Achieve the ultimate in acceleration with the MFactory Final Drive Gears. By changing your final gear ratios, you can experience a dramatic increase in acceleration, giving you on average, a 10-15% increase in torque throughout the entire rev-range over the OEM Final Drive.

Diamond Cut to exacting tolerances from Forged High-Nickel-Chromium-Molybdenum Steel
Perfect fitment & finish ensures hassle-free installation & maintenance, each and every time

Designed using leading-edge Solidworks 3D CAD & Cosmos FEA software
Advanced Gear Geometry minimizes parasitic drivetrain losses. Race transmissions built with MFactory components transfer, on average, 1-2% more power to the ground over our competitors!

Standard Specifications

• Made from imported Japanese SAE 8620 or 4320 Steel
• Forged and Double Tempered for unsurpassed toughness
• Advanced Shot Peening technology increases surface hardness
• Advanced gear geometry designed using industry-leading software puts more power to the ground

OZ Series Specifications

• Manufactured in partnership with OZ Performance Drivetrain of Australia
• Made from imported Japanese SAE 8620 or 4320 Steel
• Forged, Doubled Tempered with additional Cryogenic Tempering for unsurpassed toughness
• 3-Stage Nano-Peen technology on gear teeth increases surface hardness
• All bearing journals are subjected to an advanced MoS2 surface coating to significantly decrease friction
• Advanced gear geometry designed using industry-leading software puts more power to the ground

Extreme Duty OZ Specifications

• Manufactured in Australia by OZ Performance Drivetrain
• Made from a proprietary SNCM 6X Alloy Steel
• Forged, Doubled Tempered with additional Cryogenic Tempering for unsurpassed toughness
• Precision surface grinding using state-of-the-art Klingelnberg grinding machines, ensuring all parts are smooth, precise, and free of burrs
• 3-Stage Nano-Peen technology on gear teeth increases surface hardness
• All bearing journals are subjected to an advanced MoS2 surface coating to significantly decrease friction
• All tooth surfaces are subjected to an advanced ceramic surface coating, significantly decreasing surface friction and increasing surface hardness by 30%!

Fitment Notes Honda B16A2 Fitments: Will not fit models equipped with Factory LSD

Honda B16A2/16B/18C Fitments: Offering a revised design over our previous generation Final Drive Gears. Forged from stronger steel with a 50% larger tooth profile yet almost 1kg lighter!

Honda Cable Fitments: Will not fit models equipped with Factory LSD. 92-93 YS1 transmissions should use B16A2 fitments

Honda '98 Spec Fitments: Designed for the '98 Spec Integra Type-R with Factory 4.785 Final Drive

Honda H22A Fitments: Will not fit ATTS-equipped transmissions. Is also suitable for Euro-R/Accord Type-R

For Ford Focus MTX-75: Designed for 2002+ Transmission Only. Will only fit applications using the 1pc Pinion (Removable 3rd & 4th Gear)

Click to view larger image:

Due to the nature of For Race Use Only products, MFactory Competition Products will provide a limited 1 year warranty for all Final Drive Gears to be free of defects in materials and workmanship upon receipt of product and time of professional installation. It is the sole responsibility of the buyer/installer to verify the suitability for installation. Parts once used in a running transmission/carrier will not be covered under warranty. Parts returned must be determined by MFactory Competition Products to be defective before any warranty credit or replacement is issued

MFactory Competition Products's obligation under warranty shall be limited to repairing or replacing, at its option, any part proven defective. The customer must prepay transportation charges

Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. MFactory Competition Products shall not be liable for any special, direct, indirect, incidental, or consequential damages, that might be claimed as a result of the failure of any part, including claims for delay, loss of profits, or labor

MFactory Competition Products shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty

There are no other warranties expressed or implied extending beyond those set forth above