- Works ONLY with Shimano 12 speed CN-M9100, 8100 & 7100 chains
- Oval rings help the rider to spin smoother and more efficiently
- Example: 32t is equivalent to 30t at dead spot and 34t at the power zone
- Fits Race Face cranks with the Cinch system and provides 3mm offset for Boost spaced bikes
- Narrow-wide tooth profile keeps the chain snug, allowing you to leave the chain guide behind
- Designed in UK, manufactured in Poland
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