These are both great, but different bikes. The RC51 was built specifically to compete in World Superbike. As a V-twin, they were allowed to go up to 1000cc to compete against the other manufacturer’s 750 4-cyclinder machines. This bike was the basis for Colin Edwards’ World Superbike Championship in 2000. It was also the championship-winning bike in 2002. In the US, Nicky Hayden won the AMA Superbike Championship in 2002 on a Honda RC51. So, this bike has some good genes.
photo from NICKY HAYDEN raccolta foto thread – Pagina 3 – DaiDeGas Forum
The other bike is a 1999 Honda 900RR. This was actually about the 4th generation for this inline four series, at 919cc, before the displacement was bumped to 929, then 954. Known also as the Fireblade in Europe, the Honda 900RR was a great sales success.
Looks nice in yellow:
Both bikes look nice, although the seller does not give many details. I’d go with the RC51. I haven’t been looking, but that sounds like a pretty decent price…
Find this pair for sale in Atlanta, Georgia here on Craigslist – the RC51 is $4,600, the CBR is $4,200.