Coupon Code ⚠️ Unverified
Expires Dec 31 Happy Birthday, Cyclist!
••••••••
We earn a commission if you shop through this link.
ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable
ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable is a dual-layer anti-theft system featuring a hardened steel U-lock and 4-foot steel cable. Priced at $31.99, it offers weather-resistant protection with silicone coating, ideal for urban cyclists securing bikes on streets or public racks.
$31.99
● In stock
Buy at Yiwu Rock Sports Goods →Price and availability may change. Click to see current details on Yiwu Rock Sports Goods.
★
Key features
- 18.76mm U-lock with 25mm hardened steel shackle
- 4-foot durable steel security cable included
- Silicone coating prevents scratches and rust
- 2 non-rusting keys with serpentine design
- Inside dimensions: 5.9 x 5.32 inches
- Weather-resistant for all-season use
- Fits most bike types including mountain and road
✓
Pros
- +Strong resistance to bolt cutters and prying
- +Cable adds flexibility to secure wheels
- +Silicone cover protects bike finish
- +Compact and portable with mounting bracket
- +Affordable for its security level
!
Cons
- −Cable can fray over time with heavy use
- −Keys may stick if not fully inserted
- −Less robust than premium U-lock brands
ℹ
About ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable
What is ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable?
The ROCKBROS Bike Lock Set is a high-security locking solution designed for cyclists seeking reliable protection against theft. It combines a heavy-duty U-lock with a 4-foot steel security cable, allowing users to secure both the bike frame and wheels to fixed objects like poles, racks, or fences. Built with durable materials including a hardened steel shackle and carbon steel alloy body, this lock set resists cutting and leverage attacks. Its silicone-coated design prevents frame scratches and enhances weather resistance, making it suitable for long-term outdoor use.
Key features
- Heavy-Duty Construction — 18.76mm U-lock and 25mm hardened steel shackle resist bolt cutters and prying.
- Extended Security Cable — 4-foot steel cable secures wheels or attaches to larger fixtures.
- Protective Silicone Coating — 4–11mm coating prevents bike scratches and corrosion from rain or snow.
- Weather-Resistant Keys — Includes 2 non-rusting keys with serpentine design for reliable operation in wet conditions.
- Universal Fit — Inside dimensions (5.9 x 5.32 in) fit most bike frames and common urban anchor points.
- Dual-Layer Security — U-lock secures the frame while the cable locks wheels or accessories.
- Convenient Storage — Compact design allows mounting on bike frames with included bracket.
Who is ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable for?
This lock set suits urban commuters, college students, and recreational riders who park in high-theft areas. It's ideal for those needing dependable, everyday security without the bulk of larger chains. The combination of U-lock and cable offers flexibility for securing multiple components of road, mountain, or scooter bikes.
How does ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable compare?
Compared to standard cable locks or lightweight U-locks, this set delivers superior cut resistance thanks to its hardened steel components. It’s more compact and easier to carry than heavy chain locks, yet offers stronger protection than plastic-coated cables. While not as robust as high-end U-locks from premium brands, it provides solid mid-tier security at a competitive price point, especially with the added versatility of the 4-foot steel cable.
🎯
Best use cases
- →Locking bike to street poles or racks
- →Securing wheels and frame simultaneously
- →Daily urban commuting in moderate-risk areas
- →College campus bike parking
- →Scooter or e-bike storage outdoors
🛒
Is ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable right for you?
The ROCKBROS Bike Lock Set is best for commuters and casual riders needing reliable, portable security. No special skills required—easy to use with key-based locking. Ideal for moderate-risk urban environments. Consider a thicker chain lock for high-theft zones, or a smart lock for keyless access. This set balances cost, weight, and protection for everyday use.
How it compares: Compared to basic cable locks, this U-lock and cable combo offers far better cut resistance. It's lighter and more portable than heavy-duty chain locks, though slightly less secure than top-tier U-locks. Offers better value than most dual-lock setups in the $30–$50 range.
Are There Active Yiwu Rock Sports Goods Coupons for This Product?
Coupon Code ⚠️ Unverified
Expires Dec 31 Loyalty Program Exclusive
••••••••
We earn a commission if you shop through this link.
More from Yiwu Rock Sports Goods
?
Frequently Asked Questions
What is the thickness of the ROCKBROS U-lock shackle?
▾
The U-lock shackle is made from 25mm hardened steel, providing strong resistance against bolt cutters and leverage attacks. The U-lock body measures 18.76mm, enhancing overall durability and security for everyday urban use.
Does the lock come with a mounting bracket?
▾
Yes, the ROCKBROS Bike Lock Set includes a mounting bracket for easy attachment to your bike frame. This allows convenient transport and quick access when you need to lock up during commutes or errands.
How long is the included security cable?
▾
The set includes a 4-foot (48-inch) steel security cable. This length provides flexibility to loop through both wheels and the frame when securing your bike to a post or rack.
Is the lock weather-resistant?
▾
Yes, the lock features a 4–11mm silicone coating that protects against rust and corrosion. The keys are also designed to resist moisture, ensuring reliable performance in rain, snow, or humidity.
Can I use this lock for an e-bike or scooter?
▾
Yes, the U-lock’s 5.9 x 5.32-inch internal dimensions fit most e-bikes and scooters. The combination of U-lock and cable allows secure attachment of both frame and wheels to fixed objects.
How much does ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable cost?
▾
ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable is $31.99 at Yiwu Rock Sports Goods. Prices may change — click through to Yiwu Rock Sports Goods for the latest.
Is ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable in stock at Yiwu Rock Sports Goods?
▾
Yes, ROCKBROS Bike Lock Set Heavy Duty Bike U Lock with 4 Ft Security Steel Cable is currently in stock at Yiwu Rock Sports Goods.
Are there coupon codes for Yiwu Rock Sports Goods?
▾
Yes — Love Those Deals currently tracks 2 active Yiwu Rock Sports Goods coupons. See the coupons section on this page to copy a code before checkout.
≡
Specifications
- SKU
- 32110001001
Last updated May 14, 2026