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Unleashing the True Off-Road Potential of the Jimny with Reduction Gears

Jimny Gen4 with 30s

When it comes to enhancing the capabilities of a Suzuki Jimny for off-road adventures, there are few upgrades as transformative as installing reduction gears. Having deliberated over the decision due to the considerable price of approximately R16k, I finally took the plunge. And let me tell you, the impact on the performance and drivability of my Jimny, equipped with 30-inch tires, has been nothing short of remarkable.

On-Road Performance: A Delight to Drive Again

One of the main reasons I decided to invest in reduction gears was to address the issue of mismatched gearing resulting from the larger tire size. The stock setup just couldn’t handle the additional load and power requirements effectively, leading to sluggish performance and constant gear shifting. After thorough research, I opted for the 17/87% reduction gear ratio, which promised to restore the balance and unlock the true potential of the Jimny.

The difference I experienced after installing the reduction gears was nothing short of astonishing. On paved roads, the Jimny became a delight to drive once again. The gearing correction ensured smoother acceleration, eliminating the need for excessive gear changes. Climbing hills at highway speeds became effortless, and Jimny maintained a stable and confident stride. With a 9% increase in tire size, the torque delivery and low-end power were significantly improved, resulting in an overall more enjoyable and responsive on-road experience.

Off-Road Adventures: The Game-Changing 87% Low-Range Reduction

However, it was off the beaten path where the true magic of reduction gears came to life. The 87% low-range reduction provided an entirely new level of capability for tackling challenging terrain. The ability to crawl up steep inclines at minimal speeds instilled a sense of control and reduced the risk of damage to both the vehicle and the trails. The added low-end torque made navigating obstacles a breeze, with improved traction and increased wheel control. The Jimny felt unstoppable, inspiring confidence and enabling me to venture into more demanding off-road environments.

One crucial aspect to consider when opting for reduction gears is the impact on the vehicle’s drivetrain components, particularly the clutch and gears. Prior to the upgrade, the mismatched tire size had put significant strain on these components, affecting their longevity. With the reduction gears in place, not only did the gearing mismatch issue disappear, but the strain on the clutch and gears was significantly reduced. This meant a longer lifespan for these critical components, ensuring peace of mind and minimizing the likelihood of costly repairs down the line.

The Reduction Gears

The reduction gears I chose were sourced from, a reputable provider known for their quality products. While the gears themselves proved to be well-crafted and durable, it’s important to note that they do generate noticeable noise at higher speeds and when engaged in low-range mode. This is a trade-off for the improved performance and versatility they offer. Additionally, it’s worth mentioning that the manufacturing time for the reduction gears was on the longer side, requiring patience during the waiting period.

Installation Challenges: Engaging Low-Range Mode on Inclines

During the installation process, I encountered some challenges with engaging low-range mode on inclines or declines. It required additional effort and finesse to ensure proper engagement, particularly in uneven terrains. While this proved to be a minor inconvenience, it’s essential to be aware of this potential quirk during operation.


In conclusion, the decision to invest in reduction gears for my Jimny has proven to be one of the best choices I’ve made as an off-road enthusiast. The considerable initial cost was undoubtedly justified by the substantial improvements in performance, drivability, and off-road capabilities. By addressing the mismatched gearing caused by larger tires, the reduction gears effectively optimized the Jimny’s power delivery and torque, unleashing its true potential. Despite the minor noise and occasional challenges with engaging low-range mode, the overall benefits far outweigh these minor drawbacks.

If you’re seeking to maximize the off-road prowess of your Suzuki Jimny, especially after increasing the tire size, I wholeheartedly recommend considering reduction gears. Be prepared to embrace a new level of control, versatility, and confidence as you traverse rugged terrains and conquer new adventures. With reduction gears, the Jimny evolves from a capable 4×4 into a true trail-conquering machine, opening up a world of thrilling possibilities for off-road enthusiasts.

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