azhari, the 201 is a piece of cake. You undo one bolt and swing the caliper out to change the pads. The new pads should be supplied with a replacement bolt with the blue locking compound on it.

9 times out of 10 the wear sensors break, so buy a new set, they're cheap. Be careful how you fit these as it is easy to get them back to front, and this breaks the new ones!

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Cheers, Neil