I bought the Fidlock TWIST 590 after my partner bought an electric Mountain Bike with limited frame space. After a few months of use across road, gravel, and MTB trails, I can confidently say: this isn’t just a bottle—it’s a system. And it works.
Magnetic Mounting System
- Mounting: The bottle uses a magnetic-mechanical interface that snaps onto a low-profile base mounted to your frame’s bottle bosses.
- Attachment: Just push the bottle near the base and the magnets pull it into place. It locks with a satisfying click.
- Removal: Twist the bottle sideways to release. You can’t pull it straight off—so it won’t eject on rough terrain.
I’ve never lost a bottle, even on rooty descents or when bunny-hopping curbs. It’s genuinely confidence-inspiring.
Bottle Design & Ergonomics
- Capacity: 590 ml—enough for shorter rides or pairing with a second bottle.
- Material: BPA-free polyethylene with a soft-squeeze body for easy hydration.
- Cap: High-flow, self-sealing valve with an optional dirt cover (a must for MTB).
- Shape: Slightly tapered with ergonomic grip zones—easy to grab and squeeze, even with gloves.
The bottle is dishwasher-safe, and the cap doesn’t leak when tossed in a frame bag or backpack.
Compatibility & Modularity
- Bike Base: Mounts to standard bottle cage bosses.
- Uni Base: Optional strap-on base for bikes without mounts (e.g. full-suspension frames or oddball gravel rigs).
- Other Accessories: Fidlock also makes toolboxes, bags, and larger bottles that use the same base—so you can swap them out as needed.
I’ve used the same base to carry a bottle on one ride and a tool pod on the next. It’s a modular dream for bikepackers.
Durability & Maintenance
- After 6 months of use:
- No leaks or cracks
- Magnets still snap tight
- Cap seals well, even after repeated drops
- The mounting base is low-profile, so it doesn’t snag on bags or knees when the bottle’s off.
Tip: Rinse the magnetic interface occasionally—mud buildup can reduce the snap.
Pros
- Secure, cageless design—great for tight frames
- Fast, intuitive access while riding
- Modular system with swappable accessories
- Dirt cover option keeps valve clean
- Looks sleek and minimalist
Cons
- Pricey compared to standard bottles
- 590 ml may be small for long rides
- Requires proprietary base (not compatible with standard cages)
- Twist-off motion takes a few rides to master
Final Verdict
The Fidlock TWIST Bottle 590 is a clever, well-executed solution to a real-world problem: how to carry water securely and accessibly on modern bikes. It’s not just a gimmick—the magnetic system works, and the bottle itself is high quality. If you ride a bike with limited space or just want a cleaner, more secure setup, this bottle earns its keep.
