SKU:227211
The latest-generation Yamaha YZ 125 sets the benchmark in the 125cc segment, featuring a powerful engine, responsive chassis, and precise power management. To further enhance these characteristics, Athena introduces the new Standard Bore Racing Cylinder Kit, an advanced solution designed to optimize engine performance with race-proven components engineered for maximum power output.
High-Performance Cylinder
At the core of this kit is a high-performance aluminum cylinder, featuring precision-machined intake and exhaust ports for optimized gas flow and improved combustion efficiency. These modifications enhance power delivery, ensuring instant throttle response and increased performance across the entire RPM range. The advanced design minimizes turbulence, maximizing engine efficiency and thermal stability during high-intensity riding sessions.
Racing Head with Modular Bronze Insert
To ensure superior thermodynamic efficiency, the kit includes a racing head with a modular bronze insert, engineered for optimal heat dissipation and enhanced resistance to high temperatures. The combustion chamber geometry has been specifically designed to increase the velocity of the air-fuel mixture, resulting in smoother power delivery and improved reliability under extreme conditions.
Lightweight Single-Ring Piston with Oil Dots
The kit features a lightweight single-ring piston, designed to reduce reciprocating mass and improve engine responsiveness. The Oil Dot technology optimizes lubrication, reducing friction and extending component longevity. This results in smoother piston movement, improved mechanical efficiency, and enhanced power output with superior wear resistance.
Advantages of the Athena Standard Bore Racing Cylinder Kit
Superior Performance – Optimized port design for improved power delivery and throttle response.
Advanced Heat Dissipation – Modular bronze insert for optimal thermal management.
Lightweight & Efficient – Single-ring piston with Oil Dot technology for reduced friction and increased efficiency.
Durability & Reliability – Components engineered to withstand extreme racing conditions.
Perfect Fitment – Precisely manufactured for seamless compatibility with OEM components.
A Race-Ready Cylinder Kit
The Athena Standard Bore Racing Cylinder Kit is the ultimate choice for riders seeking maximum performance from their Yamaha YZ 125 without compromise. Featuring cutting-edge design and high-quality materials, this kit provides a significant upgrade over stock components, ensuring smoother power delivery, increased horsepower, and enhanced durability under the most demanding conditions.
Trust Athena technology to take your Yamaha YZ 125 to the next level and dominate the track with true racing performance.
Optimized port design for improved power delivery and throttle response.
Modular bronze insert ensures superior heat dissipation and thermal stability.
Lightweight single-ring piston reduces friction and enhances engine efficiency.
Race-proven durability for extreme performance and long-lasting reliability.
Bore: 54.00mm
Compression: 15.0:1
Displacement: 124cc
The Athena Yamaha YZ 125 Racing Stock Bore Cylinder Kit (Part No. P400485100102) is engineered for high-performance motocross applications, offering reliable power and durability. Crafted with precision, this kit is designed specifically for Yamaha YZ 125 models from 2022 to 2025, ensuring a perfect fit and optimal engine performance. The kit includes a high-quality cylinder that meets OEM specifications, providing a seamless upgrade for riders seeking enhanced engine efficiency and power output. Crafted from durable materials, the cylinder ensures longevity even under rigorous racing conditions, making it a trusted choice for serious motocross enthusiasts.
This cylinder kit features a stock bore size, maintaining the engine's original dimensions to preserve the bike's handling characteristics. The assembly is straightforward to install, allowing for quick maintenance and repair. Whether you're rebuilding your bike or upgrading for competitive racing, this Athena cylinder kit offers a reliable solution that adheres to strict quality standards. Its components are designed to withstand the stresses of high RPM operation, ensuring consistent performance over time.
Ideal for racers and enthusiasts alike, the Athena Yamaha YZ 125 Racing Stock Bore Cylinder Kit enhances your motorcycle's overall engine efficiency and power delivery. The kit's precise engineering and durable construction make it a dependable choice for those looking to maintain or improve their bike's performance in demanding riding environments. Trust Athena’s reputation for quality and precision to keep your Yamaha YZ 125 performing at its best.
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