52T 5-Bolt 130mm BCD Steel Chainring — 3/32" 7-Speed, Dual Bashguard, Anodized Black Model: SXB5B130S-52T-SP60E Overview Heavy-duty replacement chainring engineered for reliable performance and long wear. Designed with a 5-bolt 130mm BCD interface and a 52T steel tooth ring optimized for 7-speed drivetrains (3/32" chains). The dual bashguard design protects the chain and rider clothing — ideal for city, commuting, and e-bike applications such as the Onemile Nomad Ebike. Key Features Model: SXB5B130S-52T-SP60E Mount: 5-bolt (five-arm) — BCD 130 mm Teeth: 52T (large chainring) Speed / Chain Compatibility: 7-speed (3/32" chain) Material: Steel tooth ring (black) for high wear resistance; five-arm spider and bashguards with sandblasted anodized black finish Bashguards: Dual (inner + outer) protective guards to prevent clothing entanglement and reduce chain drops Finish: Sandblasted, anodized black spider for corrosion resistance and premium appearance Designed for: Onemile Nomad Ebike and other compatible 5×130 BCD cranks Technical Specifications Model SXB5B130S-52T-SP60E Bolt Pattern 5-bolt (5×130 mm BCD) Teeth 52T Chain Width 3/32" (compatible with 7-speed chains) Material Steel tooth ring + aluminum spider / bashguard (anodized) Color / Finish Black (sandblasted, anodized spider; black steel teeth) Bashguard Dual (inner + outer) Standards European standard (metric BCD) Compatibility & Fitment This chainring fits cranks with a 5×130mm BCD and is intended for 7-speed setups using 3/32" chains. To ensure compatibility, please verify fitment before purchase: contact our Customer Support with your e-bike model, production year and batch number. Contact Onemile Support to confirm that this chainring is correct for your bike. Installation & Maintenance No installation service included. Make sure you have the required mechanical skills or arrange professional installation. When installing, inspect chainline and front-derailleur capacity — a 52T large ring requires a front derailleur that can clear the larger diameter. Use proper chainring bolts and torque values as recommended by your crank/bolt manufacturer. Typical chainring bolt torque ranges are often in the ~8–12 N·m range but refer to your crankmaker's specification . Periodically check bolts for correct torque and inspect steel teeth for wear. Steel teeth offer improved wear resistance but will still require routine inspection. Important Notices Compatibility verification: To ensure compatibility, please confirm your electric bicycle model, production year and batch number with our customer support team ( https://www.onemilebike.com/pages/contact-us ) before purchase. Carefully compare product specifications with your wide-tyre e-bike to confirm correct model selection. No installation service included: This product does not include installation service. Please ensure you possess sufficient technical knowledge to install this product correctly or obtain professional installation services. Note: If you are unsure about fitment, please contact Onemile Support with clear photos of your crank spider, bolt pattern, and drivetrain — we’re happy to help confirm compatibility.