CBR 150 / 125 Piston - Motorcycle Thailand

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Re: CBR 150 / 125 Piston

By: glewy (offline) Friday, 02 October 2009 @ 02:18 PM ICT (Read 4242 times)

Hi,

I hope someone can help.

I live in the UK and have a CBR150 that has been fitted with a smaller piston and barrel so that it is now 125cc and therefore legal here. I bought it new in 2005 and didn't realise that it was a modified CBR150 as the dealer didn't mention it at the time! The importer has gone bust. It appears that this is how it was imported.

My problem is that I need a new piston and I don't know where to get it from. The UK spec CBR125 only has 2 valves so that doesn't fit. I have no idea what engine the piston fitted to this bike originally came from. The piston size is 58mm x 37.5mm and the piston pin is 15mm diameter. Obviously also it has cut-outs for 4 valves. The piston stroke is 47.2mm.

If anyone has any ideas , I would be most grateful.

Kind regards
Gareth