Box One Prime 9 Shifter
The Box One multi shifter is the only shifter on the market that comes factory stock with a hinged (and machined) clamp. It's top of the line and comes packed with other features such as a durable cast aluminum pull lever and top shell. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up. Available as a multi-shift (pull several gears at once) or single-shift shifter (a sound choice for e-bikes).
A good shifter
The shifter has a little bit of play in it, similar to that of a SRAM NX shifter. I have about 1000 miles on it now and it still works perfect.
Amazing, my favorite shifter so far. The box one prime 9 derailer however doesn't fit my bike as good as the my Shimano deore xt 10 speed derailer. the shifters do seem to require more power to push compaired to other shifters making it harder to shift more gears than wanted at one time, I like this ALOT. Other shifters seem easier to pull and I end up shifting to many gears at one time. I do like having multishift options but everyone knows you don't always need to shift 2-4 gears down Everytime. My only complaint: the shifter is great no problems at all. The derailer... Sticks out to the side further than others, 9th gear always has a loose cable and the b screw placement could have been a little better in my opinion. Now keep in mind my box one prime 9 derailer is on a 18 year old bike (Banshee Scream) which also has a strange derailer hanger. Compaired to Shimano derailers it was definitely eaiser to install. The added links in the newer Shimano derailers required me to actually shave down where the b screw sits to even fit it on my bike, with the box I didn't have any of that.
Box 1 Shifter
Works perfect, never had an issue
Crisp engagement, good ratios, ONE complaint
Box One, Prime 9 shifter/Derailleur combo. Quality construction, seemingly appropriate ratios, reliable shifts... Once the shifter engages. Guesstimating 20°+ of lever throw before engagement. I've already thrown a gear at this point on lesser quality kit from competitors. Please tell me there's a fix for this.
Not what I hoped
I’ve had this shifter matched with the box one derailer for about a month now. The shifting is very heavy and the lever to shift up goes through a huge amount of throw before engaging (enough to shift two gears on other brands of shifter). I have been able to get it to multi shift on the stand, but with the combination of these two issues I can’t say the same for on the trail. I got this whole drive train because I wanted the easy of use that Box claimed, since I put it on my bike I’ve spent mor time trying to tune the shifting or riding with bad shifting than ever.