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Hello i am from greece and i would like to ask i want to make a modificatio to my engine 65mm cylinder and piston set and an aftermarket cylinder head.I am between uma and rextor.r which is most reliable and which have better performance.Thanks for readind and i am waititng for your answers.


New Member
Hi, as to my understanding. Both is high performances block, so the wear and tear is due to high performance. Which is better? Is depending on the size your looking at...