Matt @ Tyga Performance will sell you a nice exhaust to fit on there
I used to have a 150R in Indonesia, fast enough for there. Maybe you could uograde to a 150 SP like the ones from Thailand. Are there any in Malaysia.
I think most guys on this site know 150's exist even if they have never had the oportunity to see or ride onehttp://www.dreamgate.ne.jp/nsr/specsother/nsr150sp.html
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If the rats eat my wiring one more time....