Application fit for Honda NQ50 Spree 1984-1987 OE/Part number 12101-GK8-000, 12251-GN2-000, 12191-GK8-010, 12101GK8000, 12251GN2000, 12191GK8010 Specification Material: Iron Type: Cylinder Piston Kit Cylinder bore and stroke: 41.00mm x 37.40mm Cylinder Displacement: 49cc / Compression Ratio 7.2:1 Cilinder bolt hole centres: 48mm. (bolt hole diameter is 7mm) Piston pin diameter: 10mm. Exhaust flange bolt centres: 46mm. Exhaust hole: 30mm The diameter fit for the bolt hole to adapt Exhaust: 5mm Bore extension into crank case: 37mm. O/d of bore extension: 51mm Features OEM-Level Quality, Cost-Effective Maintenance 100% Brand New Components: Rigorous factory inspections eliminate risks of used/counterfeit parts, restoring factory performance at a fraction of the cost. Time-Saving & DIY-Friendly Complete Kit + Precision Design: Enables hassle-free installation fit for DIYers – no professional tools or expertise required. Extended Engine Lifespan High-Rigidity Materials & Precision Engineering: a. Notice 1. California Prop 65 Warning 2. Authority ID：MXR02FXSY（Very important, please do not delete）

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