2 of 3 customers found this review helpful.
I first switched to the SRAM PG-970 because it was the cheapest Shimano-compatible 9spd cassette I could find. Surprised when it arrived - it made the old Ultegra cassette look like something from Soviet-era Russian agricultural implements in comparison!
The SRAM is lighter, looks better, shifts better, and seems like it will wear forever. Just replaced the 11-23 with a 12-26 because I will be doing more long, steep hills and wanted lower gears, but with over 10,000 miles on the old one, it shows little sign of wear.
I actually wanted an 11-26 but couldn't find one, so disassembled the 12-26 and removed the 14, move the 13 and 12 up one position, and fitted the 11 from the old cassette and voila! Just what I wanted.
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