4.78 - 14x67 / 4.92 - 14x69 Final Drive for Honda B16B / B18C engine gearbox

Final Drive for Honda B16B / B18C Gearbox

Available Ratios:

• 4.78 – 14/67

• 4.92 – 14/69

Material:

Manufactured from billet and forged Ni-Cr-Mo steel, providing exceptional mechanical strength, high impact resistance, and long-term durability under high torque and aggressive driving conditions.

Hardness:

• HRC 56–60, ensuring excellent resistance to wear and surface fatigue, even in motorsport and high-performance street applications.

Surface Treatments:

Multiple advanced surface treatment processes are applied to maximize durability and reliability:

• Sandblasting – Ensures uniform surface finish and optimal surface preparation

• Shot peening – Increases fatigue strength by inducing compressive surface stresses

• WPC treatment – Enhances surface hardness, reduces friction, and improves micro-surface durability

Heat Treatments:

To achieve maximum strength, dimensional stability, and service life, the following heat treatments are applied:

• Carburizing – Produces a hard, wear-resistant surface while maintaining a tough core

• Cryogenic treatment – Improves dimensional stability, wear resistance, and long-term gear mesh performance

Performance Benefits:

• Increased torque multiplication and improved acceleration

• Designed specifically for Honda B16B and B18C gearboxes

• High resistance to shock loads and sustained high-RPM operation

• Suitable for motorsport and high-performance street use