31t®um most risers are 25.4, like drops, and bullhorns so you might wanna get a similar stem edit i like my risers....
You can very easily shim out that 0.6mm with 0.3mm of beer can or similar shim material.
@tynan started
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You can very easily shim out that 0.6mm with 0.3mm of beer can or similar shim material.