Yamaha RXZ has just been updated with new sticker design. This one is in black and orange which is good combination.
For more info, click here http://www.yamaha-motor.com.my/ProductRxz.aspx

Pictures above is in medium resolution, so, click to enlarge. I post these pictures here for all of us to enjoy and also my place to keep these pictures for easy access when I don’t bring my laptop to the bike shop (my phone can browse Internet).
I hope Mr. Pang will not be furious about me posting his catalog, and I think this is a good publicity for him.
YYPang racing parts has been used a lot in Yamaha Lagenda for Malaysian Cub Prix race. Some of the parts here are expensive, but quality is proven as Motul YYPang team has always been on the podium.
Exhaust pipe are the easiest performance upgrade we can do to our bike whether is Yamaha, Honda, Suzuki, Modenas, big bike or small bike. For 2-stroke bike, exhaust pipe is very important as it is very closely related to performance of the bike and that is very true if you look at the exhaust pipes YYPang has to offer for Yamaha Y125Z bike. It has 6 different pipes!
Different exhaust dimension will give different performance at different RPM. For stock exhaust pipe, the pipe is tuned for good overall performance with almost silent sound. But, if you look for the sprint test exhaust pipe, you can see it is shorter and the ‘belly’ or the chamber is slimmer. This is due to the fact that this exhaust need to perform very well and at its very best at highest RPM. Meaning that the performance of this sprint test exhaust is not good from low to mid RPM. In sprint test, who doesn’t hit the throttle to full carb opening and highest RPM?
Choose your exhaust wisely.

Wiseco is one of the high performance engine parts manufacturer for dirt bike. I have stumble upon this great online shop here with sells a lot of dirt bike parts.
This is good because many parts from the dirt bike Yamaha YZ125 can be fitted to Yamaha 125Z. One of the common part that is fitted to 125Z is the piston and connecting rod from the YZ125. Parts from YZ 125 are considered tough and long lasting as it is used in extreme condition that is in dirt bike racing.
Using the piston and conrod from the YZ125 are also said to increase the compression of the 125Z go higher than stock RPM, just make sure your CDI is not RPM-limited.
The parts here are not cheap though. It cost about USD150 (MYR510) just for the piston.
Anyway, from the reviews that I have read, many customers are satisfied with it. It increase the top end of the customers bike.
What’s your view about? Buy it and then you know it.
More info? Get to http://www.motosport.com/dirtbike/product/WISECO-PROLITE-PISTON-KIT-2STROKE/?prodId=1227763&bMMY=YAMAHA;YZ125;1988

Many parts are available here for you to choose. I personally like the chrome roller chain and chrome sprocket. I might buy a set soon.