Best Motorcycle Disc Locks 2026: Tested and Ranked
A disc lock is the single most effective portable security device you can carry on a motorcycle. It is small enough to fit under your seat, visible enough to deter opportunistic thieves, and when equipped with an alarm, loud enough to alert everyone within a city block.
We evaluated disc locks on five criteria: pin thickness (thicker resists cutting), alarm volume, weather resistance, ease of use with gloves, and value for money. Here are the best options for 2026.
Top Picks at a Glance
| Lock | Pin | Alarm | Price | Best For |
|---|---|---|---|---|
| Kryptonite Keeper 5-S2 | 5mm | No | $30 | Budget pick |
| ABUS Granit Detecto 8077 | 16mm | 100dB | $120 | Overall best |
| Xena XX-6 | 6mm | 120dB | $65 | Best alarm |
| Oxford Monster | 14mm | No | $55 | Best no-alarm |
| Kryptonite New York | 16mm | No | $90 | Maximum security |
1. ABUS Granit Detecto 8077 -- Best Overall
ABUS Granit Detecto 8077
The ABUS Granit Detecto 8077 is the gold standard in motorcycle disc locks. The 16mm hardened steel pin resists bolt cutters and angle grinders. The integrated 3D tilt sensor triggers a 100dB alarm on any movement, and the lock automatically re-arms after the alarm cycles. It carries a Sold Secure Gold rating, the highest independent security certification available.
The only downside is weight (1.5 lbs) and price, but for daily-driver security, nothing else comes close at this level of protection.
Check Price on Amazon2. Xena XX-6 -- Best Alarm Disc Lock
Xena XX-6
The Xena XX-6 has the loudest alarm in the category at 120dB -- that is louder than a chainsaw. The stainless steel body resists corrosion, and the lock is compact enough to carry in a jacket pocket. The 6mm pin is thinner than premium options, so it is more of an alarm-first deterrent than a brute-force-resistant lock.
Ideal for riders who park in public areas where the alarm sound is the primary defense. Pair it with a chain for complete protection.
Check Price on Amazon3. Kryptonite Keeper 5-S2 -- Best Budget
Kryptonite Keeper 5-S2
The Kryptonite Keeper is the best disc lock under $35. No alarm, no frills, just a solid 5mm hardened steel pin and Kryptonite's anti-theft protection offer (they will reimburse you up to a certain amount if your bike is stolen while using the lock). The bright orange reminder cable is included.
Not the most secure option for overnight parking, but perfect as a grab-and-go deterrent for quick stops.
Check Price on Amazon4. Oxford Monster Disc Lock -- Best No-Alarm Premium
Oxford Monster Disc Lock
If you do not want an alarm but want serious physical security, the Oxford Monster delivers a 14mm pin with double-locking mechanism at roughly half the price of the ABUS Granit. Sold Secure Gold rated. The neon yellow body serves as a visible deterrent.
Great for garage use or riders who find alarms too sensitive and annoying in daily use.
Check Price on Amazon5. Kryptonite New York Fahgettaboudit -- Maximum Security
Kryptonite New York Fahgettaboudit
The heaviest, most overbuilt disc lock available. The 16mm Boron Manganese steel pin is virtually unbreakable by hand tools. Sold Secure Diamond rated (the highest tier). At 2.2 lbs, it is heavy, but that weight is all hardened steel where it matters.
Best for high-theft urban environments where you need maximum physical resistance and do not need an alarm.
Check Price on AmazonHow to Choose the Right Disc Lock
Pin Thickness Matters Most
The pin is what a thief attacks first. A 5mm pin can be defeated with large bolt cutters. A 14-16mm hardened steel pin requires an angle grinder, which is loud, slow, and attracts attention. For overnight security, always choose 14mm or thicker.
Alarm vs No Alarm
Alarms add a layer of deterrence but come with tradeoffs: false triggers from wind or vibration, battery maintenance, and higher cost. In dense urban areas, alarms are highly effective. In a private garage, the physical lock is what matters.
Reminder Cables Save Rotors
Always use a reminder cable. Riding off with a disc lock attached will damage your brake rotor and potentially cause a crash. Most quality disc locks include one, but you can buy them separately for a few dollars.
Our Recommendation
For most riders, the ABUS Granit Detecto 8077 is the best disc lock you can buy. It combines maximum physical security with a reliable alarm system. If budget is a concern, the Xena XX-6 gives you the loudest alarm at a midrange price, and the Kryptonite Keeper 5-S2 is a solid grab-and-go option under $35.
For the best overall protection, pair any disc lock with a heavy chain lock and a GPS tracker.