Abus Granit Super Extreme 2500

It ranks #6 of 15 on our bike locks tier list, in B tier. That placement draws on 9 cited sources across 7 outlets.

1 of the 9 sources with a clear view is critical of it: The Best Bike Lock. Vulnerable to angle grinders. Lacks long-term reliability. Higher price not justified.

The Abus Granit Super Extreme 2500 is for the e-bike or cargo bike owner who needs a chain that reaches around a fat frame and a solid object. It carries the highest Sold Secure rating and Bicycling Magazine named it the best lock for e-bikes. It sits in B tier because the verdict is split: some reviewers found it vulnerable to angle grinders and questioned its long-term reliability at its price. If you can lock to something a U-lock reaches, the Litelok X1 in S tier or the OnGuard RockSolid in A tier is the better buy.

Yes, it is the chain lock reviewers name for e-bikes, and the pros on our board say so directly. A chain wraps around wide frames, rear racks and irregular street furniture where a U-lock will not close. The trade is weight, which matters less on an e-bike you rarely carry. Pair it with a U-lock if the bike is worth a lot.

Reviewers disagree, which is why the lock sits in B tier. One set of reviews praises its angle-grinder performance and its top Sold Secure rating. Another found it vulnerable to grinders and not worth its high-end claim. Read that as: it resists better than a cheap chain, it is not the most grinder-resistant lock on our board, and that title goes to the OnGuard RockSolid.

Reviewers raised long-term reliability as a concern, and that is the main reason its high price was called unjustified. A chain lock wears at the fabric sleeve and the cylinder first, so keep the keyway lubricated and dry and expect the sleeve to fray with daily use. The hardened links themselves should outlast the rest of the lock.

Buy the Abus Granit Super Extreme 2500. Both are heavy chains suited to e-bikes, but the OnGuard 8020 Mastiff sits in D tier after reviewers found a thinner shackle, higher failure rates in lab tests and only marginal security gains over a lighter U-lock. The Abus chain ranks ten places higher with the top Sold Secure rating.

Wrap it around the seat post or the rear rack and clip the ends together, or carry it in a pannier. Do not wear a heavy chain around your waist while riding, since a fall with the chain on you can injure your hips or back. Some riders leave a heavy chain locked at their regular parking spot and carry a lighter lock for everywhere else.