Piston YMH-K（扩缸）

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Product Description

Piston MODEL YMH-K

Product Detail

Model	YMH-K
CYL DIA	54
TOTAL HIGH	34.7
COMP DIST	19.2
RING	0.80.82.0
PIN DIA	13
PIN LENGTH	41

High-Performance Bore-Up Piston YMH-K: Premium Engine Part for Motorcycle & Tricycle

Introduction: The Game-Changer in Bore-Up Engine Parts

Why Bore-Up Pistons Matter for Engine Performance

As a critical component of engine parts, the piston is the backbone of power generation in motorcycle and tricycle engines. For enthusiasts and commercial operators seeking enhanced performance, a bore-up piston like the YMH-Kmodel is a transformative upgrade. Unlike standard pistons, bore-up designs optimize cylinder displacement to unlock more power, while maintaining reliability—making them a top choice for those looking to boost acceleration, torque, and overall engine capability. Investing in high-quality motorcycle parts and tricycle parts such as the YMH-Kpiston ensures that your engine not only performs better but also stands up to the demands of enhanced power output.

Product Overview: Piston YMH-K

Designed exclusively as a bore-up solution, the YMH-Kpiston is a specialized engine part engineered to meet the rigorous requirements of modified and high-performance engines. Crafted with advanced CNC machining, premium materials, and exacting specifications, this piston delivers seamless fitment, exceptional durability, and a significant performance upgrade for compatible motorcycles and tricycles. Whether you’re a rider looking to enhance your bike’s power or a commercial operator needing more torque for heavy loads, the YMH-K piston is the ideal choice. Below, we detail its key specifications, design advantages, and versatile applications to help you make an informed decision.

Key Specifications of Piston YMH-K: Precision Engineered for Bore-Up Performance

Model Specificity: YMH-K

The piston is tailor-made as a bore-up upgrade for YMH-K compatible models, ensuring 100% compatibility with modified engine setups. Unlike generic engine parts that may fail under increased displacement, the YMH-K piston is engineered to handle the higher pressure and power output of bore-up engines. This specificity eliminates fitment issues, reduces the risk of engine damage, and guarantees that your modified engine operates at its peak potential. Whether you’re upgrading a personal motorcycle or a commercial tricycle, the YMH-K piston is a reliable, purpose-built solution for your engine parts needs.

Critical Dimensions for Bore-Up Excellence

Every dimension of the YMH-K piston is calibrated with meticulous precision to optimize bore-up performance:

CYL DIA (Cylinder Diameter): 54mm – The expanded diameter (a key bore-up feature) increases cylinder displacement, unlocking more power while maintaining a tight seal with the cylinder wall.
TOTAL HIGH (Total Height): 34.7mm – Optimizes vertical movement within the modified cylinder, balancing mechanical stress and power delivery for smooth, consistent operation.
COMP DIST (Compression Distance): 19.2mm – Fine-tunes the engine’s compression ratio for bore-up setups, enhancing torque production and preventing detonation under increased power.
Piston Ring Specifications: 0.8*0.8*2.0mm – A triple-ring configuration (two compression rings + one oil control ring) delivers superior sealing, critical for managing higher combustion pressure in bore-up engines.
PIN DIA (Piston Pin Diameter): 13mm – Provides robust support for the piston pin, ensuring stable power transmission to the connecting rod even under elevated stress.
PIN LENGTH (Piston Pin Length): 41mm – Offers an optimal contact area with the connecting rod, distributing load evenly to minimize wear in high-performance scenarios.

Wide Application Range: Versatile Bore-Up Performance
Motorcycle Applications
The YMH-K piston is perfectly suited for YMH-K compatible motorcycles, including sport bikes, commuter bikes, and off-road motorcycles undergoing bore-up modifications. It enhances performance by increasing displacement, delivering stronger acceleration (0-60km/h up to 15% faster than stock) and higher top speed. Whether you’re a rider seeking more power for track days or a commuter needing better torque for hills, the YMH-K piston elevates your motorcycle’s capabilities.
Tricycle Applications
For tricycles equipped with YMH-K engines and modified with bore-up kits, the YMH-K piston is a rugged, reliable choice for heavy-duty use. Tricycles used for cargo or passenger transport often benefit from bore-up upgrades to handle increased loads, and this piston’s durability and power-enhancing design ensure stable performance even when carrying maximum payloads (up to 650kg). It maintains consistent power output on rough terrain and during long journeys, making it ideal for commercial tricycle operators.