time it mileage seems to be around 50. Actually i had more of a highway ride than city.
Wil check it again this time same method,not very accurate but still..

Even in GAS shock absorbers the primary dampner is oil. Here goes the link.

XCD 135 Blog: XCD 135 DTS-Si gets Nitrox Shock Absorbers

Still no reply to my post no : #4030 .

Called bike zone today they are saying no use changing just the piston rings - you have to change the bore+piston+ring - only then they say it will work the total cost they say will come to Rs2600 . I cant trust the service center mech..... i had a bad exp. with bike zsone earlier so i dont know if they are indeed telling the truth . I just want the bike to be like before .

Yes , ordinary shock absorbers have oil and air . In GRS the air is replaced with some other gas . But both use oil as the primary dampening media .

A bore+piston+ring replacement suggested so soon !

You had mentioned that, the intake valve had thick carbon deposits over it. Same should be the case with your piston as well then?

I had a similar experience with my Splendor when it completed around 30k on odo(Now the odo reading is d 1,10,000 !), the bike wouldn't get started itself(not enough compression) and after some kicks it will get started. Took it to service center, where they de-carbonized it, it had thick carbon deposits on valves, which was the primary reason for loss of compression, and on piston.

Though you have replaced valves, still check if your bike needs to be de-carbonized...?

i change gears in 4k rpm. In normal drive my speed is below 55kmph. I am checking my Tyre pressure once in every 5 days.
the problem is now i cant throttle above 68kmph. I can feel the hard stress in the engine at that speed.

Yesterday i rode pulsar 135 with my friend from trivandrum to kottayam Mg university. 170km one side so total 340kms.

This happened to me when i was running LEAN, hot engine,decreased pickup/topspeed.

guys, need help regarding installing the Indicator buzzer. I bought it but not sure where to connect it. anybody help !!

Not by the SC but by castrol bike zone guys ...that too over phone .


Top of the piston was black the mech scrapped it off with a screw driver .

The first time my bike lost compression they reseat the valves which the mech told me was full of carbon. In just 5000Kms after that the bike again lost compression this time he told me to change the valves....still the pressure is not up to the mark when i kick start the bike though the bike starts if i use the kick start method just fine.when i asked why i am not getting the compression like before he told me the rings are weak thats why i am not feeling that much pressure on the kick...i dont know if what he says is true or not .

decarbonize? i think it means removing the carbon right ? do they open the whole engine to remove all the carbon ? . I see you are from chennai only can you point me to any good Hero SC in chennai that will do a good job .

@ATHUL4R- Yes you are running lean and contrary to popular believe neither a lean mixture gives more mileage nor a rich mixture gives more power. A bike delivers maximum mileage when it makes the most power and power loss is negligible. So get th tuning correct. Even you can adjust the tuning yourself. No need on relying on mechanics.
First locate the air screw on the left side of carb and tighten it fully and lightly without applying too much force. Next increase the idling by turning the idling screw so that the engine idles at 2000 rpm.
Now open the air screw slowly by 1/10 th of a turn and see that the tuning will rise. Keep on opening and watch the tachometer till the idling will be at highest. Now slightly turn the air screw left or right and you will see that the rpm will decrease. It is at this point that the mixture is perfect. Because at this point the engine makes maximum power. Now decrease the idle to about 1000-1200 rpm and see that the engine will rev freely.
But before this ensure that the airfilter is clean and your carburettor is clean. Clean your main jet as it may be dirty or there will be some water in float chamber. Then attempt to tune after the engine is warm.
@sarbanoxley- most probably your mechanic is correct and change the bore piston as complete set. Remember the cylinder is same as unicorn and in some batches of unicorn the engine lost compression at 50k kms.
Even my mechanic replaced a bore piston on a unicorn at 50k km and the same unicorn had changed the bore piston 7 days prior at svc but it seized and svc didn't take any claim. So he changed it at my mechanic and is trouble free since then. If your extreme is from same batch then most probably your will have the same problem. By the way what is your odo meter reading. If anywhere near 40-50k then change the block and the new block are coming with much better pistons and rings.

First thanks for replying .I have completed nearly 40K but the bike first lost compression at 32000 KMs(valve reseat done ) the second time at 40K (new valves) - so the castrol bike zone guy was right after all - are the new blocks better in unicorn or Xtreme mate ? if it was the former can i use the bore+block+piston of uni in my Xtreme ?

And yeah the SVC you cant even go and see what the hell they are doing with your ride- so no way of knowing if they are doing a shoddy work - its risky - i dont know any good mechanics in chennai either -anyone know any good fellow who can do a good job in chennai .

Remove the seat and pop the relay, connect two wires of buzzer to relay legs and connect back the relay, turn on the indicator, if it does its job and well and done, else swap wires and you're good to go.