hi mate,you may be able to fit yourself if u no what your doing but iv read about them and it says for insurance purpose they need to be fitted proffesionally,should be easy enough to get done at most bike shops,it is the s4 red thatcham category 1 alarm which will reduce ur insurance when fitted and blive me when it goes off it will stop anyone trying to take it..loli have the reciept from when it was fitted u could give them a ring just to get an idea of the price to have it fitted the number is 01302327722,the lowest price iv found on ebay is 130 plus postage but ill be willing to just let it go cheaper,if u want u can have a think and make me an offer,if u decide u dont want it ill chuck it on ebay but u have first refusal,cheers kev