ATHENA Big Bore Cylinder Kit Ø 63 mm, 182 cc - P400485100109 (Includes Piston and CDI)

Description

Unlock the full potential of your Yamaha MT-125 2015–2016 with the Athena Big Bore cylinder kit featuring GET Boost technology, developed to deliver a stronger, more responsive, and more enjoyable riding experience across the entire powerband.

Designed for riders who want a more engaging and capable MT-125, this kit increases engine displacement while preserving smoothness, control, and long-term reliability—making the bike more rewarding.

Enhanced performance for Yamaha MT-125

The kit includes a big bore aluminum cylinder manufactured from high-silicon aluminum alloy, to ensure excellent heat dissipation and combustion stability. A high-performance forged piston, supplied complete with piston pin and rings, is specifically engineered to match the increased bore size and optimize efficiency under load.

The result is stronger mid-range torque and quicker throttle response, translating into more immediate acceleration, improved flexibility, and greater rider confidence in real-world riding conditions.

GET Boost electronic module included

The cylinder kit is supplied with the GET Boost electronic module, developed by GET, Athena’s in-house electronics division. Preconfigured specifically for this Big Bore application, the module optimizes engine management without replacing or modifying the stock ECU, allowing the engine to fully exploit the increased displacement.

Plug & play installation and seamless integration

The GET wiring harness connects directly to the injector and throttle body connectors, ensuring quick, non-invasive installation. The dedicated GET Boost calibration delivers safe and consistent performance, with a power curve tailored to the new cylinder configuration.

Advanced Athena manufacturing technology

The forged piston is CNC-machined to reduce friction while maximizing strength and durability. The high-strength piston pin is designed to withstand increased mechanical loads, ensuring long-term reliability even under demanding use. All components are manufactured according to Athena’s proven racing-derived quality standards.

Complete kit, ready for professional installation

All required gaskets are included, making the kit ready for professional installation and accurate engine assembly within OEM tolerances.

The Athena Big Bore cylinder kit with GET Boost is the ideal upgrade for riders looking to transform their Yamaha MT-125 2015–2016 into a bike that feels more responsive, more powerful, and more satisfying to ride, without compromising durability.

CAUTION! All Athena products must be used in compliance with the specific national regulations of the member state where it is being marketed or sold. Athena declines all responsibility for any improper use.



Bullet points

• Oversized cylinder with high-performance forged piston


• Includes pre-mapped GET Boost module for easy install


• Advanced materials for superior strength and reliability


• Premium gaskets ensure perfect and lasting sealing

Technical features

• Bore Diameter (mm) 63.00


• Displacement (cc) 182


• Net Weight (Kg) 1.68

Vehicle compatibility

• YAMAHA MT 125 cc 2015/2016

Part No. 56-K176.63.CKA.N (oro2u.com)