EK CHAIN JT 420SH 11/53 - Standard Rear Sprocket Chain kitRef : EKC03144A / 3067812

Replace your transmission system with a robust, ready-to-install kit: EK 420SH (O-ring) chain combined with an 11-tooth front sprocket and a 53-tooth rear sprocket made of JT steel. Designed for urban use and lightweight machines, this kit offers a simple and reliable solution to maintain the engine/wheel connection in good condition.

• Chain: EK 420SH (O-ring)
• Pitch: 420
• Number of Links: 130
• Roller Width: 6.35 mm
• Tensile Strength: 8,000 N (suitable for up to ~30 HP)
• Weight: 0.91 kg / 100 links
• Sprocket: Steel, 53 teeth (standard)
• Pinion: Steel, 11 teeth
• Color: Steel / Steel
• Relative Lifespan Index: 200 (reference 100 links)

The O-ring technology ensures internal lubrication and limits dirt ingress, making it practical for daily urban use or short rides. The machined teeth are designed to fit with the chain, ensuring a clean engagement and consistent power transmission.

• DERBI SENDA 50 SM DRD RACING (2008)
• DERBI SENDA 50 R DRD RACING (2008)
• DERBI SENDA 50 R DRD (2008)

Mechanic's Tip: Check the pitch, desired final ratio, and the condition of the guides/tensioners before installation. Replace the pinion, sprocket, and chain in one operation for optimal adjustment and consistent usage duration.