FSA Pro Road Chainring 130mm BCD
Pro Road Chainrings from FSA are high quality, smooth shifting and are a great replacement option when you ve racked up enough miles to send your current chainrings on permanent vacation to the recycling bin.
FSA Pro Chainrings are machined from 7075 heat treated aluminum and are compatible with any crankset that has a 130mm bolt circle diameter. FSA Pro Rings are optimized for 10 speed but will work with 9 speed drive trains.
I used the 39t for my middle ring when I upgraded my triple/8-speed drivetrain. I've had it on for a few months and it works very well with no complaints whatsoever. Shifting is always smooth between big to middle to small rings, and I can use the whole cassette top to bottom while on this middle ring.