EK CHAIN 420SRO O-Ring 420 Universal ChainRef : EKC00472A / 1129887032

EK CHAIN 420SRO O-Ring 420 (Ref. 420SRO-STL 146 SKJ) — a transmission chain designed for riders seeking reliability and value for money. Coming from the SRO series, this O-ring chain combines lightweight design and EK's expertise: perforated links to reduce weight, heat-treated steel alloys, and precision assembly for consistent performance on both road and off-road.

• Type: O-Ring Chain (SRO)
• Pitch: 420
• Number of Links: 146
• Color: Steel / Steel
• Weight: 0.78 kg per 100 links
• Relative Lifespan: index 1000 (for 100 links)

Designed for urban, motocross, and roadster use, the 420SRO adapts to demanding setups: sprocket, crown, and tensioner accommodate it without issue. The O-rings ensure lubricant retention and limit wear between the plates and pins, while the perforation reduces weight while maintaining the robustness needed for daily sessions or off-road outings.

Compatible with several small displacement and training motorcycles, it is particularly suitable for models such as HONDA CRF 110 F (JE02), YAMAHA YZ 85 LW BIG WHEELS, and GAS GAS MC 65. Replace your chain with a recognized reference to regain precision and transmission safety.