Crankbrothers M19
Top PickWhat We Like
- Solid construction with precisely machined bits that fit snugly.
- Compact size fits easily in pocket or saddle bag for daily carry.
- Chain tool works across 8-12 speed chains with clean pin pushing.
Worth Noting
- At 175g, the tool adds weight for riders tracking every gram.
- Some units may separate under heavy torque or develop rust if stored wet.
- Tool Count
- 19 functions
- Build Material
- Chromium-Molybdenum steel
- Included Accessories
- None
- Weight & Folded Size
- 175 g (6.2 oz)
Read the full review
The Crankbrothers M19 delivers a well-machined 19-function set built around a chain tool that works with 8-12 speed chains without issue. The chromium-molybdenum steel bits fit hex bolts snugly and resist rounding under moderate torque from trailside repairs. At 175g, the tool feels solid without being cumbersome, slipping into a pocket or saddle bag. Each bit locks into the body securely, and the chain tool pushes pins cleanly through stiff links. The flat profile minimizes bulk, making it a practical daily carry for riders who want one tool for most adjustments.
Mountain bikers and commuters who need a single multi-tool for trailside fixes will appreciate the M19's combination of durability and tool range. The included spoke wrenches, Torx drivers, and Phillips head cover drivetrain and accessory adjustments. Weight-conscious road riders aiming for ultralight builds should consider lighter options that omit the chain tool, as the M19 sits mid-pack at 175g. It is worth noting that some units have shown rust when stored wet — drying the tool after rainy rides prevents this, and the lifetime warranty offers peace of mind for long-term ownership.
Bottom line: For riders who need a single tool that handles most trailside repairs without breaking the bank, the M19 delivers on the essentials with a lifetime warranty.