Box Three 1x9 Prime 9 Multi-Shift Cycling Groupset Mountain Bike - Matte Black, 9 Speed 1x Drivetrain Shifter, Rear Derailleur, Freehub Bike Cassette, Chain | Box Components

This worked great. I put it on my entry level Fuji Nevada 1.9 and it has really changed how the bike performs especially going uphill. Shift can be a little stiff, but as long as its installed and adjusted right it seems to hit its mark every time. Instructional video for install could use some work, there are times the really bad background music overwhelms what is being said so you have to guess or find other peoples video. Good product for the money.

I would of given 5 stars if the slipper clutch was disengageable it makes taking the rear wheel off a pain sometimes other than that it has been a fantastic derailer for the price point perfect if you're updating a older bike or going 1x for the first time

This drive train has a great range and it makes me feel like I can ride up a cliff face! 9 IS FINE!

Excellent products recommend by a high end mechanic and racer… Holding up well after hard use!

Swapped out the stock 7 speed factory crap and put a breath of life into my bike. Can climb better and has a higher top speed no. This groupset has a great range! Haven't had one dropped chain since I've swapped!