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🚴‍♀️ Gear up, shift fast, and leave the pack behind!
The Box Three Prime 9 Groupset is a complete 9-speed 1x drivetrain solution designed for non e-bikes and single shift e-bikes. Featuring a multi-shift shifter with stainless steel braided cable, an ultra-wide 11-50T cassette, a lightweight yet durable rear derailleur with limited slip clutch, and a polished, treated chain, this groupset delivers smooth, reliable, and precise gear changes across diverse terrains. Engineered for longevity and compatibility, it’s the perfect upgrade for riders seeking performance and durability in one sleek package.
Number of Teeth | 50 |
UPC | 639266097488 |
Case Material | Alloy Steel |
Item Package Dimensions L x W x H | 11.6 x 10.3 x 7.2 inches |
Package Weight | 1.84 Kilograms |
Item Dimensions LxWxH | 12.5 x 12.5 x 4.9 inches |
Brand Name | Box |
Warranty Description | Limited Lifetime |
Model Name | Multi-Shift X-Wide Groupset For Non E-Bike |
Suggested Users | unisex-teen |
Part Number | BX-DT3-P9AMXW-KIT |
Included Components | Chain, Cassette, Rear derailleur, Shift Housing Kit, Shifter |
Size | 11-50T X-Wide Non E-Bike Groupset |
Sport Type | Cycling |
E**T
Super positive shifting under a load
The Box Three Prime 9 groupset is installed on an custom built mid-drive electric bike with a 1000 watt motor. I was a little hesitant to try such a wide range cassette because the 12 to 50 tooth spread over 9 cogs seemed aggressive but was willing to give it a try. I'm glad I did. The shifts are positive under a load with no issues.
B**Y
As good as the big brand names.
I saw this on YouTube and was curious to try it, so I did. To my surprise this group set are really good. It was a little stiff at the beginning but eventually it softens and shifted really quick. I would definitely recommend it to anyone out there that wanted to make their old 9 speed cassette converted to 1x9. Try it you will never regret it!
N**Z
3x9 conversion on my 2004 model
An upgraded I’ve wanted to do for a while now was to switch to a one by system from my 3x9. I found box a while ago and waited for more reviews before purchasing. It came brand new in packaging with everything you need to install (excluding tools). If you’re doing as I have, you will also need to purchase a narrow wide front chain ring, with teeth count of your choice + short chainring bolts. Overall, I love the look of it on my bike and as far as performance, I strongly recommend you get hold of someone who knows their bike mechanics.The install didn’t take too long, but the Ty int process took me a while to figure out. When I set the tension, it would shift perfectly in the high gears range, but then would experience crazy chain jumping around the larger, low gear ranges. For me, I managed to fix the issue with some derailleur hanger alignment changes and B screw adjustments. Personally, I recommend you start with backing (loosening) out the b screw almost all the way as a start. From there I adjusted the H + L limit screws and cable tension. Afterwards, I played around with the B screw and cable tension simultaneously until I was able to get the gears to sit in place with minimal chain jumping. 👌works great for me so far and I’m sure it’ll last a while-the derailleur tension is quite strong-there’s a little play in the cassette-there’s a little play between the derailleur and hanger-had to grind down my crank arms a little bit to fit single narrow wide chain ring (silver spots in crank arm photo)-would recommend if you want your bike to feel lighter/easier to ride-32 tooth single narrow/wide chain ring
C**S
Good groupset, bad chain but great customer service.
I really like the groupset so far, but I just set it up and cleaned the oil off the chain from the package, and I noticed I'm missing a roller on my chain.Update: I got in contact with the seller and they replaced my chain with an even better Box 2 Nickel plated chain. Definitely stoked now. Thank you!
F**1
It works
Works awesome... Highly recommend
J**N
Buy Microshift, Shimano, or garage sale bike parts instead.
Looks better than performs. Save some money and buy a better group set or buy Microshift components. Needs constant adjustment to the derailleur to keep chain from bouncing from one gear to another. Wouldn't recommend to anyone, enemy or otherwise.
J**T
Worked great to convert my 7 speed
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!
N**
Garbage
Could never get it tuned brand new derailleur hanger and everything. Bought the scram eagle NX yeah it cost a bit more but it works perfectly.
Trustpilot
1 month ago
1 month ago