RX820/610 series: 12-speed shifting with two single chainring and two double chainring options with mechanical and Di2 variants
RX810 series: 11-speed Ultegra level (R8000 series equivalent) with mechanical and Di2 variants
RX600 series: 11-speed 105 level
RX400 series: 10-speed Tiagra level
Shimano GRX
Cassette: 10-, 11- or 12-speed
Largest sprocket: 51t
Shifting: Mechanical/electronic
Brakes: Hydraulic disc only
The GRX groupset’s rear derailleurs are also unique in accommodating very wide cassettes up to a maximum 11-51 for the 1×12-speed variant, although only up to 42 teeth for 1×11-speed.
cassette 10-46 Zipp 303 XPLR SW - Goodyear XPLR Slick Designed for Zipp, 40 mm Zadel en -pen: Prologo Nago R4 PAS / Merida Team SL, carbon Stuur en -pen: Merida Team SL GR1P Maten: XXS, XS, S, M, L, XL
