Close ratio gear set.
Conversion set to put your R154 gears close together to keep your engine nicely in the powerband.
Gear ratios per gear:
1st - 2.701 (new/adjusted)
2nd - 1.614
3rd - 1.215
4th - 1,000 (Original)
5th - 0.753 (Original)
Figure 2 has a printout from our simulation tool where Bin B (orange) has the close ratio kit. With these ratios, the gearbox becomes better suited for various motorsport applications due to the longer 1st gear and close ratios, the engine can stay in the powerband better.
Our gear kit is designed for the latest version of the R154: 33030-2A600 (JZX110). With this gear kit, you can reuse the original (OE) parts of the standard gearbox.
You can also use the gear kit for the 33030-2A600 (JZX100) gearbox, provided you replace the following parts:
For older gearboxes, replace the old original parts with the new types to build the latest version of the R154.
Please contact us for more information