I bought this Carrera Kraken at a recent Halford's sale and fitted a Oxydrive CST kit. Fitting the kit was,nt to difficult. The wheel accepted the disc and cassette well and with a little shimming fits well. The chainset that came with the bike (a Suntour) did,nt leave enough room for the pas sensor so I fitted an old LX chainset that I had lying around. this chainset is a lot lighter than the Suntour steel one and has a 32/42 chainring so giving me a nice 18 speed set up.I made a few changes with a marathon plus mtb rear which hopefully will keep the punctures at bay.A higher stem,my old Brooks B17 and a carrier with daybag brings the weight to around 21kgs.I have been getting over 30 miles on day rides which for my 100+kgs is fine for the kind of trips into the hills I have been doing.