Customer Reviews

reviewed by:
renshoNice design and easy to install and use. The cage is too narrow to work for any 9sp drivetrain. You'll need to add spacers to widen the cage, unless you're running SS.

reviewed by:
moemetzgerEasy to install..Fairly good instructions..the chain has not came off since I installed it..

reviewed by:
treetopEasy to install and does its job well.

reviewed by:
ParadigmDawgWorks great, easy to install and zero dropped chains.
I run it as a 1x9.

reviewed by:
GeezbikeIf you are running 1x9 make sure you put spacers in between the two pieces to widen it. Or else it will rub at both ends (11 tooth and 34 tooth). With spacers, still rubs slightly. Have the e-thirteen for other bike and no rubbing. But this is still a great part and costs less than competitors.

reviewed by:
phattireYet to drop a chain, easy to install. Put more mojo in my MOJO!

reviewed by:
A GuestPerfect addition to my 1x9 converstion. Nice quality and easy install. Construction makes for a nice quiet ride with no rub.

reviewed by:
sortitusLike most of the others here, I converted bikes to 1x9 with this product. It works great, but is a pain to adjust the angle from the BB or spacing beyond what's available with the included washers. You'll have to remove your cranks and BB to make any adjustments, and it's difficult to gauge alignment before tightening.
I'm running one with old Sugino cranks on a mountain frame, and one with Ultegra on a road frame. Both have clearance problems, but the Sugino squeaks by with a millimeter of clearance. I had to sand down the raised lettering and use BB spacers to prevent rubbing on the Ultegras, so just be careful if you're using road cranks.
If you're having the rubbing problem on any speed of bicycle, try rotating the unit as far forward as you can without the chain rubbing on the bottom post (you may have to drop the level as well). The front section can run extremely close to the chain since there should be no variation in chainring diameter or side to side alignment of the chain that far up.