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!
- Our Best All-Rounder Drivetrain
- For Light / Medium Terrain
- E-Bike Optimized 12 Tooth Cassette
- Single Shift Per Swing for E-Bike Safe Shifting
- 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™
- Includes Box One Shift Cable & Housing Kit
- Compatible with most 10,11, & 12-speed wide / narrow chain rings. Prime 9 chain must be used.
- Gears: 12 - 14 - 16 - 18 - 22 - 28 - 34 - 42 - 50
- View Prime 9 Drivetrain Compatibility Manual
- View Prime 9 E-Bike Comparison Chart
- How is the Ebike variant different?
- Why Prime 9?
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.