This starter solenoid relay is compatible with FZ07, FZ10, MT10, MXT850, Niken GT, YZ250F, YZ450F, WR250F, WR250R, WR250X, and WR450F motorcycles.Material: Copper and EPDM Quantity: 1 pc or 2 pcs Color: As shown in the product image Condition: Brand Features: - Made with copper and EPDM material - Enhances cranking power and reduces startup switch current - Terminal marked "B" connects to , "M" connects to motor (do not reverse polarity) - Compatible with OEM replacement numbers: 1S3-81940-00-00, 2GB-81940-00-00 Compatibility: Fits FZ07, FZ10, MT10, MXT850, Niken GT, YZ250F, YZ450F, WR250F, WR250R, WR250X, WR450F.Note: Verify part compatibility with your specific motorcycle model before purchasing.