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    MFactory B16A,B/B18C/H22A/F20B Dual Cone Close Ratio 3-4 (W/ Hub and Synchros)
    MFactory B16A,B/B18C/H22A/F20B Dual Cone Close Ratio 3-4 (W/ Hub and Synchros)

    MFactory B16A,B/B18C/H22A/F20B Dual Cone Close Ratio 3-4 (W/ Hub and Synchros)

    If you're looking to tighten up your ratios in your B series Race/Street Car while upgrading to Dual Cone Carbon Synchros and Hardened Hub, look no further. MFactory has brought about their Upgraded 3-4 gearset which includes (2) Dual Cone Carbon Synchros, and the necessary Hub for the conversion; DOES NOT INCLUDE 3-4 SLEEVE. This is a great upgrade for any B16A/B, B18C, H22, F20B Due to tighter ratios and upgraded 3 piece synchros. Part # MF-TRS-01BSA
    Ratio Choices: Option 1 (3rd: 1.636, 4th: 1.310)   
                              Option 2 (3rd: 1.667, 4th: 1.357)   
                              Option 3 (3rd: 1.700, 4th: 1.410)

    4th Gear - Slight modification required to transmission casing when installing 1.357 or 1.410