The Box Prime 9 range of components has made riders reevaluate what a 9-speed drivetrain can do. It offers all the range of a 12-speed setup, but without the complexity, weight, and excessive shifting. Plus, it's far more affordable. You can push it hard, and you won't be heartbroken when parts wear out or break. Box Three is the ultimate all-rounder drivetrain, delivering excellent performance and durability at a budget-friendly price. Single-shift groupsets are designed for e-bikes and feature a 12T smallest cog instead of the 11T on multi-shift options. This item is perfect for riders who want the range of a 12-speed setup with the simplicity and weight savings of a 9-speed. It's a great choice to upgrade an older 2x/3x drivetrain bike 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, a Derailleur, a Chain, and a 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 clutch and is available 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. It weighs 135g, is made of glass fibre, nylon composite, and steel, and has a 22.2mm bar clamp. It comes with a stainless steel shifter cable. The chain has 9 speeds, is compatible with 10, 11, or 12-speed narrow/wide chainrings, weighs 312g, is made of hardened alloy steel with solid pin construction, and comes with a quick link and 126 links. The cassette has 9 speeds, weighs 545g (11-46t) or 660g (11-50t), is made of stamped steel cogs with the largest ones pinned to a steel spider, and has a Shimano style HG freehub mounting. The cog-tooth spans are 11-46t: 11 - 13 - 15 - 18 - 22 - 28 - 34 - 40 - 46; 11-50t: 11 - 13 - 15 - 18 - 22 - 28 - 34 - 42 - 50; 12-46t: 12 - 14 - 16 - 18 - 22 - 28 - 34 - 40 - 46; 12-50t: 12 - 14 - 16 - 18 - 22 - 28 - 34 - 42 - 50.

Using the Box Three Prime 9 Speed Wide Single Shift Groupset is a breeze. First, make sure to install all the components correctly. The shifter can be adjusted to your preference, with single or multi - shift options available. When riding, you'll notice the smooth shifting that gives you the range of a 12 - speed setup with the simplicity of a 9 - speed. Just remember, you must use a Prime 9 chain with this groupset when using other brands' chainrings. As for maintenance, regularly clean the chain with a degreaser and lubricate it to keep it running smoothly. Check the derailleur for any signs of wear or damage, especially after a hard ride. The cassette should also be inspected for worn - out cogs. Keep the shifter clean and make sure the cable is in good condition. If you need to replace any part, all Prime 9 components are cross - compatible, so you can easily mix and match. And always use a standard derailleur hanger as it's not compatible with Direct - Mount hangers.