OEM PART NUMBERS:
• Yamaha: 5UP-11400-00-00 / 5UP1140000 (Original)
• Yamaha: 5UP-11400-10-00 / 5UP1140010 (Supersession)
• MPN: HR4138
SPECIFICATIONS:
• Type: Complete Crankshaft Assembly
• Kit Contents: Crankshaft + Connecting Rod + Top End Bearing
• Construction: Factory Assembled and Trued
• Material: Heavy-Duty Forged Steel
• Finish: Copper Plated, Case Hardened
• Heat Treatment: Heat Treated for Durability
• Machining: CNC Machined to OEM Tolerances
• Engine: 249cc 2-Stroke Single-Cylinder
• Induction: Reed-Valve with YPVS
• Note: Main Bearings and Seals Sold Separately
• Condition: New
APPLICATIONS:
• Yamaha YZ250 2-Stroke Motocross Motorcycle (2003-2025)
• Yamaha YZ250X 2-Stroke Cross-Country (2016-2025)
• Yamaha YZ250 50th Anniversary Edition (2024)
• Yamaha YZ250 Monster Energy Yamaha Racing Edition (2022-2025)
• Does NOT fit YZ250F 4-Stroke (different engine platform)
• Does NOT fit YZ250FX 4-Stroke (different engine platform)
PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.
WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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