lo on to
www.zx14r.co.uk for loads of info
I had one for 3 seasons, the basics:-
Early 06 / 07 models had really badly restricted low down power in 1st - 4th (think CG125) up to about 6,000 rpm, then the power comes in with a bang - truly horrible, can be fixed by removing secondary flies and remapping but allow £300 to do this if looking at an early model.
ABD optional on '07s but std '08 onwards (They also fixed the low down issue as evryone moaned about it and most owners worked around the restrictions anyway)
Bar risers help for comfort, as does taller screen (Genuine kwak one very good) and seat is rated excellent by some and crap by others (I had Tony Archer sort mine)
Front suspension ain't great, £250 for rework at MCT transforms the handling (don't get me wrong it ain't awful to begin with) and it feels 25kg lighter (more like a litre sportsbike) I know about 30 guys who have done this and they all rave about the handling post mods.
For two-up the rear shock will struggle, MCT can mod the OE unit for £100 ish (I think) I did this first then later fitted Ohlins. The moded shock was much better, but the remote pre-load of the Ohlins was a big bonus.
Givi V35's suit the bike well, but are a shade down on Vario capacity.
As sportsbikes go this is a good an all rounder as your likely to find Pillion comfort ain't bad but the seat is a bit thin, my Mrs was much happier post Tony Archer (an extra couple of inches of foam) - this mod also stopped her slipping into me and also gave us both a shade more leg-stretch.
Pre- Bar Risers I had a lot of wrist issues, but it was much better with risers, could still get a bit achy, especially at lower speeds (Alpine roads).
If you want a fast bike to tour on a well sorted ZZR is awesome, it is probably even better at shredding licences if you don't have a lot of restraint and anything less than 100mph feels positively slow so be careful.