Hiya mate!! See the list of my mods under my signature, these have made the bike 100 times more fun AND more fuel efficient too despite the fact that I ride it far harder than before. The Leo Vince cans are the only expensive part and you can always buy these later when you have saved up some dosh, they certainly make it breathe better and take about 3kgs off but are not 100% essential. Have fun!!!

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(Now sold on, sob) 2011 Blue XT660X with gold wheels, was 26,500 km.
Engine mods: K&N Stage 1 filter, DNA Stage 2 filter, snorkel removed, Kev fuel mod fitted.
Plus: smoked Puig screen, Yam aluminium sump guard, Yamaha / Acerbis handguards, Givi Trekker aluminium side cases, Leo Vince X3 cans plus Kev front fork mod and Fender Xtender. Just fitted Michelin Road Pilot 3 tyres.

SOLD the XTX for a Super Ten 1200. And just bought a Raptor 700 so staying on here for some tips....