Litelok X1 vs OnGuard RockSolid 8590: Which is Better 2026?

Litelok X1 vs OnGuard RockSolid 8590: Which Angle Grinder Resistant Lock is Right for You?

If you're researching the Best Bike locks 2026, you've likely encountered two standout names: the Litelok X1 and the OnGuard RockSolid 8590. Both have earned their place at the top of the list, boasting the coveted Sold Secure Diamond rating and innovative technologies designed to defeat the modern thief's tool of choice—the angle grinder. But with both claiming top-tier security, how do you choose? This isn't just about picking the highest-ranked lock; it's about finding the perfect balance of protection, portability, and price for your specific cycling lifestyle. In this detailed comparison, we'll dissect every aspect of these two formidable locks to help you make an informed decision and keep your bike safe in 2026 and beyond.

Quick Comparison Overview

In a nutshell, the Litelok X1 is the robust, all-round champion offering superior shackle size and a practical frame mount option, while the OnGuard RockSolid 8590 is the ultra-lightweight and compact value king, sacrificing some internal space for incredible portability. Your choice ultimately hinges on whether you prioritize maximum versatility or featherweight convenience.

Performance & Quality Comparison

Both locks are engineered to be nightmares for bike thieves, but they achieve this in different ways. The Litelok X1 uses a patented Barronium ceramic composite shackle. This material is exceptionally tough, providing significant resistance against standard angle grinder discs. It's designed as a comprehensive shield against all common theft methods, living up to its Sold Secure Diamond certification.

The OnGuard RockSolid 8590 takes a unique approach with its patented rubberized surface finish on a hardened steel shackle. This coating is engineered to cause angle grinder discs to disintegrate rapidly, effectively turning them to dust. While its 15mm shackle diameter is slimmer than the Litelok's, the composite material provides crucial compensation. However, it's worth noting that the Litelok X1's performance can be less impressive against specialized diamond-tipped discs, a consideration for the most security-conscious.

Features & Functionality Comparison

This is where the locks diverge significantly to suit different user needs. The Litelok X1 shines with its focus on practical daily usability. It includes a frame mount option (though it's often an additional purchase), allowing for secure and rattle-free transportation while you ride. This is a major convenience factor for commuters and daily riders.

The OnGuard RockSolid 8590, in contrast, prioritizes minimalism. It lacks an included frame mount, which can make transportation less convenient, typically requiring it to be carried in a bag. Its most defining feature is its compact form. It has the smallest locking area in its class, which is a double-edged sword: it makes the lock incredibly portable but may not fit around bulkier e-bike frames or larger, irregular locking points.

Price & Value Analysis

When evaluating the Best Bike locks 2026 for value, both products offer compelling propositions. The OnGuard RockSolid 8590 consistently positions itself as the most affordable option in the high-end, angle-grinder-resistant category, with a price range of $180-$220. You are getting top-tier Sold Secure Diamond protection at a very competitive price point.

The Litelok X1, priced between $200-$250, asks for a slight premium. You are paying for its larger, more versatile shackle, its reputation as a balanced all-rounder, and the availability of a dedicated mounting system. For many cyclists, the extra $30-$50 is justified by the enhanced convenience and locking flexibility the Litelok X1 provides.

Pros and Cons Side by Side

Aspect	Litelok X1	OnGuard RockSolid 8590
Key Strength	Best all-round balance of security & features	Best value & most compact design
Weight	Heavier at 3.7 lb (1.7 kg)	Exceptionally light at 2.8 lb (1.3 kg)
Locking Area	Larger, more versatile internal space	Smallest on test; may not fit all bikes/points
Transport	Frame mount option available (extra purchase)	No included frame mount
Price	$200 - $250	$180 - $220

Best Use Cases: Who Should Buy Which?

Buy the Litelok X1 if:

• You ride a larger bike, like an e-bike or cargo bike, and need a generous locking area.
• You value daily convenience and want the option to securely mount the lock directly to your bike frame.
• You want the most versatile, "do-it-all" lock that can handle a wide variety of locking scenarios securely.
• The extra weight is a secondary concern to having robust, all-round protection.

Buy the OnGuard RockSolid 8590 if:

• Every gram counts. You're a weight-conscious road cyclist, lightweight commuter, or simply hate carrying heavy locks.
• You have a standard bike frame and typically lock to standard-sized, non-bulky objects.
• Getting the absolute best price for Sold Secure Diamond protection is a top priority.
• You're happy to carry the lock in a backpack or pannier for maximum portability.

Final Verdict & Recommendation

Choosing between the Litelok X1 and the OnGuard RockSolid 8590 is a decision between two excellent but philosophically different approaches to top-tier bike security. There is no single "best" lock—only the best lock for you.

For the majority of cyclists seeking a primary, go-anywhere lock, the Litelok X1 earns its "Best All-Round" title. Its balance of formidable angle grinder resistance, practical mounting options, and a versatile shackle size makes it the more adaptable and convenient choice for diverse riding habits. It's the lock you buy once and trust for nearly every situation.

However, if your primary concerns are minimizing weight and cost without compromising core security, the OnGuard RockSolid 8590 is a phenomenal and innovative product. Its ability to deliver Sold Secure Diamond protection in such a light package at a competitive price is unmatched. It's the perfect lock for the performance-oriented rider or the budget-savvy commuter with straightforward locking needs.

Both are stellar contenders for the title of Best Bike locks 2026. Assess your typical riding routes, your bike's frame, and how you prefer to carry your gear. By aligning the lock's strengths with your personal needs, you'll make the perfect choice to protect your investment and ride with peace of mind.