Best Disc Lock Motorcycle: 10 Picks Compared

#1 · Best Overall

1. Artago 32

• dimensions: 4.72 x 1.57 x 2.76 in
• Weight: 1.12 kg
• Material: Stainless Steel

Best for: Triple-locking premium motorcycles.

Why it ranks #1: Its 15.5 mm hardened shaft and triple-locking system pair with a 120 dB alarm and listed SRA and Sold Secure Gold approvals.

Artago's patented S.A.A. triple-locking system uses a 15.5 mm hardened-steel shaft and three internal steel balls to create three independent locking points. Paired with a smart 120 dB alarm and a don't-touch warning, this stainless-steel disc lock offers riders both a substantial mechanical mechanism and electronic alerts against interference.

Turning the key expands three internal steel balls around the 15.5 mm hardened-steel shaft, creating the stated three independent locking points. Stainless-steel construction supplies the listed material, while SRA and Sold Secure Gold approvals provide named security credentials. Its dual alarm function combines a 120 dB sound with an electronic warning device, intended to alert riders to attempts to touch or tamper with the motorcycle. The package includes three keys and a pouch, supporting key access and storage between parking stops.

Skip it if you need a lighter everyday carry; the Kryptonite Keeper 5-S2 is listed at 8 ounces and uses a compact, 5 mm-pin format.

The Artago 32 suits riders of high-end motorcycles seeking triple-locking mechanics, named approvals, and an alarm with touch warning. Its 1.12 kg weight is worth considering for regular carrying, along with the brake-disc fit required by any disc lock.

Listed on Amazon as: ARTAGO 32 State-of-the-art Motorcycle Disc Lock 2in1 | Smart Alarm, 120dB, Don't Touch Warning | Exclusive SAA Triple Locking, SRA & Sold Secure Gold Approved, Stainless Steel, Brake Anti-Theft Device

#2 · Certified Alarm

2. RADIKAL RK14S

• dimensions: 9.84 x 6.3 x 2.76 in
• Material: Special hardened stainless steel

Best for: Certified heavy-duty protection.

Why it ranks #2: This 14 mm double-locking stainless-steel model lists SRA and Sold Secure Powersport Gold approval, plus a 120 dB alarm and warning LED.

A 14 mm double-locking pin and special hardened stainless steel define the RADIKAL RK14S for riders seeking substantial mechanical resistance. Its SRA approval and Sold Secure Powersport Gold certification add named independent security credentials, while the 120 dB alarm, warning function, and LED alert bring audible and visible notification to the locking routine.

The 14 mm double-locking pin and hardened stainless-steel body form the mechanical core, with the listing noting testing against saws and shears. SRA approval and Sold Secure Powersport Gold certification offer specific credentials for buyers comparing security requirements. The alarm system reaches 120 dB and includes a warning feature and LED alert, adding notification beyond the physical lock. Keys, battery, Allen wrench, alarm module, and carrying pouch are included, supporting initial setup and transport without sourcing those listed components separately.

Skip it if you want a lighter mechanical lock without alarm components; the Kryptonite Keeper 5-S2 weighs 8 ounces and uses a 5 mm pin.

The RK14S suits riders seeking certified, hardened-steel security with both alarm and warning alerts. Its substantial pin and included alarm hardware favor a protection-focused setup over minimal carry weight; consider both the lock's size and your disc fit.

Listed on Amazon as: RADIKAL RK14S Premium Motorcycle Alarm Disk Lock 120dB On/Off, Warning LED Alert, SRA & Sold-Secure-Gold Approved Security Anti-Theft Brake Disc Lock for Motorbike, 14mm Double Locking Stainless Steel

#3 · Grinder Resistance

3. Hiplok MD1000

• dimensions: 4.13 x 3.15 x 1.38 in
• Weight: 2.5 lb
• Material: Metal

Best for: High-security attack resistance.

Resistance to angle-grinder attacks is the defining feature of the Hiplok MD1000, offering riders a disc lock focused on a demanding physical threat.

The MD1000 is specified as resistant to angle-grinder attacks and also lists an anti-drill feature, addressing two different physical attack methods. At 2.5 pounds, it is a substantial item to carry, so the included durable carry case has a practical role when transporting it. Three coded replaceable keys and a key code card provide an organized replacement-key workflow; two magnetic reminder tags are also included.

Skip it if you prioritize a lighter carry; the Kryptonite Keeper 5-S2 is listed at 8 ounces and has a compact design.

The MD1000 suits riders prioritizing stated grinder resistance and high-security certifications, particularly when carrying its case is acceptable. Its 2.5-pound weight makes transport the main boundary, so consider your regular carry routine alongside the protection features.

Listed on Amazon as: Hiplok MD1000 Anti-Angle Grinder Motorcycle Disc Lock (All Black) | High Security Disc Brake Lock with 3 Replaceable Keys | Resists Angle Grinder Attacks | Sold Secure Diamond & Art 4 Star Rated

#4 · Best Alarm Features

4. URBAN UR6

• dimensions: 3.15 x 2.36 x 1.57 in
• Weight: 500 g
• Material: Metal and reinforced nylon

Best for: Adjustable-alarm daily riders.

Why it ranks #4: The 120 dB alarm includes a warning pre-alert, A+ sensitivity, and LED signal, and the 6 mm pin is stated to fit most brake discs.

A pre-alert WARNING signal and A+ sensitivity let the URBAN UR6 react to an interference attempt before its 120 dB alarm sounds. Riders can also choose to use the lock without its alarm, giving this disc lock a more flexible routine than an alarm-only setup. Its 6 mm pin fits most motorcycle and bike brake discs.

The WARNING pre-alert and 120 dB alarm provide two distinct audible stages: the lock signals a detected attempt, then sounds its full alarm. A+ sensitivity supports that detection, while the LED light signal adds a visible cue. Because the alarm can be switched off, riders who prefer mechanical locking without sound have that option. The 6 mm pin fits most brake discs, and the stated truly waterproof construction supports use in wet conditions. The package includes the lock and keys.

Skip it if you need a pin for larger brake-disc holes; the Hiplok MD1000 listing specifies its security features but does not list a pin diameter.

Choose the UR6 if you want a waterproof alarm lock with an early warning, LED signal, and choice of alarm mode for routine motorcycle or bike parking. Its 6 mm pin is the relevant fit consideration for your brake disc.

Listed on Amazon as: URBAN UR6 Hi-Tech Motorcycle Disc Lock with Smart Alarm | Best Value | 120dB, LED, Warning, A+ Sensitivity, Truly Waterproof, Long-Life CR2 Battery, Carried Locked, Bike Anti Theft Wheel Brake Locks

#5

5. Hiplok MDX

• dimensions: 9.06 x 4.33 x 1.77 in
• Weight: 1100 g
• Material: Metal

Best for: Key-security focused riders.

Why it ranks #5: Its hardened-steel construction and anti-pick, anti-drill cylinder are backed by listed Sold Secure Gold, ART 4 Star, and ENRA ratings.

An anti-pick, anti-drill cylinder makes the Hiplok MDX a mechanical disc lock aimed at riders concerned with attacks on the key mechanism. Sold Secure Gold, ART 4 Star, and ENRA ratings provide multiple named security credentials, while three coded replaceable keys and a magnetic reminder tag help organize everyday locking and departure.

The anti-pick and anti-drill cylinder targets manipulation and drilling at the lock, while the hardened-steel construction supplies its stated material basis. Sold Secure Gold, ART 4 Star, and ENRA ratings let buyers assess it against named certification schemes. Three coded replaceable keys and a key code card support key replacement management. The magnetic reminder tag helps make the lock's presence apparent before riding, and the listing also specifies weatherproofing for outdoor use. No alarm feature is listed, keeping operation mechanical.

Skip it if you need an audible tamper warning; the RADIKAL RK14S lists a 120 dB alarm, warning function, and LED alert.

Select the MDX if mechanical resistance, named certifications, and coded replacement keys match your priorities. Its magnetic reminder supports the pre-ride routine, but riders requiring an audible tamper alert should choose an alarm-equipped disc lock instead.

Listed on Amazon as: Hiplok MDX Motorcycle Disc Lock | High Security Disc Brake Lock | Anti-Pick Lock & Anti-Drill Cylinder Sold Secure Gold, Art 4 Star & ENRA Rated | Hardened Steel with 3 Keys & Magnetic Reminder Tag

#6

6. YOHOOLYO Alarm Lock

• Weight: 12.32 oz

Best for: Alarm-equipped scooter parking.

Why it ranks #6: A 7 mm pin, 110 dB alarm, and included 5-foot reminder cable make it a practical alarm-equipped option for motorcycles and scooters.

A 110 dB alarm paired with a 7 mm pin gives the YOHOOLYO a combination of audible warning and disc locking for motorcycles, bicycles, and scooters. The pin can be set at 360 degrees, offering flexibility in positioning the lock, while the supplied five-foot reminder cable helps riders remember to remove it before moving off.

The 110 dB alarm provides an audible response intended to deter tampering, while the metal construction supplies the physical locking component. Its 7 mm pin can be positioned at 360 degrees, which offers flexibility when aligning the lock with a compatible brake disc. The listing names motorcycles, bicycles, and scooters as compatible device types. A five-foot reminder cable and carry pouch support the pre-ride routine and storage, and the lock is described as waterproof for outdoor use.

Skip it if you want a listed 120 dB alarm; the RADIKAL RK14S combines that rating with a 14 mm double-locking pin.

This YOHOOLYO fits riders who want an alarmed lock with flexible pin positioning across a motorcycle, bicycle, or scooter. Its 110 dB rating and 7 mm pin are the practical boundaries to weigh against your preferred alarm level and disc fit.

Listed on Amazon as: YOHOOLYO Alarm Disc Lock Motorcycle Disc Brake Lock Anti-Theft Waterproof 110 dB 7mm Pin 5ft Reminder Cable for Motorcycles Bike Scooter Carry Pouch (Black)

#7

7. KRASER KR6Y

• dimensions: 6.89 x 4.13 x 1.65 in
• Material: Metal

Best for: Visible alarm-lock deterrence.

Why it ranks #7: This visible yellow alarm lock provides 110 dB, three keys, batteries, a reminder cable, and a pouch in the listed package.

A bright yellow body makes the KRASER KR6Y conspicuous at the wheel, while its alarm responds to detected manipulation with three warning beeps before the full 110 dB alarm. That stepped response combines visible deterrence with sound, and the included reminder cable, pouch, keys, and batteries help support carrying and daily use.

The bright yellow finish makes the lock easier to notice, supporting its stated visible-deterrent role. When manipulation is detected, three warning beeps precede the 110 dB alarm if tampering persists, creating a staged alert rather than a single immediate sound. The included reminder cable helps prevent riding away with the lock engaged, and the pouch provides a place to store it between uses. Batteries and an extra set are included along with three keys and an Allen wrench.

Skip it if you prefer a silent lock without battery upkeep; the IRON JIA'S DX4 is alarm-free and requires no batteries or charging.

Choose the KR6Y if a visible alarm lock with staged warning beeps suits motorcycle, moped, or e-bike parking. The included batteries support setup, but ongoing battery-powered operation is a relevant boundary for riders who prefer mechanical-only locking.

Listed on Amazon as: KRASER KR6Y Alarm Disc Lock, Reinforced Disc Brake Lock with 3 Keys (Others 2), Heavy Duty Anti-Theft Motorcycle with Alarm,110dB, Weather-Resistant, Reminder Cable, Pouch, Motorbike Moped E-Bike

#8 · Most Compact

8. Kryptonite Keeper

• dimensions: 3.15 x 1.18 x 1.18 in
• Weight: 8 oz
• Material: Stainless Steel

Best for: Compact-lock commuters.

Why it ranks #8: Its 5 mm pin suits smaller vent holes, and the compact, lightweight weatherproof lock includes a bright orange reminder cable.

A 5 mm pin lets the Kryptonite Keeper 5-S2 fit smaller vent holes, making it a practical option when a larger pin would not suit the rotor. The compact, lightweight lock immobilizes the vehicle against roll-away or ride-away theft, and its bright orange reminder cable helps prevent setting off with the lock engaged.

The 5 mm pin is specified for smaller vent holes, so riders can consider it where disc openings are tight. Its stapler-style construction immobilizes the vehicle, while the bright orange reminder cable provides a visual reminder before riding away. The lock is described as compact, lightweight, and weatherproof, supporting carry and outdoor parking routines. Its dual reinforced high-security disc-style cylinder adds a stated security feature without adding alarm operation or battery upkeep to the locking workflow.

Skip it if you want an audible deterrent at the wheel; the URBAN UR6 adds a 120 dB alarm and pre-alert signal.

Pick the Keeper 5-S2 if a compact mechanical lock and reminder cable suit your parking routine, especially with smaller rotor vents. It is not the choice for riders seeking an audible alarm, and its 5 mm pin is the key fit detail.

Listed on Amazon as: Kryptonite Keeper 5-S2 Disc Lock – Chrome

#9

9. IRON JIA'S Mechanical Lock

• Weight: 8.8 oz
• Material: Stainless Steel Alloy

Best for: Quiet battery-free locking.

Why it ranks #9: Its all-mechanical design needs no batteries or charging and avoids alarm noise; the listed package also includes a reminder cable.

Its all-mechanical, alarm-free construction keeps the IRON JIA'S disc lock silent and eliminates battery charging or electronic-failure concerns identified in the listing. That makes it suited to riders who want a straightforward physical lock without nuisance alarm sounds. The supplied reminder cable supports a separate but important step: remembering to remove the lock before riding.

The premium aluminum-alloy description and all-mechanical structure frame this lock as a battery-free option, so there is no charging task or alarm system in the routine. Its quiet operation avoids alarm sounds triggered by weather, according to the product information. The included reminder cable addresses the risk of riding off while the disc lock remains attached. Setup guidance is available in the product video, but the supplied facts do not specify a pin diameter or disc-hole fit range, so fit cannot be assessed from those details.

Skip it if you want a tamper-triggered alarm; the KRASER KR6Y lists three warning beeps followed by a 110 dB alarm.

Choose this IRON JIA'S lock if silent, battery-free mechanical security suits your parking routine and you value a reminder cable. Riders seeking an audible warning should look elsewhere; the supplied details do not state a pin size or disc-fit range.

Listed on Amazon as: IRON JIA'S Motorcycle Disc Brake Lock, Anti-Theft, Alarm-Free

#10

10. Kryptonite Evolution

• dimensions: 3.15 x 1.18 x 1.18 in
• Weight: 1.4 lb
• Material: manmade

Best for: Compact hardened-steel security.

Why it ranks #10: The 13 mm hardened-steel shackle and double deadbolt are substantial, but its listing identifies it as a bike lock rather than a motorcycle-specific model.

A 13 mm hardened-steel shackle and flat-top plate give the Kryptonite Evolution Compact a compact-height profile while allowing attachment to the rotor spider in more than one location. The design requires two cuts to defeat, and a hardened double deadbolt adds stated resistance to twist attacks for riders seeking a mechanical lock.

The 13 mm hardened max-performance steel shackle is specified to resist bolt cutters and leverage attacks, while the hardened double deadbolt adds protection against twisting. Its flat-top plate keeps the lock compact in height and allows attachment to the rotor spider in more than one location, helping accommodate different attachment points. The design is stated to require two cuts to defeat. Three stainless-steel keys include an LED replaceable key fob, and the bright orange reminder cable supports the departure check.

Skip it if you want a lighter lock for routine carrying; the Kryptonite Keeper 5-S2 is listed at 8 ounces and has a compact design.

The Evolution Compact suits riders wanting a hardened-steel mechanical lock with flexible rotor-spider positioning and a reminder cable. Its 1.4-pound weight matters if carried daily, while its compact height and key features support regular motorcycle or bike parking.

Listed on Amazon as: Kryptonite Evolution Compact Disc Lock, 13mm Steel Anti-Theft Bike Lock