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Master Lock 8170D U-Lock Bike Lock with Key, 1 Pack , 6-1/8 in. Wide , Black

  • Based on 2,510 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 21
Order within 12 hours and 14 minutes
Available payment plans shown during checkout

Size: 6-1/8 inch U-Lock


Style: Lock


Features

  • Outdoor heavy duty bike U-lock is best used as a bicycle lock
  • U-shaped steel bike lock with key; Includes carrier bracket for easy transportation
  • Bike lock features a hardened steel body and double locking shackle for superior cutting and prying resistance
  • Bike lock body is 6-1/8 in. (16 cm) wide, with 8 in. (20 cm) shackle length, 4 in. (10 cm) width and 1/2 in. (13 mm) diameter
  • Includes one u-lock bike lock, two keys
  • Affordable U-Lock Protection
  • Disc key for additional anti-pick protection
  • Includes carrier bracket for storage convenience
  • 6-1/8-inch by 8-inchby 4-inch
  • Vinyl coating for weather and scratch resistance

Description

The Master Lock 8170D U-Lock Bike Lock with Key features a 6-1/8 in. (15 cm) wide hardened steel body for maximum strength and reliability. The 1/2 in. (13 mm) diameter double locking shackle is 8 in. (20 cm) long and made of hardened steel, offering extra resistance to prying, cutting, and sawing. The disc key cylinder prevents picking.. From the Manufacturer The object is to get away on your bike. Not for someone to get away with it. Security doesn't get any tougher than this. These locks are built with double locking shackles and high-security disc cylinders. Pliable rubber coated shackles protect your bike.


Brand: ‎Master Lock


Item Dimensions LxWxH: ‎9.8 x 7.33 x 1.33 inches


Material: ‎Alloy Steel


Style: ‎Lock


Color: ‎Black


Number Of Pieces: ‎1


Finish Type: ‎Painted


Included Components: ‎...


Shape: ‎U Shape


Item Weight: ‎1.96 Pounds


Manufacturer: ‎Master Lock


Part Number: ‎8170D


Item Weight: ‎1.96 pounds


Product Dimensions: ‎9.8 x 7.33 x 1.33 inches


Country of Origin: ‎China


Item model number: ‎8170D


Is Discontinued By Manufacturer: ‎No


Size: ‎6-1/8 inch U-Lock


Finish: ‎Painted


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎Limited Lifetime Warranty


Domestic Shipping: Item can be shipped within U.S.


Date First Available: April 9, 2008


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Feels a bit cheap, but still works.
Size: 6-1/8 inch U-Lock Style: Lock
I work in a low traffic area, and when I'm at work, I can see my bike from my desk, and can get to it in less than a minute. I got this lock because I wanted something that would register my bike as "locked" in my mind and the small number of people that walk past it in a day. Even so, I was a little disappointed in how cheap it felt. It's fine for my purposes, but if you're trying to secure your bike in a higher traffic/risk area, definitely invest in a better one. ... show more
Reviewed in the United States on August 4, 2022 by Josh

  • Powerful and easy to carry
Size: 6-1/8 inch U-Lock Style: Lock
Because of stability, it is easy to carry the lock.
Reviewed in the United States on September 14, 2022 by Hyeon Jung Kim

  • Sturdy
Size: 7-1/4 inch U-Lock Style: Lock
Performs as expected. Excellent purchase, bike is much more secure when parked outside.
Reviewed in the United States on September 10, 2022 by Amy

  • Does the job
Size: 6-1/8 inch U-Lock Style: Lock
My bike hasn't been stolen since I started using this. What else is there to say? I resisted getting a U-lock for a long time. But after my last cable lock was cut - apparently easily - and my bike disappeared, I changed my mind. Wish I'd done it earlier.
Reviewed in the United States on August 16, 2022 by E. M. Young

  • Strong lock
Size: 6-1/8 inch U-Lock Style: Lock
I bought five of these to place on my two ebikes. Having already had four ebikes stolen I am now taking no chances. The thieves use large cutters to cut through previous locked up stolen bikes. Thin cable licks don’t work.
Reviewed in the United States on August 16, 2022 by Steve Sippel

  • A lock you can trust
Size: 7-1/4 inch U-Lock Style: Lock
Smooth operation and quality product.
Reviewed in the United States on September 8, 2022 by Lance

  • Great buy
Size: 6-1/8 inch U-Lock Style: Lock
Very sturdy!
Reviewed in the United States on September 9, 2022 by Bianca

  • Bike lock as described
Size: 7-1/4 inch U-Lock Style: Lock
It's a good lock great price
Reviewed in the United States on August 29, 2022 by Adriana Caul

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