How to "upgrade" LC engine ?

My LC not new, 5 years already

Feel like change to Y15, but if can upgrade it to same level then no need change

I changed the rear tire on my LC today to Michelin 90/80 17 pilot moto gp. Wanted to put the old rear tire (stock 80/90 17)  to the front wheel but the mechanic was against the idea cause he said LC stock front rim is slightly less wider than the back's and adviced sticking with 70/90 17 profile tire. Any second opinion on this?

new head. finally repair kao tim

coverset made by HLD quality ok if compared to HLY? anyone using HLD made coverset can give review? I am thinking of getting this coverset but not sure about the quality
ES (clutch) Black

What are the best tire for daily usage for y15zr? Corsa r26 platinum is good? Any user corsa can give feedback. Appreciate it

raining day ok ar?

Suggestion 4 Y15ZR.
Gear box 6 speed R15.

Plan to upgrade :
Blok UMA 62 / 63 mm
TB standard / UMA 32 mm
Cam standard / UMA R1
Exhaust UMA cutting standard 28mm
Injector standard / UMA 160cc
ECU TuneBoss
Air filter K&N.

Con rod standard / need to change?
Valve spring standard / racing type?
Sprocket not sure for daily use

Which 1 is compatible?

Hi guys, y15zr owner here..want to ask one thing..why is that my bike's engine vibrates so much and when u throttled up to 5.5k-6k rpm it will produce very loud friction noise..not below or above that range..pretty weird i'd say..like knocking metal noise..dunno how to describe..
My bike lost acceleration power, gear ratio feels like very short..

What is the normal rpm when u cruise at 100kmh? My bike is at 7-8k..is it normal..didnt date to go more than 100kmh..because bike sound so lound..mengeram...

I didn't have this issue before and my bike is standard one..no mods

Mileage 16k, never do valve clearance before..should i? Sorry, noob here..

assalam n good day to all pro/idola/bos/sifu.
sy nk mtk suggestion/advice. hopefully ade yg sudi menolong.☺
problm my tenggiling(y15) is my top speed blm memuaskan hati n need guide to improve the top speed.

FYI, my spec is:-

-c/block spec 65mm
-s/head 22/25 with porting sesedap rase tp blm bt CR
-camshaft t3
-tb kawahara 34mm with injector 180cc
-clucth standard tp (tukar spring  racing)
-exhaust yy pang cut stad 32mm
-sproket size 14/35(before this use 15/35 but 5th gear rpm drop n try chge frnt srkt to 14,  the result is my 5th gear can merayap but just can reach to 10k rpm. feel like no power to get more like others gear)
-ecu api
-rim sukan 125z(bunga lawang)

in my future plan is  nk buat CR @ besarkan size monifold exh to 35/36. tp nk tanya pd pro/sifu, both of my plan which  1 should  to do. or  do the both? or any other suggestion/advice.?

TQ IN ADVANCE..☺

additional info:
- my current top speed is 150km/h(bike meter)@10k rpm/5th gear (diff with the other gears can reach to 13k rpm). 0-150km/h is very fast..
already try dyno but the result still same n ddn't get any sggst frm tuner. but dyno meter already reach at 195km/h( not sure for my meter coz just stand o/side from the room.

Hi guys, sorry to deviate to a non-technical question.

I scouted an offer from auction,  a year 2017 registered 135LC going for RM3100.

Is this a worthy buy?. or best to steer away from auction site?

Noob question here. How u guys lc135 & y15 users bring your raincoat when riding your bike? I know that those who installed givibox have no problem to bring raincoat & other stuff, but how about for those who dont have one, or will never install one?

Put in the bakul perhaps? but then your bakul will be full by the raincoat itself, cannot put other things like groceries..

I'm interested to get lc135 but a bit worried about this tiny issue especially during this rainy season.. I'm so used to having underseat compartment like honda wave kapcai, which easily u can put your raincoat though..  

tuhlah macam² pulak jadinya xsampai 6 bulan pon lagi kawan aku guna lc modi dia ni, modi pon guna parts original yamaha sendiri kecuali cam je dia guna high cam brand ape entah tapi dia buat ngan pomen kat kedai lain. cuma dia berpegang pada prinsip, ‘dah bayar mahal² utk modi, parts pon ori yamaha, xkan nak bawak slow² pulak’ so, memang kerja dia ‘merembat’ je time gi/ balik kerja

in my case pulak maybe sebab punca 2 orang yg buat. asalnya deal ngan sorang pomen je tapi pada hari yg dijanjikan, pomen yg nak buat tuh lewat 3 jam dan dia suh another pomen buatkan dulu, then baru dia sampai dan sambung. sejak drpd harituh, kalau saya dtg utk fine tune carb./ tukar minyak hitam utk check OK x lepas modi etc memang kadang² another pomen ni buatkan dan kerja dia xkemas sgt la cth screws coverset mmg akan xcukup pasang, kalau pasang pon longgar, ada 1 ‘stopper’ dekat tuil gear pon dia lupa pasang nasib baik perasan skrg another pomen tuh dah xde kat kedai tuh, so pomen yg deal asal tuh yg buatkan balik, so far so good

Ulysse Speedometer GPS tu accurate ke

My LC now is on 17k KM, may i know when should i change the coolant? Bike has been used about 1 year and 4 months already.

anybody can share recipe 62mm bore up mods?

Hi guys, do you have any recommended tyre for LC135. There are so many tyre brand in market right now; pirelli, maxxis, michelin, corsa, etc. Do you guys have specific brand to stick with for basic daily use like to go work and going back hometown in weekend (around 70km)

Anyone know where to get sp522 sportrim online.

have you personally bought from them? if so, where do you bought from? their website or instagram /fb.