Malossi 63mm Big Bore Cylinder Kit For Yamaha NMAX155 TRICITY R15 183cc

  

Key Features: Complete cylinder kit - includes cylinder, piston, piston rings, piston pin, and circlips Restores compression and performance - replaces worn components to help bring back lost power Direct replacement - matches original bore size and mounting specifications for compatible Yamaha Blue Core engines Durable construction - built with quality materials for reliable performance under normal operating conditions Cost-effective maintenance - practical alternative to dealership repairs Installation Reminder: Allow the engine to cool and drain the oil before starting. Remove the cylinder head and old cylinder to access the connecting rod. Inspect the connecting rod, crankshaft bearings, and cylinder head for wear or damage. Cylinder Kit (Cylinder, Piston, Rings, Pin, Circlips).

Yamaha 155cc Blue Core (Liquid-cooled, 4-stroke, SOHC, VVA). This cylinder kit is compatible with the following Yamaha models. Please verify your specific model, version, and year before purchasing.

155cc version introduced in 2017; 2nd generation in 2021; 3rd generation in 2024. NVX 155 / Aerox 155. VVA engine introduced in 2017. European market from 2016; Japan from 2017; 2023 facelift.

V3 introduced in 2017; V4 introduced in 2021. Prepare the Motorcycle/Scooter - Ensure the engine is cool and the vehicle is on a stable work stand. Drain the engine oil and remove the engine top-end components (cylinder head and old cylinder) to access the connecting rod.

Inspect Related Components - Before installing the new kit, inspect the connecting rod, crankshaft bearings, and cylinder head for any signs of wear or damage. Clean Surfaces - Thoroughly clean the cylinder and crankcase mating surfaces. Remove any old gasket material or debris.

Install the piston onto the connecting rod using the new piston pin and circlips. Ensure the piston orientation mark faces the correct direction (refer to your Yamaha service manual). Install the New Cylinder - Apply a thin layer of engine oil to the cylinder bore and piston rings. Carefully slide the new cylinder over the piston, ensuring the rings do not bind or break. Use a ring compressor if needed.

Install Gaskets - Install a new base gasket between the crankcase and cylinder, and a new cylinder head gasket between the cylinder and cylinder head. Refill Oil - Refill the engine with the recommended type and quantity of oil. Break-In Period - After installation, follow a proper break-in procedure. Avoid full-throttle operation for the first few hundred kilometers to allow the new piston rings to seat properly.

Vary the engine speed during the break-in period.