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OnGuard Mastiff #8019

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OnGuard Mastiff #8019
Mastiff (chain, top)
Colour
Type
chain lock
Lock type
padlock
Level of protection
90/100
Length
1100 mm
Section thickness
10 mm
Weight
4760 g
Official Website
onguardlock.com
Added to E-Catalog
March 2025
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog OnGuard 2026 - new arrivals, bestsellers, and the most relevant models OnGuard.
How to Choose a Bike LockA bike lock is a simple and effective mechanism for protecting your bike from theft.

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Onguard Mastiff D14m Chain Lock

ONGUARD Mastiff D14M Chain Lock: Uncompromising Security for Your Valued PossessionsSecure your peace of mind with the ONGUAR... moreD Mastiff D14M, a formidable chain lock engineered for maximum protection against theft. Designed for cyclists, motorcyclists, and anyone needing to secure high-value equipment, the Mastiff D14M stands as a powerful deterrent, combining immense strength with user-focused features. When you need to leave your ride unattended, trust in the heavy-duty performance that the OnGuard Mastiff series is renowned for. This isn´t just a lock, it´s an investment in unparalleled security.The core of this lock´s strength lies in its robust construction. The On Guard Mastiff Chain Lock is made of 10mm ultra-hardened, titanium-reinforced steel links with a 13mm padlock. The hexagonal shape of the chain links provides a significant advantage over standard round links, as it makes it incredibly difficult for bolt cutters to get a secure grip, thwarting leverage-based attacks. This massive chain is paired with an equally impressive padlock, creating a complete security system.Key Benefits and Superior Features:* Extreme Theft Deterrence: With a high security rating, the Mastiff D14M is built to resist the most determined thieves. Its sheer size and robust materials act as a powerful visual deterrent, while its advanced engineering protects against cutting, prying, and picking.* Advanced Locking Technology: The padlock features OnGuard´s signature X4P Quattro Bolt mechanism, which secures the shackle on four sides. This provides ultimate resistance against pulling, jacking, and twisting attacks, a common weakness in lesser locks. The Z-Cylinder is bump-proof and highly resistant to picking, pulling, and drilling, ensuring the lock´s core integrity.* Protects Your Gear: The entire length of the chain is encased in a durable, embroidered nylon sleeve. This protective cover prevents the heavy-duty chain from scratching or damaging the paint and finish of your bicycle frame, motorcycle, or other secured items. Hook-and-loop tabs keep the cover securely in place.* Unmatched Convenience: Managing your security shouldn´t be a hassle. The Mastiff D14M includes 5 laser-cut keys, providing you with plenty of spares for yourself or to share with family. One of the keys features a built-in micro-light, which is invaluable for easily locating and operating the lock in low-light conditions or at night.Technical Specifications:* Product: ONGUARD Mastiff D14M Chain Lock* Category: Carriers and storage* Subcategory: Locks* Type: Padlock Chain* Security Rating: 85/100* Chain Link Diameter: 10mm hexagonal links* Chain Material: Titanium-reinforced, ultra-hardened steel* Padlock Shackle Diameter: 13mm hardened steel* Cylinder Type: Z-Cylinder, bump-proof and drill-resistant* Chain Cover: Protective nylon sleeve with hook-and-loop fastenersDon´t compromise when it comes to protecting your property. The ONGUARD Mastiff D14M chain lock offers the strength,
Bikeinn
Delivery: in United Kingdom
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£30.99
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OnGuard Mastiff Chain Lock Sold Secure Gold ON-28019-5

Performance & Use Case The Onguard Mastiff Chain Lock delivers Sold Secure Gold-rated protection - one of the highest UK lock... morestandards - with the flexibility of a chain-plus-U-lock format. The Boxer U-lock can also be used independently as a disc lock, providing two security tools in one purchase. Construction & Security The 10mm hexagonal-link chain is reinforced with titanium and made from hardened steel for high cutting and prying resistance. The chain cover protects paintwork and carries an embroidered logo that won't flake or wear off. The Boxer U-lock features the X4P Quattro Bolt mechanism for four-sided shackle locking, with the Z-Cylinder providing bump, pick and drill resistance. A 14mm hardened steel shackle resists cutting, prying and jacking. Co-moulded crossbar cover and double rubber-coated shackle protect finishes. Length & Format Available in two chain lengths: 110cm and 180cm. The 110cm secures bike to rack with the U-lock used as the closing piece; the 180cm gives reach to lock through wheels or to multiple bikes. Each variant includes 5 laser-cut keys with one LED micro-light, an embroidered chain cover, and a lifetime warranty.
Sigmasports.com
Delivery: to United Kingdom
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£39.00
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OnGuard Mastiff 8019 Chain Lock - Gold Sold Secure Rating ON-28019-5

Sold Secure Gold Rated The OnGuard Mastiff chain lock is tough security system for when you have to leave your bike in publi... morec. The super tough bike chain is 130cm long for easy locking around a range of objects. Titanium enforced steel chain links offer excellent resistance against sawing and cutting attacks as well as bolt cutters. The Z-Cylinder is bump proof and secure against picking, drilling and pulling style attacks. The OnGuard Mastiff bike lock also comes with 5 laser cut keys including one with an LED light, so you’ll always have spares. 180cm Version Longer 6’ 10mm (0.39”) titanium reinforced, hardened steel hexagonal link chain for more locking options. Hexagonal and square links present more hardened surfaces than round links making sawing and cutting virtually impossible. Titanium surface hardening vastly increase cut and saw resistance. Embroidered nylon chain covers wont crack or peel for long lasting beauty. Velcro tabs keep cover in place to help protect paint and finishes. Comprehensive selection of locks types, chain lengths and link size to exactly match security needs. Chain dimensions: 180cm x 10mmShackle diameter: 14mm Hardened steel Key Features: Automatic keyway cover, weatherproofs the lock mechanism10mm (0.39”) titanium reinforced, hardened steel hexagonal link chain resists cutting or pryingChain cover protects paint and finishes, embroidered logo won’t flake or wear offBump proof Z-Cylinder resistant to picking, pulling and drillingIncludes 5 laser cut keys, 1 with in built micro LED 110cm Version Short-shackle Boxer U-lock with X4P Quattro Bolt locking mechanism paired to a 3.5-foot long, 10mm (0.39”) titanium reinforced, hardened steel hexagonal link chain. Hexagonal and square links present more hardened surfaces than round links making sawing and cutting virtually impossible. Titanium surface hardening vastly increase cut and saw resistance. Embroidered nylon chain covers wont crack or peel for long lasting beauty. Velcro tabs keep cover in place to help protect paint and finishes. Comprehensive selection of locks types, chain lengths and link size to exactly match security needs. Chain dimensions: 110cm x 10mmShackle diameter: 14mm Hardened steel Key Features: Automatic keyway cover, weatherproofs the lock mechanism10mm (0.39”) titanium reinforced, hardened steel hexagonal link chain resists cutting or pryingChain cover protects paint and finishes, embroidered logo won’t flake or wear offBump proof Z-Cylinder resistant to picking, pulling and drillingIncludes 5 laser cut keys, 1 with in built micro LED
Tredz.co.uk
Delivery: in United Kingdom
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£39.99
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OnGuard Mastiff Chain Lock - Black 7290001280195

A short-shackle Boxer U-lock with X4P Quattro Bolt locking mechanism paired to a 3.5-foot long, 10mm titanium reinforced, har... moredened steel hexagonal link chain. Boxer U-lock can also be used alone as a disc lock. > Chain Dimensions: 110x10mm > Z-Cylinder is bump-proof and resists picking, pulling or drilling > Rounded design and centred keyway eliminates pry points > Co-moulded crossbar cover and double rubber coated shackle protects finishes > All-metal end caps provide additional protection against hits and drops > Automatic keyway covers helps seal lock internals against the elements > 10mm titanium reinforced, hardened steel hexagonal link chain resists cutting or prying > Chain cover protects paint and finishes, embroidered logo won't flake or wear off > Boxer U-lock can also be used as a disc lock > Locking Mechanism: X4P Quattro Bolt > Tumbler Mechanism: Z-Cylinder, European Type > Shackle Diameter: 14mm Hardened Steel > Keyway: Automatic Weather Resistant > Coatings: Co-moulded Crossbar Cover with Metal End Caps > Keys: 5 Laser Cut Keys, 1 With LED Micro-light > Warranty: Lifetime > Extras: Embroidered chain cover
Sportsdirect.com
Delivery: in United Kingdom
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£63.99
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OnGuard Mastiff Chain Lock Sold Secure Gold ON-28075-1

Onguard Mastiff Chain Lock Sold Secure Gold - 180cmx10mm The Onguard Mastiff Chain Lock 180 cm x 10 mm is rated Sold Secure... moreGold and offers robust protection with a versatile design. It pairs a short-shackle Boxer U-lock featuring the X4P Quattro Bolt locking mechanism with a 180 cm long, 10 mm titanium-reinforced, hardened steel hexagonal link chain. The Boxer U-lock can also be used independently as a disc lock, providing flexible, high-security protection for bikes and vehicles.
Sigmasports.com
Delivery: to United Kingdom
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£69.00
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Series OnGuard Mastiff (chain, top)Compare using chart →
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Bike Lock OnGuard Mastiff #8019