Honda Integra DC5 / Civic EP3 K-Series gear set. Designed as a drop in replacement kit for a full race K-20 or K-24 where close ratio applications are required and also high top speeds over 130mph are still attainable without over revving the engine. Works extremely well with a 4.058. 4.03, 4.7 & 5.08 final drive gear sets. Kit rated up to 500HP. The Kit consists of a custom main shaft, 4 custom main shaft gears and six counter shaft gears. Ratios are as follows; 1st – 2.313, 2nd -1.650, 3rd -1.304, 4th – 1.080, 5th – 0.920 and 6th – 0.807. These Pro Spec III gear sets can be used in the late ’06 Civic SI gear box, however you must change the dual cone type 5th & 6th gear synchros.