RS 457 2026 vs RC390 2024

If straight-line speed is your priority, the RS 457 takes the lead. With 5 HP more than the RC390, it offers a more spirited ride that will be noticeable on highway overtakes or track days. Both bikes share a similar footprint on the scale, with only a negligible 3kg difference between them, so handling characteristics will depend more on center-of-gravity than raw weight. Riders with a shorter inseam should lean towards the RS 457. Its seat height is 24mm lower than the RC390, making it much easier to flat-foot at stoplights and increasing confidence during stops. Bottom Line: It's a close call. Choose the rs457 if you prefer its specific styling and ergonomics, or the rc390 if you want the alternative brand character.