Top Speeds from Performance Bikes Magazine in the UK for the 600's were all around 161. something. I believe the ZX-6R was 161.4 if memory serves me correctly, only bike in that test that did not break into the 160's was Honda, high 150's was all it would pull.
Mike
99 R6 Street - Sold
00 R6 Track
03 KTM 200SX
03 ZX-6R Street
Mike
99 R6 Street - Sold
00 R6 Track
03 KTM 200SX
03 ZX-6R Street