Box Three P9 X-Wide Single Shift E-Bike Groupset
Our Box Three tier delivers many of the same capabilities of its more famous siblings yet it's built upon a simpler platform. The cassette is E-bike Optimized at 12-50T, adding an extra tooth to each of the three highest gears. The derailleur exploits our Limited Slip clutch technology without the Tri-pack features. The action on the shifter is limited to one downshift per lever swing, although you'll forgo the hinged clamp and die-cast structure. And lastly, string it all together with a Prime 9 chain but without extravagant coatings. If you're looking to bring your 2/3 by bike into the 21st century, then level up with this group!
- Box Three Prime 9 Single Shift Shifter
- Box Three Prime 9 X-Wide Rear Derailleur
- Box Three Prime 9 12-50T E-Bike Cassette
- Box Three Prime 9 126 Link Chain Polished
Q: Can I install this on my bike that uses a b-link for my current derailleur?
A: Yes! All you need to do is remove your old derailleur and the b-link leaving the standard hanger attached to your bike frame. You can now mount your Box Components derailleur directly to the hanger on your frame.
Q: Can I install this on my bike that currently has a direct mount hanger?
A: Possibly, you will need to see if your frame manufacturer or a third party like wheelsMFG offers a standard mount hanger for your frame.
Q: Will Box be making cassettes compatible with XD or Microspline driver bodies?
A: At this time our cassettes are only compatible with HG style MTB 8/9/10 speed or road 11 speed driver bodies. Most hub manufacturers offer the different
Please see page 6 of our guide for notes regarding the 2 HG drivers.
Q: Can I use X crankset with Prime 9?
A: We recommend 1 by specific cranksets to achieve proper chainline and performance. The crankset you choose will depend on your bike frame and budget.
Q: Can I use my standard chainring with your Prime 9 drivetrain?
A: For the best performance and chain retention we recommend you use a narrow wide 11 speed chainring. This will best match the internal geometry of our chains and provide you with the best riding experience. These are some of the brands we recommend, Wolftooth Components, Raceface, One Up Components, Absolute Black.
Box Three ebike groupset
The components were easy to install and it works much better than the eight speed it replaced. Wear over the 600 miles it has been on the bike is minimal. It has required very little attention to keep shifting beautifully. Shifts are smooth, fast, quiet, and predictable. The only problem I had was getting the cable tension right, but that is something I always struggle with.
Want this to work so bad
As the previous review mentioned, sometimes when you want something to work so bad you see it through rose colored glass. Shifting - while its not as rough on my thumb as the previous review mentioned it is difficult. There is a webinar on the box 3 and you can see the difficulty the Product manager has with not pressing hard enough to shift as well as the extreme amounts of play. Chain tension. The clutch leaves much to be desired. Sending you bike off anything greater then 6 inches will cause the derailleur to shift. Chain slap is now a thing again :-( The main reason I bought this was due to only getting about 400 miles off my slx chain and cassette. Really hope I get at least 1000 out of this group set.
Sometimes you want to believe in something so much that you will look through rose colored glasses to cover up the truth. I wanted your system to work so much! First - shifting. While it does shift every time, its very hard to shift. It has an extremely long throw that would wear on my thumb after each ride. A shorter crisper throw would be wonderful. 2nd - derailleur. I was less than a month into riding before the derailleur broke in half. The last ride i had, i actually lost the bottom part. There is also absolutely no tension to hold the chain on. I had dropped chains multiple times on each ride. I shortened the chain to no avail. I finally installed an upper chain guide and it would still come off on the bottom. Third - install onto a 11speed hg road. I spent the first month tracking down the part needed (which is why i was out of warrantee when i finally got it installed) and it really never worked right. I recommend just including the part needed because no bike shop knows what you are talking about, it is extremely hard to get the part, and it really didnt even work once installed. You have a great concept, but it doesnt deliver.