Colin said:The Engine Mounts can be checked that may make a slight difference (the rear ones have a habit of breaking)
The handlebar grips can be replaced, see Murph
Bar end weights can be added, again see Murph
Replace the rods and pistons with ZX10B/ZRX11 combo. (See me LoL)
mdr said:- Aren't the engine mounts that break the fronts? They get (got?) over torqued when a shim wasn't installed in the front left one, if needed. The rear ones, from what I've heard over the years anyway, will corrode and break or break from a REALLY hard bump.