Kryptonite Disc Lock Keeper 5-S2 — Chrome compact weatherproof 5mm-pin disc brake lock with reminder cable

The Kryptonite Keeper 5-S2 Disc Lock in chrome is a compact, weatherproof disc-brake lock that immobilizes motorcycles and scooters with a reinforced cylinder and a visible orange reminder cable.

The Keeper 5-S2 is a small but robust disc-style lock engineered for urban riders who need lightweight protection without sacrificing security. Its stapler-style design clamps over a brake rotor to prevent wheel rotation, while a dual-reinforced cylinder and 5mm locking pin let it fit tighter vent holes found on many modern rotors. Built to withstand daily exposure, the chrome finish helps resist corrosion and the included bright orange reminder cable reduces the risk of riding off with the lock engaged.

How secure is the Keeper 5-S2 disc lock?

Security comes from the combination of a reinforced disc-style cylinder and a solid 5mm locking pin that resists common tampering techniques. The lock’s stapler-style body obstructs wheel movement, creating a strong physical deterrent against opportunistic thieves.

• Dual-reinforced high-security disc cylinder for improved cut and pry resistance
• Stapler-style design blocks wheel rotation to prevent roll-away theft
• Chrome finish adds corrosion resistance for consistent performance

Will this lock fit my motorcycle or scooter’s brake rotor?

The Keeper 5-S2 is designed with a 5mm pin diameter specifically to fit smaller rotor vent holes commonly found on scooters and many motorcycles. Because rotors vary by make and model, measure your rotor vent or check clearance before purchase.

• 5mm pin diameter accommodates tighter vent holes on many rotors
• Compact body fits into narrow spaces on smaller calipers and rotors
• Stapler-style shape works on most disc brake designs that accept a 5mm pin

How durable is the lock in bad weather and daily use?

The Keeper 5-S2 is built to withstand everyday outdoor conditions and frequent handling. Its compact, weatherproof construction and chrome plating help reduce corrosion and maintain smooth operation through changing seasons.

• Weatherproof components to help resist moisture and dirt
• Chrome finish for added surface protection against rust
• Lightweight, compact design for easy storage on the bike or in a bag

What accessories are included and how do they help prevent accidental ride-away?

The lock ships with a bright orange reminder cable that you loop through the handlebar or brake lever before riding. This visual cue reduces the chance of leaving with the disc lock engaged, protecting both rider and machine from damage.

• High-visibility orange reminder cable prevents accidental ride-away
• Compact packaging keeps the lock and cable ready for storage or on-bike carry
• Single-size design simplifies choice—ready to use out of the box

Who is this for: The Kryptonite Keeper 5-S2 is ideal for daily commuters, scooter owners, and urban motorcyclists who need a portable, dependable layer of security. If you want a small, weather-resistant disc brake lock that fits tighter rotor vent holes and offers a clear visual reminder before riding, this chrome Keeper model is a practical choice.