Upper pulley is always the same distance from the cogs for consistent shifting performance. As you shift, your cable drags dirt inside the housing which degrades performance. It's tough CNC'd aluminum body firmly supports the cable housing, eliminating kinks due to short frame stops, and attaches with a rock solid lock onto your frame. Conventional cable routing. Can be used with or without replaceable boot.
All pivots are o-ring sealed.
8-9 speed compatible. Red or Black Boot. The only fully sealed MTB derailleur available. Adjustable spring tension and a nylatron cable slide allow for incredibly smooth shifts. Its replaceable and interlocking rubber boot completely seals the entire parallelogram all the way back to the cable housing.