The 42 tooth (42t) EX Cogs WILL NOT work with 34 tooth (max) cassettes. A 6 tooth jump is the maximum for excellent shift performance.
Can I use the 42 tooth (42t) EX Cog with a 34 tooth cassette?
The 42 tooth (42t) EX Cogs WILL NOT work with 34 tooth (max) cassettes. A 6 tooth jump is the maximum for excellent shift performance.