Jumpy, unpredictable shifts can be caused by a number of things, but often times one we don't think of is the sleek layer of lubrication between our cables and housing. Shimano is eager to help solve the problem with its SIS SP41 Shift Cable Grease. This...
Though the Shimano's Dura-Ace R9100 groupset is a marked departure from its predecessor, the R9000, the accompanying Dura-Ace R9100 OT-SP41 Polymer-Coated Derailleur Cable Set is largely unchanged: The stainless cables are still polymer-coated and the...
Slow shifting is a bummer, and there are lots of reasons for it, but if you've eliminated derailleur problems, cassette issues, and general grime as the culprits, it might be time to replace your shift cables and housing with Shimano's Dura-Ace OT-SP41...