Looking to upgrade your Mazda with a transmission internal from OS Giken? We carry a great variety of OS Giken Close Ratio Gear Kits and other drivetrain performance parts for your Mazda.
We have 3 OS Giken Close Ratio Gear Kits available for Mazda models with free shipping to the Continental US 48 States.
Mazda OS Giken Close Ratio Gear Kits |
Mazda RX-7View all Mazda RX-7 Transmission Internals |
 SHIPS FROM MANUFACTURER MZ111-GCOS Giken Mazda RX7 FC3S 13BT 5 Speed Close Ratio Gear Kit w/ Input Shaft 1986-1990 Mazda RX-7 GXL 1986-1987 Mazda RX-7 Base 1986-1991 Mazda RX-7 Turbo 1987-1987 Mazda RX-7 LX 1987-1987 Mazda RX-7 LX 2+2 1987-1990 Mazda RX-7 GXL 2+2 1987-1987 Mazda RX-7 Base 2+2 1987-1987 Mazda RX-7 Sport 1988-1988 Mazda RX-7 SE 1988-1988 Mazda RX-7 SE 2+2 1988-1990 Mazda RX-7 GTU 1988-1991 Mazda RX-7 Convertible 1988-1988 Mazda RX-7 10th Anniversary 1989-1990 Mazda RX-7 GTUs 1991-1991 Mazda RX-7 Base $2,910.00
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 SHIPS FROM MANUFACTURER MZ111-GAOS Giken Mazda RX7 FC3S 13BT 3 Speed Close Ratio Gear Kit 1986-1990 Mazda RX-7 GXL 1986-1987 Mazda RX-7 Base 1986-1991 Mazda RX-7 Turbo 1987-1987 Mazda RX-7 LX 1987-1987 Mazda RX-7 LX 2+2 1987-1990 Mazda RX-7 GXL 2+2 1987-1987 Mazda RX-7 Base 2+2 1987-1987 Mazda RX-7 Sport 1988-1988 Mazda RX-7 SE 1988-1988 Mazda RX-7 SE 2+2 1988-1990 Mazda RX-7 GTU 1988-1991 Mazda RX-7 Convertible 1988-1988 Mazda RX-7 10th Anniversary 1989-1990 Mazda RX-7 GTUs 1991-1991 Mazda RX-7 Base $2,370.00
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 SHIPS FROM MANUFACTURER MZ121-GCOS Giken Mazda RX7 FD3S 13BT 5 Speed Close Ratio Gear Kit w/ Input Shaft 1993-1995 Mazda RX-7 Touring 1993-1993 Mazda RX-7 R1 1993-1995 Mazda RX-7 Base 1994-1995 Mazda RX-7 R2 $2,910.00
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