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Just wondering cos im in the process of purchasing a scorpion de-cat pipe for my valver but the lad selling it had it on his williams, hence pointless buying it if it doesnt fit so will a williams exhaust/cat the same bore as a valvers??
errr...rear end should be the same, but the link to the cat is probably different. IE dont even think about buying a Williams cat/decat for a valver unless you like cutting, turning and welding the flange at one end.