DID 520DZ-120 520 Non-O-Ring Racing Chain — Gold/Black, 120 Links, 7,870 lb Tensile

The DID 520DZ-120 is a budget-conscious, high-performance non-O-ring racing chain built for motocross and ATV use up to 450cc, finished in gold outer plates with black inner links and supplied with a clip-style master link.

Designed for riders who demand durability on rough tracks without the premium price of sealed chains, this DZ2-series link set balances strength, serviceability, and race-ready styling. Its 120-link length fits a wide range of drivetrain layouts, while the SDH-enhanced construction helps withstand impacts and repeated loading common in off-road racing.

How strong is the DID 520DZ-120 and what machines can it handle?

The chain is rated to a tensile strength of 7,870 pounds, making it suitable for most motorcycles and ATVs with engine displacements up to 450cc. That rating reflects the maximum static tensile load the assembly can resist before failure, giving riders a quantifiable measure of robustness.

• Rated tensile strength: 7,870 lb
• Recommended for motorcycles and ATVs up to 450cc
• Standard 520 pitch fits common sport and off-road sprockets
• 120-link length adjustable by removing links to fit specific setups

Why choose a non-O-ring DZ2 chain for racing or aggressive trail use?

Non-O-ring chains forego internal sealing rings to reduce friction and allow straightforward maintenance and repair in the field. The DZ2 variant targets riders who prioritize serviceability and light frictional loss over the extended lubrication life provided by O-rings.

• Lower friction between rollers and plates for slightly improved efficiency
• Easy to clean, inspect, and repair during race days or trail rides
• Durable SDH-treated links to resist bending and impact damage
• Clip-style master link simplifies on-bike installation and removal

What are the visual and practical design features of this chain?

The chain pairs gold outer plates with black inner links for a high-contrast, race-inspired look that complements many bike color schemes. Beyond aesthetics, the finish provides surface protection and helps identify wear patterns during routine inspections.

• Gold outer plates for distinctive styling and surface durability
• Black inner links for contrast and easier wear detection
• Finish helps resist light corrosion between services
• Clip-style master link included for quick assembly

How should I maintain and fit the 520DZ-120 chain to maximize life?

Regular cleaning, proper lubrication, and correct tensioning are key to reliable performance; non-O-ring chains require more frequent attention than sealed types. Installation should match the bike’s manufacturer specifications for slack and alignment to prevent premature wear.

• Clean grit and mud after off-road sessions to avoid abrasive wear
• Apply appropriate chain lube to rollers and pins after cleaning
• Set chain slack and alignment per your motorcycle/ATV manual
• Inspect master link and clip retention periodically for safety

Who is this for? The DID 520DZ-120 is aimed at motocross competitors, weekend trail riders, and ATV enthusiasts who want a race-capable non-O-ring chain that’s affordable, serviceable, and visually striking. If you value easy trackside repairs, lower frictional loss, and a strong tensile rating for bikes up to 450cc, this chain offers a practical balance of performance and cost. For riders who prefer sealed chains for longer service intervals, consider DID’s O-ring options instead.