What is a close ratio gear set and why would I want one?

A close ratio gear set changes the ratios between gears in your transmission to be closer together. This means less of a drop in engine RPMs when you shift gears, keeping the engine in its power band more effectively and improving acceleration. It's a popular choice for performance driving where quick shifts and consistent power delivery are important.

What does 'includes a new input shaft' mean for installation?

This kit comes with a new input shaft because the design of the close ratio gears requires a specific shaft to mate with them. This means the transmission will need to be fully disassembled, and the old input shaft replaced with the new one provided in the kit as part of the installation process.

What other parts should I consider replacing when installing this gear kit?

When you're rebuilding your transmission to install this gear kit, it's highly recommended to replace wear items such as bearings, seals, and synchronizer rings. Inspecting all internal components for wear and replacing them will ensure the longevity and optimal performance of your newly geared transmission.

Specifications

Brand: OS Giken
Part #: NS201-GM

OS Giken Nissan Skyline FS5W30A Trans 3-Speed w/Input Shaft Close Ratio Gear Kit

Name: OS Giken Nissan Skyline FS5W30A Trans 3-Speed w/Input Shaft Close Ratio Gear Kit
Brand: OS Giken
SKU: os-giken-os-giken-nissan-skyline-fs5w30a-trans-3-speed-w-input-shaft-close-ratio-t14-934865
Price: 3329.28 USD
Availability: BackOrder

$3329.28

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OS Giken Nissan Skyline FS5W30A transmission close ratio gear kit for improved acceleration.

Key Features

Fits Nissan Skyline FS5W30A transmissions.
This is a 3-speed close ratio gear kit.
Includes a new input shaft.
Designed to bring gear ratios closer together for improved acceleration.
Allows the engine to stay in its power band more effectively during shifts.
A popular modification for track use and spirited driving.

This gear kit is designed for Nissan Skyline FS5W30A transmissions. Please consult OS Giken documentation for specific model year compatibility and installation requirements.

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About this part

Product Details

If you're looking to get more out of your Nissan Skyline's manual transmission, especially for track use or spirited driving where quick acceleration is key, this close ratio gear kit from OS Giken is a solid option. It's designed to change the gear ratios in your FS5W30A transmission, bringing the gears closer together. This means less of a drop in RPMs when you shift, allowing the engine to stay in its power band more effectively and improving overall acceleration. This kit is specifically for the 3-speed configuration and includes a new input shaft.

OS Giken is well-known for making high-performance drivetrain components, and this gear set is no exception. They use strong materials and precise manufacturing to ensure these gears can handle the extra stress that comes with more aggressive driving. The close ratio setup is a popular modification for tuners who want to optimize their car's performance for specific conditions, like drag racing or road courses where you're constantly shifting. Installing a gear set like this involves a full transmission rebuild, so it's a job for someone comfortable with detailed mechanical work or a professional shop.

When you're rebuilding your transmission for this gear kit, it's a good time to inspect all the other components like bearings, seals, and synchros. Having everything fresh will ensure the new gear set performs at its best and lasts for a long time. This kit is a significant upgrade for anyone serious about maximizing their Skyline's performance through its drivetrain.