1-3/4 In. Padlock With 5-3/8 In. Long Adjustable Shackle Bike Lock

Discover the Master Lock 1.75" Padlock with a 5.38" Adjustable Shackle, engineered for cyclists who demand reliable protection on every ride. Crafted from hardened steel, this compact lock features a robust 9/32" shackle that can be lengthened to fit a wide range of bike frames, racks, and accessories while maintaining a sleek, low‑profile silhouette.

Why it matters: The adaptable shackle lets you secure both standard and oversized components without compromising strength, giving you peace of mind against opportunistic theft. Its weather‑resistant finish repels rust and corrosion, ensuring dependable performance in rain, snow, or dusty trails.

• Adjustable 5.38" shackle: Extendable design provides versatile clearance for various bike frames, making it an ideal universal bike lock.
• 9/32" shackle diameter: Thick, hardened steel core resists cutting and leverage attacks, delivering top‑tier theft deterrence.
• Compact 1.75" body: Small footprint fits easily in a saddlebag or pocket, offering portable security without bulk.
• Weather‑proof coating: Corrosion‑resistant finish protects the lock from moisture, salt, and UV exposure for long‑lasting reliability.
• Master Lock brand assurance: Trusted name in security guarantees consistent quality, durability, and customer support.

Secure your ride with confidence: Whether you’re commuting through the city or tackling rugged trails, this Master Lock padlock delivers adaptable strength and convenience. Its adjustable shackle and hardened construction make it a standout choice for cyclists seeking a dependable, easy‑to‑carry bike lock that won’t let thieves win.