Tips: Change Valve Spring to increase rpm and speed

Hi guys



today i just had a new valvespring installed.

im planning to install it myself but since i dont have the necessary

tools like valvespring compressor, they i decided to install it through

a yamaha service center.





why did i decided to change valve spring?

based from my experience, our stock t135 valve spring can only

run upto 10,000rpm. beyond that it will have a valve float.

if you have a stock cdi, you wont reach 10,000rpm because

the stock cdi limits its rpm to 9200...



Tips: Change Valve Spring to increase rpm and speed



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