Narrow Wide ChainringStainless Steel Narrow Wide Chainring 

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An issue many people ran into when they began using 1x setups was chain retention with the front chainring. In the beginning of the 1x movement, many companies dealt with this by u sing aftermarket chain keepers that somehow bolted to the frame.Many people discovered that using a narrow-wide chainring in conjunction with some type of 'clutch' rear derailleur helped abate or eliminate these chain-jumping issues.Narrow-wide rings use alternating tooth profiles that more positively engage the chain and help control a deflecting chain in bumpy conditions. Your friends at Surly have partnered with SRAM to bring you stainless steel X-Sync chainrings.Stainless Steel is durable. This durability is pretty useful when you're talking about the one ring that is bearing the brunt of all your miles. Show more