Material: Aluminum Bore Diameter: 77mm Engine: ZS174MN-5 Model Name: NB350 Cylinder Kit Weight: 2103g Quantity: 1 Kit Fitment: For NB300 (ZS174MN-5) Engine Compatibility: NB300 to NB350 Conversion Kit Performance: Upgraded from 300cc to 350cc The Motorcycle Accessories ZS174MN-5 Engine Cylinder Kit is designed to upgrade the NB300 engine to a higher displacement NB350 configuration.This conversion kit includes a 77mm bore diameter cylinder block, a performance piston, piston rings, gaskets, and a piston pin, providing all necessary components for the engine rebuild. Constructed from aluminum , the cylinder kit offers strength and efficient heat dissipation during.The 77mm bore increases engine displacement, contributing to improved power output.The kit uses -engineered piston rings that help maintain compression and reduce wear.At 2103 grams, the assembly balances lightweight design with structural integrity. Designed for straightforward installation, this kit supports the transition from NB300 to NB350 specifications.It suits both experienced mechanics and skilled enthusiasts performing engine.The silver and black finish provides a clean, functional appearance that integrates well with standard engine bay aesthetics.This cylinder kit is intended for riders seeking increased engine performance through displacement upgrade. This is a non-OEM replacement.Any mention of brand names is strictly for compatibility clarification.