The OnGuard Mastiff chain bike lock is a super tough security system for leaving your bike in public. You can walk away with peace of mind your bike will be there when you return.
Titanium enforced steel chain links are exceptionally strong against cutting and sawing type attacks. They are also strong against the use of pliers and bolt cutters. Opportunists will look for an easier target.
OnGuard’s X2P Double Bolt mechanism has been designed to resist against picking and drilling.
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE to mainland UK, regardless of the size and value.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.