DID 420NZ3 - Non Sealed Chain

A high-strength non-O-ring chain developed for small-displacement motorcycles and competitive racing. This component focuses on providing maximum tensile strength while keeping rotating mass as low as possible for better throttle response.

• Utilises specialised heat-treatment processes to ensure long-term structural integrity under load.
• Ideal for youth racing or pit bike applications where efficiency is more critical than seal longevity.
• Solid rollers and bushings significantly extend the service life compared to standard budget chains.
• Reinforced outer plates offer superior resistance to stretching during heavy acceleration.