Item Height: 0 Material: Strength Steel Model Name: Compatible with YFM660R, YFM660RLE (660R Limited Edition), and YFM660RSE (660R SE) OEM Specification: 5LP-15590-10-00 Special Features: Sprag Type Starter Clutch This starter clutch assembly is constructed from strength steel to withstand off-road use.Its robust build supports long-term and consistent performance.Featuring a sprag-type design, the assembly enables smooth engagement and helps reduce wear on starting system components.Designed for direct fitment on YFM660R, YFM660RLE, and YFM660RSE models, it matches OEM specification 5LP-15590-10-00 for compatibility.The unit comes fully assembled with hardened sprag rollers.Forged steel construction with induction heat-treated gear and hub enhances and supports efficient of the motorcycle's starter mechanism.