Traditional folding multi-tools carry functions you rarely use, adding weight and bulk for tools that sit idle in your pack. Crank Brothers strips the M5 down to five essential functions that handle the adjustments riders actually make on the trail. Four hex keys cover stem bolts, brake lever clamps, and derailleur adjustments, while a Phillips screwdriver addresses limit screws and accessory mounting. This minimalist approach delivers 85 grams of functional tools without the chain breaker, spoke wrenches, or specialty bits that most riders never touch between shop visits.

The 6150 high tensile steel tools fold into a 6061-T6 aluminum frame measuring 89mm long by 30mm wide. Each hex key fits precisely in bolt heads without the loose tolerance that rounds fasteners. Textured side grips on the aluminum frame provide purchase when you're wearing gloves and working with wet hands. The compact dimensions slide into jersey pockets or small frame bags, and the 85-gram weight registers as barely noticeable when you're carrying the tool for hours.

The hex key selection spans 3mm through 6mm, covering the most common bolt sizes on modern bicycles. Stem bolts, seat clamps, brake levers, derailleur mounting hardware, and water bottle cages all fall within this range. The Phillips #2 screwdriver handles derailleur limit screws and cable barrel adjusters. For riders who need chain breaking capability or spoke wrenches, Crank Brothers offers the M10, M19, and M20 options with expanded tool counts, but the M5 targets riders who prioritize weight savings over comprehensive coverage.... Read More