MR30 TSR 1x ChainringsDescription TSR (Tall Short Ring) 1X chainrings are designed to work with all modern 10 11 12 speed 1X drivetrain systems. The tall short tooth profile helps prevent the chain from falling off the ring when riding through rough terrain and is a must on 1x drivetrains but is also compatible with singlespeed drivetrains. Made in the White Industries shop from U. S. sourced 7075 T6 aluminum (48 tooth ring is 6061 T6). Features MR30 series TSR chainrings
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