Calibre is a direct-to-consumer British brand focused on relatively inexpensive mountain bikes that, according to them, can still be ridden hard. How inexpensive? The Bossnut costs just 1,100 pounds, or around $1,400 USD, depending on the inevitable taxes and duties. Some perspective: You get an entire 130mm-travel trail bike for around $600 less than the last drivetrain I reviewed.

Like the majority of bikes in the price range, Calibre has used SRAM’s 12-speed SX drivetrain, along with a set of Level T brakes (with a 180mm front rotor) to slow you down. Can you spot what’s missing? A dropper post, of course, so you’ll need to factor in another $200-ish dollars if you want to unlock the ‘nut. The not-tubeless-friendly WTB tires also refused to seal up, so add another $100-ish, too.

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