Gear-X components are absolutely the best of the best, in their line of products. The value is incredible and the materials, machining and quality of these gears and final drives is unsurpassed. You won't find a better quality product for the price anywhere. Manufactured from the finest forged chromoly steel and machined to exact tolerances, these gears will out perform and outlast any competing brands on the market. Designed for racing, tested and sold by racers!

This 5th gear set can be used to compliment the Gear-X K-series Close Ratio Kit or it can be used in conjunction with the OEM gear set. Gears are good for up to 500hp.

Optional Ratios: 0.958 and 1.08

Vehicle/Transmission applications: 02-05 Civic Si/02-06 RSX base (K20A3), 02-06 RSX Type-S (K20A2/K20Z1), 06-11 Civic Si (K20Z3).