Our Box Three tier delivers many of the same capabilities of its more famous siblings yet it's built upon a simpler platform. Cassettes are accessible at 11-46T or 11-50T and fashioned with steel spiders. The derailleur exploits our Limited Slip clutch technology without the Tri-pack features. Shift easily with a comparable mechanism, 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!
- Our Best All-Rounder Drivetrain
- For Light / Medium Terrain
- Install at Home with Some Simple Bike Tools and Our Easy to Follow Video
- Limited Slip Clutch™
- Ultra-Wide Ratio with Consistent Progression
- Compatible with Traditional Derailleur Hangers (Non Direct-Mount)
- Cassette Compatible with HG Freehub Bodies
- Prime 9 Technology™
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.
Yes. All Box Three Shifters come with a stainless steel shift cable.
To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.
No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.
No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.
No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.
No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.
We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.
Please see our installation video at https://boxcomponents.com/collections/support
No this will only work with a HG splined Shimano 9-10-11 speed freehub body.
No, The Box Three Prime 9 Cassette is optimized for Box Prime 9 drivetrains and running other component variations can result in poor performance.
We suggest removing the cassette from the wheel and using a soft bristle brush with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.
Yes, All Box prime 9 chains have standard external geometry that will work with most existing 9 speed drivetrains.
No, Box Prime 9 chains are compatible with most 11-speed wide narrow chainrings but there are some chainrings that can result in poor performance. We recommend the following 11 speed wide/narrow chainrings for best performance, Wolftooth Components, Raceface, One Up Components, Absolute Black.
We suggest removing the chain from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.
I ended up getting this groupset because there was so much was out of stock on other brands, and thank goodness everything else was out of stock , for such a inexpensive set it has worked all summer with out any issues . crisp shifts very easy setup and no issues even with the abuse i put my gear through. we ride single track that is very techie and some fast down hill at a bike park near us . worked great for eveything i needed ....... no more looking at another brand im coming back to box for my next groupset !
It was an amazing product my one critic is it feels like it needs to be tuned a lot but other then that I would say 5 stars.
Box 3 prime 9
Great experience. Fast shipping. Quality components.
i ordered this for my mountain bike hybrid. i just ride streets now. i will have to say this set shifts very smooth,looks and feels bombproof made me forget all about the shimano i had on there. shopping experience and shipping was great. will buy more products and will recommend. Doug
All systems are go!
Amazed to find order and receive this box3 prime group set in such a short time. CS got back to me in a timely manner regarding a fit question and I was off to the races. Used this on a kids 24” Transition ripcord for my oldest son. It was running a older narrow range 9 speed. Set up was easy overall. On his first day out with it he biked an extra hour and over 4 more miles than normal on more technical terrain than he had ever done. The shifting seems flawless. The levers are a bit stiffer than the original sram but it did not seem to slow him down or frustrate him at all. Super excited to see if the durability promise holds true as I have another little ripper behind him to have this Last through if possible. At this point full 5 stars on everything! If they were in stock I’d consider a box 1 for my own hard tail for sure. Don’t be scared it’s not an S brand. This seems fully legit .