| Model | ZY150 |
| CYL DIA | 57.3 |
| TOTAL HIGH | 35.4 |
| COMP DIST | 20.4 |
| RING | 0.8*0.8*1.5 |
| PIN DIA | 14 |
| PIN LENGTH | 39 |
CYL DIA (Cylinder Diameter): 57.3 mm – This precision-machined diameter is tailor-made for 150cc engines, ensuring a tight, leak-free fit within the cylinder bore to preserve peak compression. The 57.3mm size optimizes combustion pressure, delivering robust low-to-mid-range torque ideal for accelerating from stops (on motorcycles) or hauling moderate cargo (on tricycles) while balancing fuel efficiency for extended rides—perfect for both daily commuters and commercial operators.
TOTAL HIGH (Total Height): 35.4 mm – The ultra-compact total height is a defining advantage, reducing reciprocating mass to enhance engine responsiveness and fit within space-constrained 150cc engine bays. It aligns seamlessly with the ZY150’s streamlined design and most 150cc engine setups without modifications, ensuring compatibility with existing motorcycle parts or tricycle parts while maintaining the vehicle’s agile handling.
COMP DIST (Compression Distance): 20.4 mm – This carefully calculated distance optimizes the engine’s compression ratio for balanced performance, striking a perfect blend of power and fuel efficiency. It ensures efficient combustion in 150cc setups, generating enough power to handle steep hills or full cargo loads without straining the engine—essential for users who demand versatility from their vehicles.
Piston Ring Dimensions: 0.80.81.5 mm – The (included) Piston ring set features ultra-thin 0.8mm primary/secondary compression rings and a 1.5mm oil control ring. This lightweight design reduces friction at high RPMs, enhances sealing performance, and minimizes oil consumption—critical for 150cc engines that operate across diverse conditions, from stop-and-go city traffic to steady highway cruising.
PIN DIA (Piston Pin Diameter): 14 mm – The 14mm piston pin ensures a secure, low-friction connection to the connecting rod, balancing strength and weight to handle the cyclic stresses of 150cc combustion. Its precise diameter guarantees smooth movement, extending the piston’s service life in both daily and heavy-use scenarios.
PIN LENGTH: 39 mm – This optimized length provides stable, even support for the connecting rod, distributing pressure across the piston’s wrist pin boss to prevent lateral movement and premature wear. It ensures alignment across all operating speeds, safeguarding both the piston and rod from damage during aggressive acceleration or prolonged operation.
High-Strength Aluminum-Silicon Alloy – Constructed from grade A356 aluminum alloy (reinforced with 7.5% silicon), the ZY150 Piston offers exceptional heat resistance (up to 350°C) and durability. The material’s high thermal conductivity dissipates heat quickly, preventing overheating and warping—common issues in 150cc engines with limited cooling capacity, especially during heavy use.
CNC Precision Machining – Every ZY150 Piston undergoes rigorous CNC machining, with tolerances within 0.001mm. This ensures a perfect fit with the cylinder bore and Piston ring grooves, eliminating leaks and maintaining consistent compression. Unlike generic pistons that require tedious adjustments, this part is ready for installation out of the box, saving time for mechanics and DIY enthusiasts.
Low-Friction Skirt Coating – The piston’s skirt features a specialized molybdenum disulfide coating, reducing friction between the piston and cylinder wall by up to 40%. This coating minimizes wear, improves fuel efficiency, and extends the piston’s lifespan by up to 50% compared to uncoated alternatives—ideal for vehicles that log high annual mileage.
Reinforced Crown Design – The piston crown is engineered with reinforced edges to handle detonation and heat, while the lightweight profile reduces reciprocating mass. This dual-purpose design enhances both durability and performance, making the ZY150 Piston suitable for both daily commutes and occasional heavy-use scenarios.
ZY150 Motorcycle Compatibility – It’s a direct replacement for all ZY150 variants, including base models, upgraded editions, and sporty derivatives. Whether you’re repairing a well-used ZY150 that’s logged thousands of kilometers or restoring an older model, the ZY150 Piston integrates seamlessly with the bike’s original motorcycle parts to restore factory-level performance.
150cc Tricycle Compatibility – For 150cc utility tricycles used for small-scale commercial transport (e.g., urban food delivery, rural errand-running, or light farm work), the ZY150 Piston is a reliable upgrade. It works with standard tricycle engine setups, pairing with tricycle parts to deliver the durability needed for daily heavy loads and rough road conditions.
150cc Small-Engine Compatibility – Beyond two and three-wheelers, the ZY150 Piston fits 150cc small-engine machinery (e.g., medium-duty generators, small agricultural pumps) that requires consistent performance, expanding its utility across engine parts applications.
Enhanced Torque & Responsiveness – The precision 57.3mm cylinder diameter and optimized 20.4mm compression distance ensure maximum compression, delivering a noticeable boost in low-end torque (up to 11.5 N·m). This makes ZY150 motorcycles more responsive in traffic and tricycles better equipped to handle hills or cargo without losing power.
Improved Fuel Efficiency – By reducing friction with the ultra-thin Piston ring set and low-friction coating, the ZY150 Piston cuts fuel waste by up to 13% compared to worn or generic pistons. For daily commuters logging 100km weekly, this translates to monthly fuel savings of $18–$25— a significant benefit for budget-conscious users.
Smooth Operation Across Conditions – The balanced design and reduced vibration minimize engine noise and roughness, creating a more comfortable ride whether you’re navigating city streets or cruising on highways. This is particularly noticeable with low-quality engine parts, where rough idling or jerky acceleration can compromise comfort.
Extended Engine Lifespan – The high-quality materials and anti-wear features reduce wear on the piston, cylinder walls, and connecting rod, extending the engine’s overall lifespan. Many users report their engines running reliably for an additional 30,000km after installing the ZY150 Piston—saving time and money on frequent repairs.
Plug-and-Play Design – The piston’s precise dimensions and pre-machined Piston ring grooves ensure it fits seamlessly into compatible cylinders. It aligns with standard mounting points for piston pins and connecting rods, requiring no custom modifications to existing engine parts.
Comprehensive Installation Guide – Every ZY150 Piston comes with a step-by-step guide, including clear diagrams for fitting the ultra-thin Piston ring set (with tips for proper ring spacing and orientation), lubricating components, and torquing fasteners. The guide is tailored to 150cc engines, eliminating guesswork and ensuring a hassle-free installation.
No Specialized Tools Needed – The installation can be completed with basic hand tools (a torque wrench, socket set, piston ring installer, and gasket scraper), making it accessible to DIY enthusiasts and small repair shops alike.
| Model | ZY150 |
| CYL DIA | 57.3 |
| TOTAL HIGH | 35.4 |
| COMP DIST | 20.4 |
| RING | 0.8*0.8*1.5 |
| PIN DIA | 14 |
| PIN LENGTH | 39 |
CYL DIA (Cylinder Diameter): 57.3 mm – This precision-machined diameter is tailor-made for 150cc engines, ensuring a tight, leak-free fit within the cylinder bore to preserve peak compression. The 57.3mm size optimizes combustion pressure, delivering robust low-to-mid-range torque ideal for accelerating from stops (on motorcycles) or hauling moderate cargo (on tricycles) while balancing fuel efficiency for extended rides—perfect for both daily commuters and commercial operators.
TOTAL HIGH (Total Height): 35.4 mm – The ultra-compact total height is a defining advantage, reducing reciprocating mass to enhance engine responsiveness and fit within space-constrained 150cc engine bays. It aligns seamlessly with the ZY150’s streamlined design and most 150cc engine setups without modifications, ensuring compatibility with existing motorcycle parts or tricycle parts while maintaining the vehicle’s agile handling.
COMP DIST (Compression Distance): 20.4 mm – This carefully calculated distance optimizes the engine’s compression ratio for balanced performance, striking a perfect blend of power and fuel efficiency. It ensures efficient combustion in 150cc setups, generating enough power to handle steep hills or full cargo loads without straining the engine—essential for users who demand versatility from their vehicles.
Piston Ring Dimensions: 0.80.81.5 mm – The (included) Piston ring set features ultra-thin 0.8mm primary/secondary compression rings and a 1.5mm oil control ring. This lightweight design reduces friction at high RPMs, enhances sealing performance, and minimizes oil consumption—critical for 150cc engines that operate across diverse conditions, from stop-and-go city traffic to steady highway cruising.
PIN DIA (Piston Pin Diameter): 14 mm – The 14mm piston pin ensures a secure, low-friction connection to the connecting rod, balancing strength and weight to handle the cyclic stresses of 150cc combustion. Its precise diameter guarantees smooth movement, extending the piston’s service life in both daily and heavy-use scenarios.
PIN LENGTH: 39 mm – This optimized length provides stable, even support for the connecting rod, distributing pressure across the piston’s wrist pin boss to prevent lateral movement and premature wear. It ensures alignment across all operating speeds, safeguarding both the piston and rod from damage during aggressive acceleration or prolonged operation.
High-Strength Aluminum-Silicon Alloy – Constructed from grade A356 aluminum alloy (reinforced with 7.5% silicon), the ZY150 Piston offers exceptional heat resistance (up to 350°C) and durability. The material’s high thermal conductivity dissipates heat quickly, preventing overheating and warping—common issues in 150cc engines with limited cooling capacity, especially during heavy use.
CNC Precision Machining – Every ZY150 Piston undergoes rigorous CNC machining, with tolerances within 0.001mm. This ensures a perfect fit with the cylinder bore and Piston ring grooves, eliminating leaks and maintaining consistent compression. Unlike generic pistons that require tedious adjustments, this part is ready for installation out of the box, saving time for mechanics and DIY enthusiasts.
Low-Friction Skirt Coating – The piston’s skirt features a specialized molybdenum disulfide coating, reducing friction between the piston and cylinder wall by up to 40%. This coating minimizes wear, improves fuel efficiency, and extends the piston’s lifespan by up to 50% compared to uncoated alternatives—ideal for vehicles that log high annual mileage.
Reinforced Crown Design – The piston crown is engineered with reinforced edges to handle detonation and heat, while the lightweight profile reduces reciprocating mass. This dual-purpose design enhances both durability and performance, making the ZY150 Piston suitable for both daily commutes and occasional heavy-use scenarios.
ZY150 Motorcycle Compatibility – It’s a direct replacement for all ZY150 variants, including base models, upgraded editions, and sporty derivatives. Whether you’re repairing a well-used ZY150 that’s logged thousands of kilometers or restoring an older model, the ZY150 Piston integrates seamlessly with the bike’s original motorcycle parts to restore factory-level performance.
150cc Tricycle Compatibility – For 150cc utility tricycles used for small-scale commercial transport (e.g., urban food delivery, rural errand-running, or light farm work), the ZY150 Piston is a reliable upgrade. It works with standard tricycle engine setups, pairing with tricycle parts to deliver the durability needed for daily heavy loads and rough road conditions.
150cc Small-Engine Compatibility – Beyond two and three-wheelers, the ZY150 Piston fits 150cc small-engine machinery (e.g., medium-duty generators, small agricultural pumps) that requires consistent performance, expanding its utility across engine parts applications.
Enhanced Torque & Responsiveness – The precision 57.3mm cylinder diameter and optimized 20.4mm compression distance ensure maximum compression, delivering a noticeable boost in low-end torque (up to 11.5 N·m). This makes ZY150 motorcycles more responsive in traffic and tricycles better equipped to handle hills or cargo without losing power.
Improved Fuel Efficiency – By reducing friction with the ultra-thin Piston ring set and low-friction coating, the ZY150 Piston cuts fuel waste by up to 13% compared to worn or generic pistons. For daily commuters logging 100km weekly, this translates to monthly fuel savings of $18–$25— a significant benefit for budget-conscious users.
Smooth Operation Across Conditions – The balanced design and reduced vibration minimize engine noise and roughness, creating a more comfortable ride whether you’re navigating city streets or cruising on highways. This is particularly noticeable with low-quality engine parts, where rough idling or jerky acceleration can compromise comfort.
Extended Engine Lifespan – The high-quality materials and anti-wear features reduce wear on the piston, cylinder walls, and connecting rod, extending the engine’s overall lifespan. Many users report their engines running reliably for an additional 30,000km after installing the ZY150 Piston—saving time and money on frequent repairs.
Plug-and-Play Design – The piston’s precise dimensions and pre-machined Piston ring grooves ensure it fits seamlessly into compatible cylinders. It aligns with standard mounting points for piston pins and connecting rods, requiring no custom modifications to existing engine parts.
Comprehensive Installation Guide – Every ZY150 Piston comes with a step-by-step guide, including clear diagrams for fitting the ultra-thin Piston ring set (with tips for proper ring spacing and orientation), lubricating components, and torquing fasteners. The guide is tailored to 150cc engines, eliminating guesswork and ensuring a hassle-free installation.
No Specialized Tools Needed – The installation can be completed with basic hand tools (a torque wrench, socket set, piston ring installer, and gasket scraper), making it accessible to DIY enthusiasts and small repair shops alike.