Motorcycle Sprocket Set Brand: Top Pro Racing Usage: TMX155, TMX125 42T/14T/428HX110L Includes: Rear Sprocket 42T Engine Sprocket 14T Roller Chain 428H x 110L Thank you for considering our product. Please consider giving us 5-stars if you are happy with our product and our service. .............. FAQs: 1. Is this compatible with TMX125 and TMX155? A: Yes (engine sprocket is not for alpha) 2. Is the chain stainless? A: No but the quality is good