Yamaha Genuine XT125 Engine Cylinder Block / Cylinder Jug 25A-11310-00

Product Description

Brand new official Yamaha factory engine cylinder block designed for classic vintage 125cc four-stroke dual-sport motorcycles. Precision-cast and machined to exact factory metallurgical tolerances with proper cylinder wall cross-hatch finish and cooling fin layout, engineered to restore factory compression, thermal stability, and reliable power output during a complete top-end engine overhaul.

Vehicle Compatibility

Engineered explicitly for Yamaha classic air-cooled four-stroke single-cylinder dual-sport and trail platforms.

Verified catalog fitment layout:

Fitment & Technical Details

Inspect the cylinder bore diameter, cross-hatch pattern, and deck surfaces for absolute cleanliness prior to installation. Ensure the crankcase mating surface is completely free of old gasket residue. Guide the cylinder carefully over the piston rings, ensuring proper ring end-gap positioning and ring-groove pin alignment, then seat squarely down onto the crankcase studs without forcing.Verification: Slides smoothly over the piston assembly down to the crankcase base with zero binding, providing an airtight seal for the combustion chamber under high-compression operating temperatures.

Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!

At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.

Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.

We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.

Shipping Information

We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.

Please note:

• All parts are shipped from Cyprus (Europe).
• Customers outside the EU may incur additional import taxes based on the value of the item.