EK CHAIN PBR 420SR 11/52 - Standard Rear Sprocket Chain kitRef : EKC03132A / 3067770

EK/PBR 420SR Chain Kit 11/52 - Standard Sprocket

This final drive kit includes the EK 420SR chain (non O-ring), a PBR steel front sprocket, and a standard steel rear sprocket — the ideal combination for urban use and light off-road applications. Designed for small displacement machines, it focuses on simplicity, robustness, and reliable transmission without frills.

• Type: EK 420SR chain (non O-ring)
• Pitch: 420
• Number of Links: 126
• Sprocket / Sprocket: 11 teeth / 52 teeth (standard sprocket)
• Tensile Strength: 6,500 N (suitable for up to ~25 HP)
• Roller Width: 6.35 mm
• Weight: 0.75 kg for 100 links
• Color: Steel / Steel
• Relative Lifespan: 200 (for 100 links)

• Durability: Steel sprocket and rear sprocket for good longevity in daily use.
• Ease of Maintenance: Chain treated with a special coating, easy to clean and lubricate.
• Complete Replacement: Entire final drive provided for a clean installation and optimal tension adjustment.

Check compatibility with your model before installation. Ideal for small displacement bikes like RIEJU MRX 50, SMX 50, and MRX 50 PRO. After installation, check and adjust the tension, and regularly maintain the chain to preserve the longevity of the final drive.