Sprocket Replacement Kit For Mountain Bikes 11T And 13T Chrome Steel Sprockets Nickel Plated Hardened 9 Speed Compatible Upgrade Your Shifts With Anti Drop Design For Smooth Quick Shifts And Long Lasting Performance

Sprocket Replacement Kit for Bikes 11T & 13T 2-piece
✔️ Precision 41CrAlMo7-10 chrome steel teeth, anti-drop, 9-speed

This two-sprocket kit includes 11T and 13T gears, designed for 9-speed mountain bike drivetrains. Nickel-plated chrome steel teeth and an anti-drop profile help maintain smooth shifts and reduce chain drops on dirt trails and uphill climbs. Quick install with standard tools for an upgrade you can trust.

✅ Pack size: 2-piece set for easy upgrade
✅ Material: precision-cut 41CrAlMo7-10 chrome steel, nickel plated
✅ Hardness: 55 HRC for wear resistance and smooth shifting
✅ Anti-drop design: asymmetrical notches guide the chain on rough trails
✅ Compatibility: direct replacement for 9-speed cassettes
✅ Wear protection: deep hardening and nitriding extend life

💡 What is a mountain bike sprocket replacement kit with 11T and 13T used for?

- Handy upgrade for worn 9-speed mountain bike sprockets (11T/13T) to restore performance - Improves shifting accuracy and chain retention on dirt trails - Ideal for climbs and mixed-terrain riding - Quick swaps with basic tools