Mega Jimny is proud to become a stockiest of SUMO Gearsets. SUMO Japan are world renowned for making some of the best reduction gearsets in the world.
Fitting SUMO reduction gears take a Jimny's offroad capabilities to the next level. Reduction gears work by reducing the speed in which your wheels turn in relation to engine RPM, meaning you can make your Jimny a lot more controlled when climbing up rocks or steep inclines - especially if you have a manual transmission in your Jimny, as you won't need to constantly 'ride' the clutch to get going when you're in a sticky situation.
Designed to ensure performance, reliability, and strength - every Sumo gear is precision machined out of high-quality billet material in Japan by an O.E. gear manufacturer using the best machines and tooling available ensuring smooth, quite operation.
We offer a few different SUMO gearsets to choose from, ensure you are picking the right transmission and ratios for your application. Fitting the gearsets that give a reduction in high range gearing is suitable for Jimny's with 30/31" or bigger tyres as this directly helps with highway speeds and inclines.
1) SUZ-JIM-JB74-1 - Manual Transmission
High range: -17%
Low range: -17%
2) SUZ-JIM-JB74-2 - Manual Transmission
High range: -17%
Low range: -104%
3) SUZ-JIM-1515-T5 - Automatic Transmission
High range: -15%
low range: -15%
4) SUZ-JIM-15104-T5 - Automatic Transmission
High range: -15%
low range: -104%
5) SUZ-JIM-0077-T5 - Suitable for both Automatic and Manual Transmissions
High range: Factory ratio is kept
Low range: -77%
Please note:
- We recommend installation of these gearsets are to be done by a licensed professional as some grinding of your transfer case may be required for fitment.
- These gearsets are designed to work on JB74/JC74 Suzuki Jimny's, however they can also work on other old model Jimny's as well. We recommend checking SUMO's official website for compatibility with older model Jimny's before purchasing a set from us as we only specialize in parts for the JB74/JC74 Suzuki Jimny platform.


