That’s a longer fork rake angle on high speed flyers to give you that straight line stability. Twisty bikes have that angle set lower.
I think it had more to do with the gyroscopic effect of the big 1000cc V-twin engine because the RC51 was built by Honda to take on the Ducati 996 in the Superbike World Championship. It’s definitely a bike for the twisties. It’s a crotch rocket. I just don’t have the skills for a racing machine like that, especially at license-revoking, bike-impounding speeds.
Now my Harley FXSTC, that has a rake! I drive that sucker, not so much ride it. It’s the worst handling motorcycle I’ve ever owned, but still my favorite bike. The RC51 was fantastic for about 30 minutes, and then the riding position that felt like you’re taking a dump in the woods and the ball cooking heat from the rear cylinder being practically in your crotch takes its toll. I took the Harley from NYC to New Orleans to Las Vegas and back to NYC and that’s where that type of bike shines. Long wheelbase, big rake, fat seat, soft suspension, and that sound!!! It’s my favorite.