Drivetrain› Differentials and Rear-End Components

OS Giken

Helical-Cut Ring and Pinion Gear Set

$1,754.50

SKU: HA031-GB

In Stock
In Stock
Ships by Aug 3
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The helical-cut design ensures quiet and smooth operation, providing a comfortable experience for street use while maintaining the reliability required for racing. This kit is compatible with the S80 Gearbox and is designed for the following Honda and Acura models: Honda Civic (EG6), Honda Civic (EK4), and Honda/Acura Integra (DC2-R). It offers different configurations, including 3-Speed, 4-Speed, and 5-Speed options, each with specific gear ratios detailed on the product page. Please note that OEM synchros and bearings are required for installation and are not included with the kit.

MIA's Description

They feature a helical-cut design for quiet and smooth operation, suitable for both street driving and racing reliability.

Fitment

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Specifications

BrandOS Giken
Part NumberHA031-GB
CategoryDrivetrain

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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