| Model | CB250-B |
| CYL DIA | 65.5 |
| TOTAL HIGH | 41.8 |
| COMP DIST | 21.3 |
| RING | 0.8*0.8*1.5 |
| PIN DIA | 15 |
| PIN LENGTH | 47.5 |
The total height (TOTAL HIGH) of 41.8mm—compact for its class—is a critical factor in the piston’s ability to maintain stability while keeping overall engine weight low. This dimension ensures the piston fits snugly within the CB250-B engine block, maintaining consistent clearance with the cylinder head and crankshaft even during rapid acceleration or deceleration. A stable, lightweight piston minimizes vibration (reducing rider fatigue in motorcycles and structural strain in tricycles), lowers inertial resistance for quicker revving, and prevents premature wear—key benefits for motorcycle parts and tricycle parts that face dynamic use. The 41.8mm height also avoids interference with valve trains or piston skirts, extending the overall lifespan of your CB250-B engine.
The piston pin (wrist pin) is the vital link between the piston and connecting rod, and the Piston:CB250-B features a pin with a diameter (PIN DIA) of 15mm and length (PIN LENGTH) of 47.5mm—built to handle the dynamic forces of lightweight 250cc combustion cycles. The 15mm diameter provides optimal structural strength without adding unnecessary weight, while the 47.5mm length ensures a secure, evenly distributed fit with CB250-B connecting rods. This balanced design guarantees smooth, efficient power transfer to the crankshaft, avoiding slippage or breakage even during aggressive riding or frequent stop-start hauling. For engine parts that need to balance strength and lightness, this piston pin is a mark of unmatched reliability for CB250-B systems.
Sporty commuter motorcycles: Perfect for urban rides, winding country roads, and weekend adventures, where agility, acceleration, and fuel efficiency are top priorities.
Light-to-medium CB250-B tricycles: Designed to haul loads up to 1,300kg (common in local delivery, small-scale farming, and community transport), ensuring the engine maintains responsive power.
Restored CB250-B engines: Ideal for bringing vintage CB250-B motorcycles back to life, combining original performance with modern durability.
Utility CB250-B engines: Used in off-road mini-tricycles or small work vehicles, where lightweight design and durability in mild rough terrain (gravel roads, dirt paths) are essential.
No matter the application, the Piston:CB250-B integrates seamlessly with CB250-B engines, making it a one-stop solution for all your lightweight 250cc engine parts needs.
Precision CB250-B compatibility: Every spec (from 65.5mm cylinder diameter to 21.3mm compression distance) is tailored to CB250-B engines, ensuring a perfect fit and avoiding installation errors that damage lightweight 250cc systems.
Lightweight-focused durability: Forged 2618-T6 aluminum and DLC-coated piston rings mean the piston lasts 2.2x longer than generic 250cc engine parts, without sacrificing agility.
Agile performance optimization: The piston reduces friction and inertial resistance, improving CB250-B engine rev response by 10% and fuel efficiency by up to 16%—while delivering 13% more torque at 4,500–8,500 RPM (the sweet spot for lightweight 250cc vehicles).
For mechanics and vehicle owners, this means less downtime, lower fuel and repair costs, and a CB250-B engine that balances agility and reliability—making the Piston:CB250-B the smart choice for motorcycle parts and tricycle parts.
| Model | CB250-B |
| CYL DIA | 65.5 |
| TOTAL HIGH | 41.8 |
| COMP DIST | 21.3 |
| RING | 0.8*0.8*1.5 |
| PIN DIA | 15 |
| PIN LENGTH | 47.5 |
The total height (TOTAL HIGH) of 41.8mm—compact for its class—is a critical factor in the piston’s ability to maintain stability while keeping overall engine weight low. This dimension ensures the piston fits snugly within the CB250-B engine block, maintaining consistent clearance with the cylinder head and crankshaft even during rapid acceleration or deceleration. A stable, lightweight piston minimizes vibration (reducing rider fatigue in motorcycles and structural strain in tricycles), lowers inertial resistance for quicker revving, and prevents premature wear—key benefits for motorcycle parts and tricycle parts that face dynamic use. The 41.8mm height also avoids interference with valve trains or piston skirts, extending the overall lifespan of your CB250-B engine.
The piston pin (wrist pin) is the vital link between the piston and connecting rod, and the Piston:CB250-B features a pin with a diameter (PIN DIA) of 15mm and length (PIN LENGTH) of 47.5mm—built to handle the dynamic forces of lightweight 250cc combustion cycles. The 15mm diameter provides optimal structural strength without adding unnecessary weight, while the 47.5mm length ensures a secure, evenly distributed fit with CB250-B connecting rods. This balanced design guarantees smooth, efficient power transfer to the crankshaft, avoiding slippage or breakage even during aggressive riding or frequent stop-start hauling. For engine parts that need to balance strength and lightness, this piston pin is a mark of unmatched reliability for CB250-B systems.
Sporty commuter motorcycles: Perfect for urban rides, winding country roads, and weekend adventures, where agility, acceleration, and fuel efficiency are top priorities.
Light-to-medium CB250-B tricycles: Designed to haul loads up to 1,300kg (common in local delivery, small-scale farming, and community transport), ensuring the engine maintains responsive power.
Restored CB250-B engines: Ideal for bringing vintage CB250-B motorcycles back to life, combining original performance with modern durability.
Utility CB250-B engines: Used in off-road mini-tricycles or small work vehicles, where lightweight design and durability in mild rough terrain (gravel roads, dirt paths) are essential.
No matter the application, the Piston:CB250-B integrates seamlessly with CB250-B engines, making it a one-stop solution for all your lightweight 250cc engine parts needs.
Precision CB250-B compatibility: Every spec (from 65.5mm cylinder diameter to 21.3mm compression distance) is tailored to CB250-B engines, ensuring a perfect fit and avoiding installation errors that damage lightweight 250cc systems.
Lightweight-focused durability: Forged 2618-T6 aluminum and DLC-coated piston rings mean the piston lasts 2.2x longer than generic 250cc engine parts, without sacrificing agility.
Agile performance optimization: The piston reduces friction and inertial resistance, improving CB250-B engine rev response by 10% and fuel efficiency by up to 16%—while delivering 13% more torque at 4,500–8,500 RPM (the sweet spot for lightweight 250cc vehicles).
For mechanics and vehicle owners, this means less downtime, lower fuel and repair costs, and a CB250-B engine that balances agility and reliability—making the Piston:CB250-B the smart choice for motorcycle parts and tricycle parts.