I've got a set of Dymags on my bike , the difference is amazing! It's not just me that thinks so, friends with standard wheels can't believe the change in handling and flicability.
You notice the difference more on the track.
SpikeHammmers R1:
Tony Scott motor
Ken Summerton forks
Dymags
PFM discs and calipers
Scotts damper
Ohlins shock
520 chain conversion
JMV undertail
Techtronics quickshifter
Promach rearsets
Ixil Hi-level pipe
Akra headers
HPS mushrooms
Goodridge Hoses
Performance Friction brake pads
AP Lockheed Adjustable Ratio Master Cylinder
Pace Products Radiator
Baffled tank
DMS battery
NRC engine casings
Samco Engine hoses