Kryptonite Keeper 5‑S2 Disc Lock - Chrome compact 5mm pin, weather‑resistant with reminder cable

The Kryptonite Keeper 5-S2 Disc Lock in chrome is a compact, weather-resistant disc brake lock designed to immobilize motorcycles and scooters with smaller vent holes.

Built for riders who need a dependable, low-profile security accessory, this disc lock combines a reinforced cylinder with a narrow 5mm locking pin to fit into tight rotor holes. Its stapler-style mechanism clamps around the brake disc to prevent wheel rotation, while the included bright orange reminder cable helps stop accidental attempts to ride away with the lock still fitted.

How does this disc lock keep my bike from being rolled or ridden away?

The Keeper 5-S2 locks through the brake rotor so the wheel cannot turn, creating a physical barrier to riding or rolling the bike. Its reinforced disc-style cylinder resists common tampering methods and the stapler-style construction makes it difficult to pry open.

• Stapler-style locking clamps securely around the rotor
• Dual reinforced cylinder increases cut and pry resistance
• Bright reminder cable reduces risk of starting with the lock engaged

Will the 5mm pin fit my motorcycle or scooter’s rotor vent holes?

The Keeper 5-S2 uses a 5mm diameter pin specifically intended for smaller vent holes found on many scooters and compact motorcycle rotors. Measure your rotor vent or hole diameter to confirm compatibility before purchase.

• 5mm pin designed for smaller vent openings
• Compact profile suits tighter rotor geometries
• One-size fits many scooters and lightweight motorcycles

Is this lock suitable for outdoor use and daily commuting?

Yes—the lock is made to withstand routine exposure to the elements and everyday handling without adding significant weight to your ride. Its weatherproof construction helps prevent corrosion, and the chrome finish offers both corrosion resistance and a visible deterrent.

• Weather-resistant materials reduce rust and wear
• Lightweight, compact form for easy storage on the bike or in luggage
• Chrome finish improves durability and visibility

What safety extras come with the Kryptonite Keeper 5-S2?

The package includes a highly visible reminder cable that you loop through the handlebars or ignition area to prevent accidental departure with the lock fitted. The cable’s bright orange color is intended to draw attention before you start the engine.

• Bright orange reminder cable included for added safety
• Stapler-style mechanism for straightforward application and removal
• Two precision keys typically included for secure access

Who is this for? The Kryptonite Keeper 5-S2 is aimed at scooter riders, commuters and owners of smaller-displacement motorcycles who need a compact, reliable disc brake lock that fits narrow rotor vent holes. It’s ideal for daily use, short-term stops, and as part of a layered security routine where visibility, ease of use and weather resistance matter. For larger motorcycles or rotors with bigger vent holes, consider a disc lock with a thicker pin or a different model designed for heavier machines.