: Unlike Shimano’s 2:1 ratio, SRAM’s "one-to-one" system moved the derailleur exactly as much as the cable was pulled. This made the system significantly more "tolerant" of mud, grit, and cable stretch—a huge selling point for mountain bikers.
The SRAM 9.0 groupset is known for its exceptional performance and reliability. The groupset features a range of technologies, including: sram 9.0
You do not have to live entirely in the past. Here is a "restomod" approach: : Unlike Shimano’s 2:1 ratio, SRAM’s "one-to-one" system
: The 9.0 was often paired with 9.0 "Grip Shift" (twist shifters) that allowed riders to "trim" the front derailleur and dump gears rapidly under load. SRAM ESP 9.0 (1st style) derailleur - Disraeli Gears : Unlike Shimano’s 2:1 ratio