The DID 428 NZ DHA chain represents the top tier of non-O-ring 428 performance. Designed specifically for competitive karting and small-displacement motorsports, it combines lightweight construction with advanced metallurgy for superior wear resistance and strength.
At the core of the NZ Series is D.I.D.’s exclusive DHA pin treatment — a hard chromium-carbide layer formed on the pin surface. This significantly improves wear resistance compared to standard chains and helps maintain consistent chain stretch characteristics over time.
With tensile strength rated at 5,740 lbs — up to 19% higher than many standard 428 chains — the NZ DHA is built to withstand the shock loads of aggressive shifting and high-output engines.
Unlike sealed chains, the non-O-ring design minimizes rotating mass and friction, making it ideal for sprint and shifter kart racing where throttle response matters.
Key Features:
• DHA Pin Treatment – Hard chromium-carbide layer for superior wear resistance
• 5,740 lb Tensile Strength – Up to 19% higher than many standard 428 chains
• Solid Bushings & Quad-Riveted Pins – Strength and stability at high RPM
• Lightweight Non-O-Ring Design – Reduced drag for racing performance
• Enhanced Corrosion Resistance – Improved antioxidation properties
• Includes Clip-Style Master Link
• NZ Master Link Note – Interference fit design; chain press recommended (can be honed for easier install)
• 60 Link Length – Can be shortened to suit gearing. Spare MASTER LINKS available separately.
• Weight of 60-Link Chain: Approx. 21 oz
Best For:
• Competitive sprint kart racing
• 125cc shifter applications
• High RPM, high shock-load environments
• Racers wanting premium non-O-ring performance
The DID 428 NZ DHA is the premium performance option in the 428 lineup — stronger and more wear-resistant than standard heavy-duty chains, while maintaining the low drag characteristics serious racers demand.
