If you're in the market for a new drivetrain the Box Prime 9 groupset is a great option! Many of the Big Box (pun intended) brands have a lot of options and it makes it hard to choose what's right for you. This drivetrain is not so hard on the wallet and is meant to take all the abuse you can throw at it. The great thing about this drivetrain is you don't get overly heavy parts because it's only got what you need. The 9 speed cassette is really what helps this bring the weight down. This isn't your typical old school 9 speed though. You get a seriously good gear range with just the right spacing and not too much in between. You can't go wrong with the Prime 9 because it's backed by Box's Shift Happens warranty program that really stands behind the product.
Box's Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory. It embraces range without adding complexity. The outcome is fewer parts, reduced weight, and increased durability.
The x-wide rear derailleur features a limited slip clutch, which engages instantly with constant torque for less chain slap, better chain engagement and no dropped chains
The 11-50t cassette offers ultra-wide ratio with consistent progressions
Prime 9 technology offers the same range as a 12-speed drivetrain, with fewer gears to shift through
Fewer parts, reduced weight, and increased durability
Prime 9 drivetrains significantly reduce the chain angle in the lowest gears, allowing the chain to run straighter across all gears, increasing the life of the chain and cassette
The 2-piece multi-shift pull lever allows for riders to move up to 3 gears per shift
The Prime 9 chain is compatible with modern narrow/wide chainrings, and resists stretching over time, and decreases wear on the cassette and chainring
Cassette Cogs 11-13-16-20-24-30-36-42-50