【Tricycle】- Vivian Tian        +86-186-2330-4355      VivianTian86@hotmail.com               【Spare Parts】- Hamble       +86-166-2336-3392        motor4@kainiugroup.com
Piston TY125
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Piston TY125

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Piston MODEL TY125


Product Detail



ModelTY125
CYL DIA56.5
TOTAL HIGH55
COMP DIST26
RING1.2*1.2*2.5
PIN DIA15
PIN LENGTH47.5

Rugged Performance Piston TY125: Premium Engine Part for Motorcycle & Tricycle

Introduction: The Backbone of TY125’s Reliable Engine Performance

Why Pistons Are Critical in TY125’s Engine Parts System

As a core component of engine parts, the piston is the "power core" of the TY125 model—engineered to withstand heavy loads, frequent use, and harsh operating conditions. Designed for both utility and performance, the TY125 relies on a piston that balances torque, durability, and fuel efficiency to meet the demands of riders and commercial operators alike. A substandard piston compromises the engine’s output, leads to frequent breakdowns, and increases maintenance costs, while a precision-engineered piston like the TY125 model upholds the vehicle’s reputation for ruggedness and consistency. For motorcycle enthusiasts, daily commuters, and tricycle fleet managers, investing in high-quality motorcycle parts and tricycle parts such as the TY125 piston is essential to maximizing engine performance and longevity.

Product Overview: Piston TY125

Crafted exclusively for the TY125 engine, this piston is a specialized heavy-duty engine part that merges advanced materials, precision machining, and model-specific design. Built to match the TY125’s high-torque engine specifications, it delivers seamless fitment, exceptional durability, and enhanced power—whether you’re navigating rough terrain, hauling cargo, or transporting passengers. Whether you’re replacing a worn piston, upgrading your engine, or maintaining a fleet of commercial vehicles, the TY125 piston is the trusted choice for reliability and performance. Below, we detail its key specifications, design advantages, and versatile applications to help you make an informed purchasing decision.


Key Specifications of Piston TY125: Precision Engineered for Heavy-Duty Use

Model Specificity: TY125

The piston is tailor-made for the TY125 model, ensuring 100% compatibility with the engine’s original design parameters. Unlike generic engine parts that require modifications or fail to withstand the TY125’s load-bearing demands, this piston is engineered to replicate the model’s exact dimensions and performance requirements. This specificity eliminates installation hassles, reduces downtime, and guarantees that your TY125 engine operates at its factory-calibrated peak—whether powering a motorcycle or a utility tricycle. For owners and operators relying on the TY125’s workhorse capabilities, the TY125 piston is a reliable, drop-in solution for your engine parts needs.

Critical Dimensions for Uncompromising Function

Every dimension of the TY125 piston is calibrated with meticulous precision to handle heavy-duty use while delivering optimal performance:
  • CYL DIA (Cylinder Diameter): 56.5mm – Optimizes displacement for maximum torque output, while maintaining a tight, leak-proof seal with the cylinder wall to enhance combustion efficiency and power delivery.

  • TOTAL HIGH (Total Height): 55mm – Increased height enhances structural rigidity, supporting the piston’s ability to withstand high combustion pressures and heavy loads (up to 680kg) without deformation.

  • COMP DIST (Compression Distance): 26mm – Fine-tunes the engine’s compression ratio for balanced power and fuel efficiency, ensuring responsive acceleration across all RPM ranges—critical for both riding and hauling.

  • Piston Ring Specifications: 1.21.22.5mm – Heavy-duty triple-ring configuration (two compression rings + one oil control ring) with thick cross-sections delivers superior sealing, reduces oil consumption, and prevents carbon buildup in high-heat, high-cycle operation.

  • PIN DIA (Piston Pin Diameter): 15mm – Reinforced pin diameter provides exceptional load-bearing capacity, ensuring stable power transmission to the connecting rod even under extreme stress.

  • PIN LENGTH (Piston Pin Length): 47.5mm – Extended length distributes load evenly across the connecting rod, minimizing wear and extending the piston’s service life in heavy-duty scenarios.

Superior Quality Materials: Built to Endure Harsh Conditions

High-Grade Material Composition

The TY125 piston is forged from high-strength 2017A aluminum alloy with 11.5% silicon reinforcement—selected for its exceptional tensile strength, heat resistance (up to 400°C), and resistance to thermal deformation. This material is specifically chosen to handle the TY125’s high combustion pressures and frequent use in diverse climates, from hot deserts to humid tropical regions. Additionally, the piston surface features a hard-anodized coating with molybdenum disulfide (MoS2) infusion, which enhances wear resistance by 36%, reduces friction by 30%, and improves heat dissipation—critical for maintaining performance in long-distance rides and heavy-load transport.

Benefits of Premium Materials for TY125 Users

The use of top-tier materials translates to tangible advantages that align with the TY125’s use cases:
  • Extreme Durability: Resists corrosion, mechanical fatigue, and thermal expansion, extending the piston’s service life to 90,000km—ideal for commercial operators seeking long-term reliability and reduced replacement costs.

  • Enhanced Heat Management: Efficiently dissipates heat generated by heavy-duty operation, preventing engine overheating—a common concern for tricycle operators and riders in high-temperature environments.

  • Consistent Performance: Maintains dimensional precision over time, ensuring stable torque output and fuel efficiency even after years of high-cycle use.

Precise Manufacturing Process: Craftsmanship for Heavy-Duty Reliability

Advanced Production Technology

The TY125 piston is manufactured using state-of-the-art 5-axis CNC machining with high-precision cutting tools, achieving dimensional accuracy within ±0.002mm—surpassing industry standards for heavy-duty engine parts. This precision ensures the piston’s thick-ring design and reinforced structure fit seamlessly with the TY125’s engine block, eliminating compatibility issues. The production process also includes a specialized T6 heat treatment and stress-relief annealing, which strengthens the aluminum alloy and eliminates internal stresses—critical for withstanding the TY125’s high combustion pressure and load-bearing demands.

Strict Quality Control Measures

Every TY125 piston undergoes rigorous quality control inspections tailored to heavy-duty performance:
  • Raw Material Testing: Ensures the 2017A aluminum alloy meets aerospace-grade standards for strength and heat resistance.

  • Dimensional Accuracy Checks: Verifies critical dimensions (CYL DIA, TOTAL HIGH, etc.) using laser measuring tools to match the TY125’s exact tolerances.

  • Pressure & Fatigue Testing: Simulates the TY125’s operating conditions (up to 16.5 bar pressure and 15,000 cycles) to assess sealing performance and resistance to mechanical fatigue.

  • Ring Groove Precision Checks: Ensures the piston’s ring grooves are machined to exact specifications, guaranteeing a tight fit with the thick piston ring set and preventing oil leakage.

Wide Application Range: Versatility of the TY125 Piston

Motorcycle Applications

The TY125 piston is the ideal replacement for TY125 motorcycles, including utility bikes, off-road motorcycles, and light-duty cargo bikes. It restores the engine’s original torque and power, ensuring smooth performance for daily commutes, long-distance rides, and off-road adventures. For motorcycle enthusiasts seeking a durable, high-performance piston, the TY125 model delivers the reliability and responsiveness needed for diverse riding scenarios—from city streets to rugged trails.

Tricycle Applications

For tricycles powered by the TY125 engine (a popular choice for commercial passenger and cargo transport in Asia, Africa, and Latin America), the TY125 piston is a rugged, workhorse solution. Tricycles equipped with the TY125 engine face heavy loads (up to 680kg), rough terrain, and daily high-cycle use, but this piston’s thick-ring design and reinforced structure ensure stable performance. It operates reliably in extreme conditions—from dusty rural roads to congested urban streets—making it a top choice for commercial tricycle operators seeking to minimize downtime and maximize profitability.

Compatibility with Other Engine Parts: Seamless Integration

Perfect Match with TY125 Piston Ring

The TY125 piston is engineered to work seamlessly with its  piston ring set (1.21.22.5mm), which is specifically designed for the model’s heavy-duty requirements. The piston’s ring grooves are precision-machined to match the thick rings, ensuring a tight seal that prevents gas leakage and oil consumption—critical for maintaining the TY125’s efficiency and power. The piston ring’s high-carbon steel construction with chrome-nitride coating complements the piston’s aluminum alloy, creating a durable pairing that withstands high-cycle operation and harsh conditions.

Compatibility with TY125 Engine Components

Beyond the piston ring, the TY125 piston is fully compatible with all original equipment (OE) engine parts of the TY125 model, including the connecting rod, crankshaft, and cylinder head. Its precise dimensions ensure seamless integration with these components, eliminating the need for modifications or adjustments. This compatibility makes it an ideal choice for mechanics and DIY enthusiasts, as it simplifies installation and guarantees factory-level performance. Whether you’re a professional mechanic or a hobbyist, the TY125 piston is easy to install and works perfectly with your TY125 engine.



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【Tricycle】 - Vivian Tian
 Email: VivianTian86@hotmail.com
 WhatsApp: +86-173-8479-7166
Tel: +86-186-2330-4355
【Spare Parts】 -Hamble
 Email: motor4@kainiugroup.com
 WhatsApp: +86-152-2358-9673
Tel: +86-166-2336-3392
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