Material: Forged Steel OEM Numbers: 5VL-E5517-00-00, 4FP-E5580-00-00, 1BK-E5580-00-00 External Testing Certification: ISO9001 Special Features: Direct replacement of parts Applicable Models: TT-R125LE, TT-R125, TTR125, XT125R, XT125X, YB125, YBR125ED, YFM125R Displacement: 329/499 ml Number of Cylinders: 1 Cylinder The Motorcycle Bearing Starter Clutch Gear Assy is constructed from forged steel to support under regular use.Designed as a direct replacement, it installs using standard procedures without requiring modifications.The unit is certified under ISO9001, indicating compliance with defined quality standards.It is compatible with a range of models including TT-R125LE, TT-R125, TTR125, XT125R, XT125X, YB125, YBR125ED, and YFM125R, serving both urban and off-road applications.Routine maintenance supports continued as part of standard motorcycle upkeep.Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.