SuperProx 420SO Steel x 138 links - Supersprox 420SO Chain (Steel) x 138 links. ChainRef : SUP00020A / 541011381

420SO Steel Chain x 138 links - Supersprox 420SO Chain (Steel) x 138 links. by SuperProx

The 420SO steel chain is designed for versatile use on both road and off-road. O-ring seals and semi-pressed link for preserving lubrication and facilitating installation. Sized for setups requiring 138 links and engines up to 18 hp.

Design and materials

• Steel/Steel construction providing good wear resistance for measured longevity
• Thickness of inner and outer plates is 1.5 mm for a robust transmission structure
• O-ring seals ensuring improved sealing and better retention of internal lubricant
• Pin length of 18.6 mm facilitating link assembly during installation

Practicality and features

• Chain length of 138 suitable for setups requiring this dimension for precise fitting
• Semi-pressed link for reliable and simple assembly
• Corresponding link 541019991 Quick Link 420-SO Clip included in the list of compatible references

Usage and performance

• Tensile strength of 17 kN and P.max 18 hp, suitable for engines up to 18 hp
• Designed for off-road use such as Motocross and Enduro while remaining suitable for urban and supermoto applications

Advantages

• OEM Reference CHA-420-S-O-138
• Steel/Steel colour for a discreet and universal appearance
• Gross weight: 1.45 facilitating handling during installation

Examples of compatible motorcycles

• RIEJU MRT 50 2T SM TROPHY LC CARB E5+ 50 (2026)
• YAMAHA TZR 50 2T LC CARB 50 (2012)
• MBK X-POWER 50 2T LC CARB E3 50 (2012)

Complete list of compatible motorcycles available in the dedicated section below