OS Giken Nissan 240SX SR20DETTrans 5-Speed Close Ratio Gear Kit

This OS Giken close ratio gear kit is designed specifically for the 5-speed transmission found in the 1989-1998 Nissan 240SX, particularly when equipped with the SR20DET engine. What you get in this kit are the specially manufactured gears that replace your stock ones. These gears are designed to bring the ratios between each gear closer together, which means your engine will spend more time in its powerband during acceleration. This is a significant upgrade for anyone looking to improve their car's performance, especially for track use or spirited driving where quick shifts and strong acceleration are key.

OS Giken is known for its high-performance drivetrain components, and this gear kit is no exception. The gears are precision-machined to ensure smooth engagement and durability. By reducing the gaps between gear ratios, you'll notice a more immediate response when you shift, allowing you to maintain momentum more effectively. This kit is a substantial modification that requires professional installation, as it involves disassembling and rebuilding your transmission. However, the result is a transmission that feels much more responsive and capable of handling the demands of performance driving.

When undertaking a transmission rebuild for this kit, it's important to have all necessary supporting components ready. This includes fresh transmission fluid, seals, and potentially bearings, depending on the condition of your existing transmission. OS Giken's focus on performance means this gear set is built to withstand the stresses of spirited driving, offering a noticeable improvement in how your 240SX accelerates through the gears.