The Box Prime 9 component range has transformed riders' views on 9-speed drivetrains. It offers the same gear range as a 12-speed setup but without the complexity, extra weight, and excessive shifting. Plus, it's much more budget - friendly. You can ride aggressively, and when parts wear out or break, you won't be heartbroken over the cost. Box Three is Box's top all - around drivetrain, providing great performance and durability at a wallet - friendly price. The single - shift groupsets are designed for e - bikes and come with a 12T smallest cog instead of the 11T in multi - shift options. This groupset is perfect for riders who want the range of a 12 - speed setup with the simplicity and weight savings of a 9 - speed one. It's also an excellent choice for upgrading older 2x/3x drivetrain bikes without breaking the bank. All Prime 9 components are cross - compatible across the range and can be bought separately to mix and match. It works with 10, 11, or 12 - speed Shimano, SRAM, and most other brands' narrow/wide chainrings (you must use a Prime 9 chain). Each Box Three groupset includes a Twin Lever Shifter, Derailleur, Chain, and Cassette. The rear derailleur has 9 speeds, weighs 349g, and is made of aluminium, glass fibre/nylon composite, and steel with a matte black finish. It's compatible with Prime 9 chains and cassettes, with a max cassette range of 11 - 50t or 11 - 46t depending on the option. It has a limited - slip, non - adjustable clutch and comes in Wide (46t max) or X - Wide (50t max) cage lengths. It's only compatible with standard derailleur hangers. The shifter has 9 speeds, with single or multi - shift options, weighs 135g, and is made of glass fibre, nylon composite, and steel. It has a 22.2mm bar clamp and comes with a stainless steel shifter cable. The chain is 9 - speed, compatible with various chainrings, weighs 312g, is made of hardened alloy steel with solid pin construction, has a quick joining link, and has 126 links. The cassette is 9 - speed, with different weights for 11 - 46t (545g) and 11 - 50t (660g), made of stamped steel cogs with the largest ones pinned to a steel spider, and mounts only on Shimano style HG freehubs. The cog - tooth spans are available in different configurations like 11 - 46t, 11 - 50t, 12 - 46t, and 12 - 50t.

Using your Box Three Prime 9 Speed X - wide Single Shift Groupset is a breeze. First, make sure you install it correctly according to the bike's specifications. When shifting gears, just use the shifter as you would with any other bike. For single - shift mode, you can quickly change gears with a simple press. For e - bikes, this single - shift design works great. Remember, always use a Prime 9 chain when using this groupset with other brands' chainrings. When it comes to maintenance, keep the components clean. You can use a mild bike cleaner and a soft brush to clean the derailleur, shifter, chain, and cassette. Lubricate the chain regularly to ensure smooth shifting. Check the chain for wear and replace it if it's stretched or damaged. The derailleur's limited - slip clutch is non - adjustable, so don't try to modify it. Also, note that this groupset is only compatible with standard derailleur hangers, not Direct - Mount ones. If you're buying components separately, ensure they are cross - compatible within the Prime 9 range. And if you need to replace the cassette, make sure it's a Shimano style HG freehub mounting style. With proper use and maintenance, your Box Three groupset will serve you well for a long time.