EK CHAIN 420SRO O-Ring 420 Universal ChainRef : EKC00470A / 1129887030

EK CHAIN 420SRO O-Ring 420 — Ref: 420SRO-STL 142 SKJ

The EK 420SRO transmission chain is designed for urban, cross, and roadster use where durability and simplified maintenance are sought. The SRO series offers a cost-effective O-Ring solution without compromising EK's meticulous manufacturing processes: perforation to lighten the part, thermally treated steel alloys, and precision design for reliable fitting between sprocket and crown.

• Type: O-Ring chain (420)
• Manufacturer reference: 420SRO-STL 142 SKJ
• Number of links: 142
• Pitch: 420
• Color: Steel / Steel
• Weight: 0.78 kg / 100 links
• Relative lifespan (for 100 links): 1000

Designed for the final drive of small displacement and lightweight motorcycles, this chain is suitable for both recreational use and more engaged practices. Maintain proper tension and lubrication according to recommendations to extend longevity. Examples of common installations:

• HONDA CRF 110 F (JE02) — 2026
• YAMAHA YZ 85 LW BIG WHEELS 19/16 (CB10) — 2026
• GAS GAS MC 65 — 2025