Bolting oversized tires onto your Polaris kills your low-end torque, and this SuperATV Transmission Gear Reduction Kit restores that grunt with a 13%, 25%, or 38% reduction for punchier acceleration. When you upsize tires or add heavy accessories, your machine feels sluggish because the stock gearing can no longer turn that extra rolling mass efficiently. A gear reduction lowers your ratio inside the transmission to put more torque to the ground.
Because the reduction happens inside the gearbox rather than at the hub, you get a clean, efficient power increase without adding lift or unsprung weight. Choose the reduction level that matches how big you are going.
Key Features
- 13%, 25%, and 38% gear reduction options to match your build
- Made from durable 8620 chromoly steel
- Heat-treated and precision-ground gears for an improved contact pattern
- Smoother, quieter operation than stock under load
- Restores torque lost when running larger tires
- Internal reduction adds no lift or unsprung weight
Built To Solve: Lost Torque From Oversized Tires And Heavy Loads
- Restores sluggish low-end acceleration after upsizing tires
- Helps turn bigger tires without straining the clutch or transmission
- Improves slow-speed crawling and pulling under heavy loads
- Reduces the bogged-down feel from added accessories and weight
- Gives a cleaner torque gain than adding lift or unsprung weight at the hub
Best For: Polaris Owners Running Bigger Tires And Technical Terrain
- Riders who added larger tires and lost punchy acceleration
- Mud, rock, and technical riders who need maximum low-end torque (38%)
- Trail and mixed-terrain riders stepping up tire size (25%)
- Owners wanting a mild power bump on stock or slightly larger tires (13%)
- Builders who want more torque without changing ride height
Specifications
- Material: 8620 chromoly steel
- Reduction options: 13%, 25%, and 38%
- Gear treatment: Heat-treated and precision-ground for improved contact pattern
- Operation: Smooth, quiet meshing under load
- Install location: Internal transmission gear reduction
- Warranty: 90-day warranty against manufacturing defects
Fitment
This gear reduction kit fits a wide range of Polaris models and years. Because Polaris used several different reverse-shaft configurations, the correct kit is matched to your machine's OEM reverse shaft and tooth count rather than by model name alone. SuperATV offers multiple reverse-shaft OEM options (for example 3235224 / 29T, 3235380 / 27T, 3235451 / 25T, and 3236689 / 23T) covering dozens of Polaris part-number applications. Confirm your exact Polaris model, year, and OEM reverse-shaft number before ordering. Fitment is not guaranteed on applications not listed by the manufacturer.
FAQ
What does a transmission gear reduction kit do for my Polaris?
It lowers your gear ratio inside the transmission to deliver more torque to the ground. That helps with bigger tires, slow-speed crawling, and heavy loads, improving acceleration and low-end power without sacrificing reliability.
Which gear reduction percentage should I choose?
Choose 13% for mild gains on stock or slightly larger tires, 25% for bigger tires and mixed terrain, or 38% for maximum torque in mud, rocks, and deep technical riding. Bigger tires and heavier builds generally call for a larger reduction.
How do I know which kit fits my Polaris?
Fitment is matched to your machine's OEM reverse-shaft number and tooth count, not just the model name. Confirm your Polaris model, year, and reverse-shaft OEM number against the fitment list before ordering.
Will this make my Polaris slower on top speed?
Yes. Reducing your gear ratio trades some top-end speed for more torque. Most riders find the trade worthwhile because the added low-end power dramatically improves real-world performance with larger tires or technical terrain.
How hard is it to install a gear reduction kit?
Installation requires opening your transmission, so basic mechanical experience and standard shop tools are recommended. SuperATV provides step-by-step instructions, and live guidance is available through their Virtual Mechanic service.
Is a gear reduction better than portals for more torque?
Portals add both lift and reduction at the hub, while this kit delivers reduction inside the gearbox for a direct, efficient power transfer. If you want more torque without changing ride height or adding unsprung weight, internal gear reduction is the cleaner solution.
Why SuperATV
SuperATV builds drivetrain parts under its Gear Driven Performance line, engineering gears for strength and smooth operation. This gear reduction kit uses 8620 chromoly steel with heat-treated, precision-ground teeth so it holds up to the added stress of bigger tires and aggressive riding.
Complete Your Polaris Torque And Tire Upgrade
A gear reduction kit is the fix for lost torque after going big on tires. Before ordering, confirm your Polaris model, year, and OEM reverse-shaft number, then choose the 13%, 25%, or 38% reduction that matches your tire size and terrain. Pair it with a heavy-duty clutch kit, upgraded belt, and reinforced axles to keep the rest of your drivetrain strong under the added load.
