Cusco GR Corolla Reinforced Transmission Clutch Sync. Hub Set

Overview

The Cusco Reinforced Transmission Clutch (Synchronizer) Hub Set is a high-performance internal transmission upgrade engineered for drivers who demand durability, precision, and reliability from their manual gearbox. Designed specifically for the GR Yaris and GR Corolla manual transmissions, this complete 3-piece hub kit is the ultimate solution for aggressive drivers and motorsport applications.

Constructed from premium chromoly steel, these hubs drastically outperform the weaker OEM synchronizer components, offering superior tensile strength and wear resistance under high torque, hard launches, and repeated high-load shifting. Whether you’re prepping your GR Corolla for track days, rally stages, or high-power street use, this reinforced hub set helps protect your transmission from premature wear and failure. 

Key Features

• Direct OEM Replacement: Designed to exact factory dimensions for a seamless, drop-in fit — no machining, cutting, or modification required.

• Complete Coverage: Includes reinforced hubs for 1-2, 3-4, and 5-6 gears, strengthening all critical synchronizer points in the 6-speed gearbox.

• Chromoly Steel Construction: Exceptional strength and fatigue resistance help prevent common transmission failures seen with stock hubs, especially under competition or high-stress conditions.

• Performance-Focused: Ideal for cars with upgraded clutches, grippy tires, high horsepower, or aggressive shifting — making it a smart preventative upgrade for both track and spirited street driving.

Installation Note: This is an internal transmission component. Professional installation by a qualified transmission builder or specialist is required.