Bike Chain Lock 5.18Feet 3T Steel Chain Lock Anti Theft, Premium U-Lock 17.5mm Thick Heavy-Duty Chain Bike Lock [3

Key features

• SECURE DESIGNCrafted from 3T manganese steel—proven to withstand 13 kN shear force in lab tests—this bicycle chain lock outperforms standard alloy steel in anti-theft security. Grentay ebike lock robust construction resists prying, shearing, and sawing with exceptional durability
• 17.5MM THICK PREMIUM STEEL U-LOCKFeaturing a precision-engineered complex cylinder and 17.5mm thick steel body, this heavy duty bike U-lock provides dual-layer protection against prying and drilling—backed by industrial-grade strength. It’s rigorously tested to safeguard your vehicle, making theft a non-issue
• 5.18FT MULTI-PURPOSE BIKE CHAIN LOCK Designed for ultimate versatility, extra-long bicycle chain locks secures bikes, motorcycles, scooters, and outdoor gear to posts, trees, or racks. Perfect for families: lock multiple vehicles at once, ensuring everyone stays worry-free during park trips or camping—no more struggling with short motorcycle locks
• INDUSTRIAL-GRADE DURABILITYThe motorcycle chain lock’s triple-layer electroplated surface defends against rust, rain, and daily wear—tested to outlast standard locks by 200%. Whether cycling in downpours or securing gear outdoors, it resists corrosion for years of worry-free use. No rust, no replacements—just reliable protection
• PREMIUM POLYPROPYLENE WRAPGrentay heavy duty bike lock’s soft fabric cover is waterproof, dustproof, and built to resist scratches/wear—3 times more durable than standard materials. It guards your bike against chain scratches, cuts down on riding noise, and stays in top condition ride after ride. No more worry about damage or distractions—just smooth, hassle-free cycling
• ULTRA-PORTABLE CHAIN BIKE LOCKThe flexible chain folds into its compact case—enough for a backpack. Three anti-theft keys allow easy sharing with family, while the precision quick-open cylinder delivers 2-second unlocks every time—no jams, no fuss. Whether dashing into a café, locking up at the gym, or hitting the trails, this lock proves portable security doesn’t have to mean weak protection
• COMPLETE BIKE LOCK SECURITY KITInside the box, you’ll find a 5.18ft chain lock for motorcycle, U-lock, 3 keys, and a storage case—all neatly packed for instant use. Ditch the password stress: key unlocking is straightforward, reliable, and perfect for anyone who’s ever forgotten a combo. Whether you’re commuting to work or hitting the trails, this kit has you covered
• YOUR SATISFACTION, OUR PRIORITYWe offer a 60-day return policy and 3-year replacement service—no strings attached. To ensure every customer gets a quality product, returned items are never resold. We’re committed to making you happy—thank you for trusting us!

Free shipping included. 30-day hassle-free returns.