| Model | FZ15 |
| Cylinder bore | φ57.3 |
| Excircle | φ72 |
| Headspace | 73.3 |
| Total length | 94.7 |
| Discharge volume | 153CM |
| Brand | KAINIU |



Unleash 150cc Power with FZ15 Cylinder Head for Dynamic Rides
Introduction:
FZ15 Cylinder Head – A Dynamic Upgrade for 150cc Engine Parts
For owners of the FZ15 motorcycle—built for spirited urban commutes, weekend highway stretches, and light off-road detours—finding engine parts that match the bike’s sporty performance and daily reliability is essential. The FZ15 Cylinder Head stands out as a purpose-engineered solution, crafted to unlock the full potential of the FZ15’s 150cc engine while preserving its signature responsiveness. As the core of the cylinder assembly, it seals the cylinder’s top, houses high-performance valves and spark plugs, and directly shapes combustion efficiency, torque delivery, and the engine’s ability to handle both city traffic and open-road acceleration. Whether you’re maintaining an FZ15 with genuine motorcycle parts or upgrading a 150cc utility tricycle with robust tricycle parts, the FZ15 Cylinder Head delivers the power, fit, and durability that 150cc vehicle owners demand.
Key Specifications of FZ15 Cylinder Head – Engineered for FZ15’s 150cc Prowess
Cylinder bore: φ57.3 mm – This precision-sized bore is a perfect match for the FZ15’s 150cc displacement, enabling smooth piston movement and optimal fuel-air mixing within the cylinder. The 57.3mm diameter generates robust combustion pressure for quick acceleration (ideal for merging onto highways or overtaking in traffic) while keeping fuel consumption in check—critical for cost-conscious daily riders who don’t want to sacrifice performance.
Excircle: φ72 mm – The outer diameter is engineered to fit the FZ15’s engine housing seamlessly, eliminating the need for modifications. This secure fit enhances structural stability, reduces vibration at high RPMs, and ensures compatibility with the bike’s original motorcycle parts—a must for owners seeking to maintain the FZ15’s factory-tuned handling and performance.
Headspace: 73.3 mm – This carefully calibrated headspace optimizes the FZ15’s compression ratio for both power and efficiency. It provides ample room for valve operation and efficient heat dissipation, preventing engine overheating during prolonged high-speed rides (such as 1-hour highway commutes) and ensuring consistent power delivery in varying conditions—from hot summer afternoons to cool winter mornings.
Total length: 94.7 mm – Its balanced length aligns with the FZ15’s engine bay layout, avoiding unnecessary bulk that could hinder the bike’s agile handling. The design also makes it a compatible upgrade for 150cc utility tricycles with mid-sized engine bays, serving as a reliable tricycle part for small-to-moderate cargo hauling.
Discharge volume: 153CM – This displacement closely mirrors the FZ15’s factory 150cc output, ensuring the Cylinder Head works in perfect harmony with the engine’s existing components. The 153CM volume delivers the FZ15’s signature low-to-mid-range torque, making it easy to navigate stop-and-go city traffic or cruise at steady highway speeds without straining the engine.
These specifications aren’t just technical details—they’re a reflection of the FZ15’s “sporty yet practical” ethos, ensuring the FZ15 Cylinder Head lives up to the bike’s reputation for dynamic performance.
FZ15 Motorcycle Compatibility: It’s a direct replacement for all FZ15 variants (including FZ15 V2 and FZ15S), fitting seamlessly with the bike’s original engine parts. Whether you’re repairing a well-loved FZ15 or restoring an older model, this head ensures the bike retains its sporty performance and factory feel.
150cc Tricycle Compatibility: For 150cc utility tricycles used for small-scale cargo transport (e.g., delivering packages, carrying farm tools), the FZ15 Cylinder Head is a robust upgrade. Its 94.7mm length and 153CM displacement fit most 150cc tricycle engine setups, making it a cost-effective tricycle part that brings FZ15-level reliability to workhorse vehicles.
This compatibility ensures the FZ15 Cylinder Head isn’t just an FZ15 replacement—it’s a flexible solution for 150cc vehicle owners.
FZ15-Specific Engineering: Unlike generic heads, it’s built exclusively for the FZ15’s dynamic engine, ensuring it matches the bike’s sporty performance and fitment exactly.
Balance of Power and Practicality: It delivers the FZ15’s signature sporty torque while maintaining fuel efficiency—perfect for riders who want both excitement and daily usability.
Multi-Vehicle Value: It works for both FZ15 motorcycles and 150cc tricycles, offering more versatility than single-use motorcycle parts or tricycle parts.
| Model | FZ15 |
| Cylinder bore | φ57.3 |
| Excircle | φ72 |
| Headspace | 73.3 |
| Total length | 94.7 |
| Discharge volume | 153CM |
| Brand | KAINIU |



Unleash 150cc Power with FZ15 Cylinder Head for Dynamic Rides
Introduction:
FZ15 Cylinder Head – A Dynamic Upgrade for 150cc Engine Parts
For owners of the FZ15 motorcycle—built for spirited urban commutes, weekend highway stretches, and light off-road detours—finding engine parts that match the bike’s sporty performance and daily reliability is essential. The FZ15 Cylinder Head stands out as a purpose-engineered solution, crafted to unlock the full potential of the FZ15’s 150cc engine while preserving its signature responsiveness. As the core of the cylinder assembly, it seals the cylinder’s top, houses high-performance valves and spark plugs, and directly shapes combustion efficiency, torque delivery, and the engine’s ability to handle both city traffic and open-road acceleration. Whether you’re maintaining an FZ15 with genuine motorcycle parts or upgrading a 150cc utility tricycle with robust tricycle parts, the FZ15 Cylinder Head delivers the power, fit, and durability that 150cc vehicle owners demand.
Key Specifications of FZ15 Cylinder Head – Engineered for FZ15’s 150cc Prowess
Cylinder bore: φ57.3 mm – This precision-sized bore is a perfect match for the FZ15’s 150cc displacement, enabling smooth piston movement and optimal fuel-air mixing within the cylinder. The 57.3mm diameter generates robust combustion pressure for quick acceleration (ideal for merging onto highways or overtaking in traffic) while keeping fuel consumption in check—critical for cost-conscious daily riders who don’t want to sacrifice performance.
Excircle: φ72 mm – The outer diameter is engineered to fit the FZ15’s engine housing seamlessly, eliminating the need for modifications. This secure fit enhances structural stability, reduces vibration at high RPMs, and ensures compatibility with the bike’s original motorcycle parts—a must for owners seeking to maintain the FZ15’s factory-tuned handling and performance.
Headspace: 73.3 mm – This carefully calibrated headspace optimizes the FZ15’s compression ratio for both power and efficiency. It provides ample room for valve operation and efficient heat dissipation, preventing engine overheating during prolonged high-speed rides (such as 1-hour highway commutes) and ensuring consistent power delivery in varying conditions—from hot summer afternoons to cool winter mornings.
Total length: 94.7 mm – Its balanced length aligns with the FZ15’s engine bay layout, avoiding unnecessary bulk that could hinder the bike’s agile handling. The design also makes it a compatible upgrade for 150cc utility tricycles with mid-sized engine bays, serving as a reliable tricycle part for small-to-moderate cargo hauling.
Discharge volume: 153CM – This displacement closely mirrors the FZ15’s factory 150cc output, ensuring the Cylinder Head works in perfect harmony with the engine’s existing components. The 153CM volume delivers the FZ15’s signature low-to-mid-range torque, making it easy to navigate stop-and-go city traffic or cruise at steady highway speeds without straining the engine.
These specifications aren’t just technical details—they’re a reflection of the FZ15’s “sporty yet practical” ethos, ensuring the FZ15 Cylinder Head lives up to the bike’s reputation for dynamic performance.
FZ15 Motorcycle Compatibility: It’s a direct replacement for all FZ15 variants (including FZ15 V2 and FZ15S), fitting seamlessly with the bike’s original engine parts. Whether you’re repairing a well-loved FZ15 or restoring an older model, this head ensures the bike retains its sporty performance and factory feel.
150cc Tricycle Compatibility: For 150cc utility tricycles used for small-scale cargo transport (e.g., delivering packages, carrying farm tools), the FZ15 Cylinder Head is a robust upgrade. Its 94.7mm length and 153CM displacement fit most 150cc tricycle engine setups, making it a cost-effective tricycle part that brings FZ15-level reliability to workhorse vehicles.
This compatibility ensures the FZ15 Cylinder Head isn’t just an FZ15 replacement—it’s a flexible solution for 150cc vehicle owners.
FZ15-Specific Engineering: Unlike generic heads, it’s built exclusively for the FZ15’s dynamic engine, ensuring it matches the bike’s sporty performance and fitment exactly.
Balance of Power and Practicality: It delivers the FZ15’s signature sporty torque while maintaining fuel efficiency—perfect for riders who want both excitement and daily usability.
Multi-Vehicle Value: It works for both FZ15 motorcycles and 150cc tricycles, offering more versatility than single-use motorcycle parts or tricycle parts.