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Piston CH125
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Piston CH125

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Piston MODEL CH125


Product Detail



ModelCH125
CYL DIA52.4
TOTAL HIGH39.3
COMP DIST22.3
RING1.0*1.0*2.0
PIN DIA15
PIN LENGTH41.5

High-Performance Piston CH125: Top-Tier Engine Part for Motorcycle & Tricycle


Introduction: Unveiling the Piston CH125

In the competitive landscape of engine parts, the piston serves as the "dynamic core" of combustion—converting fuel energy into mechanical motion that powers motorcycles and tricycles. The Piston CH125 emerges as a premium choice for 125cc systems, engineered to excel as both motorcycle parts and tricycle parts. Unlike generic pistons that cut corners on fit and durability, the CH125 is calibrated to meet the exact demands of 125cc engines, ensuring seamless integration with critical components like piston rings and cylinder walls. Whether you’re a mechanic servicing a fleet of commuter vehicles, a vehicle owner upgrading for better performance, or a parts supplier seeking reliable engine parts, the Piston CH125 delivers consistent power, fuel efficiency, and long-lasting reliability—solidifying its position as a trusted solution in the 125cc aftermarket.


Superior Quality Materials
The Piston CH125 is crafted from high-grade forged aluminum alloy, selected for its exceptional strength-to-weight ratio, heat resistance (up to 320°C), and wear tolerance. Unlike low-quality motorcycle parts or tricycle parts that warp under the high combustion temperatures of 125cc engines (common in prolonged highway riding or commercial use) or crack under stress, this forged alloy retains its structural integrity even after thousands of hours of operation. It also undergoes a specialized hard-anodized anti-corrosion coating to protect against moisture, oil residue, and road debris—common threats to engine parts in diverse operating environments (from urban streets to rural dirt roads). The material’s lightweight properties further enhance engine responsiveness by reducing reciprocating mass, ensuring smoother acceleration and improved fuel economy.


Perfect Fit for Multiple Applications
The Piston CH125 is a versatile solution for both motorcycle parts and tricycle parts, compatible with most 125cc engines from leading manufacturers. It seamlessly replaces OEM pistons in:
  • 125cc motorcycles: Compact commuter bikes, entry-level sports motorcycles, and retro-style scooters, delivering reliable performance for daily commutes, weekend adventures, and short-to-medium distance travel.

  • 125cc tricycles: Utility tricycles used for rural commuting, small-scale cargo transport, and commercial delivery (e.g., food delivery, local logistics), withstanding the heavy loads and rough terrain often encountered in these applications.

Designed to work with standard cylinder components and piston rings, the CH125 eliminates the need for custom modifications, making it a hassle-free upgrade or replacement part. For mechanics and parts suppliers, this broad compatibility reduces inventory complexity, while vehicle owners benefit from a direct-fit solution that gets their machine back on the road quickly.


The Crucial Role of the Piston Ring
The Piston ring is an integral component of the Piston CH125, and its 1.01.02.0 specification is engineered to complement 125cc engines’ performance demands. The set includes two 1.0mm compression rings and one 2.0mm oil control ring, each serving a critical purpose:
  • Compression Rings: The dual 1.0mm rings create a tight seal that prevents combustion gases from leaking into the crankcase, maximizing power output and ensuring efficient fuel burn. Their thin yet robust design reduces friction while maintaining structural integrity, even under the high compression pressures of 125cc engines.

  • Oil Control Ring: The 2.0mm ring scrapes excess oil from the cylinder wall, preventing oil contamination in the combustion chamber (which can reduce performance and increase emissions) and reducing oil consumption. It also distributes a thin, uniform layer of oil to lubricate the piston and cylinder, minimizing wear and extending the engine’s lifespan.

Crafted from high-strength steel with a wear-resistant chrome-nitride coating, these piston rings are built to last, complementing the durability of the Piston CH125 and ensuring consistent performance over time.


Engineered for High-Performance
The Piston CH125’s design is optimized to unlock the full potential of 125cc engines, addressing the unique demands of this displacement class:
  • Enhanced Power Output: The 52.4mm cylinder diameter and 22.3mm compression distance work together to optimize the air-fuel mixture compression, delivering a 7-9% boost in power compared to generic pistons. This translates to smoother acceleration for motorcycles merging into highway traffic and improved load-carrying capability for tricycles hauling cargo.

  • Superior Fuel Efficiency: The piston’s polished surface finish (achieved through precision honing) and tight tolerance fit (±0.003mm) minimize friction between the piston and cylinder wall, reducing energy waste. Combined with the efficient piston ring design, this results in up to 8% better fuel economy, lowering operational costs for daily users and commercial fleets.

  • Stable Operation: The 15mm piston pin diameter and 41.5mm length provide exceptional stability, distributing load evenly across the piston to prevent vibration and ensure consistent performance—even at high RPMs (common in 125cc engines during acceleration or uphill climbs).



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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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