Motorcycle Engine Parts Piston Rings Kit Bore STD Size 75mm ~ 75.5mm For CBR1000RR CBR1000 CBR 1000 Motor Material Type: Nodular Cast Iron Model Name: 13103-MEL-010, 13031-MEL-010 Bore Size: STD, +25, +50 Diameter: 75mm, 75.25mm, 75.50mm Certification: ISO9001 Fitment: CBR1000RR 2004-2007 This piston rings kit is designed for use with CBR1000RR models from 2004 to 2007.Constructed from nodular cast iron, the rings are engineered to support engine performance under demanding operating conditions.The kit includes options for STD, +25, and +50 bore sizes, with diameters of 75mm, 75.25mm, and 75.50mm, allowing compatibility with various engine rebuild requirements.The product meets ISO9001 standards, consistent manufacturing quality.It is intended as a direct replacement for components, supporting proper sealing and compression in the engine cylinder.This kit is suitable for riders and mechanics performing engine maintenance or performance on applicable CBR1000RR motorcycles.