SKU:WSM-TEGR001
Honda 35% Gear Reduction
- In stock
Special Discount at Checkout
$100.00 OFF Gear Reduction + 4 Aztex Mud Tires
Precision gears made from 4120 alloy steel. Kit includes all new components, no stock cores required. Factory fit and installation process.
If you have questions about fitment, send us a message on our Facebook page for a quick response:
https://www.facebook.com/terachetires
Gear Reduction Information
Part Numbers:
- Replaces OEM part numbers (23120-HP0-A00 & 22100-HP0-A00) for a 35% gear reduction:
Tire Recommendations:
- Rancher: 30x9x14 Aztex
- Foreman: 32x9x14 Aztex
Compatibility:
- Fits manual foot shift (e.g., TRX420FM) and manual electric shift (e.g., TRX420ES/FE) models:
Additional Recommendations:
- For Electric Shift (ES/FE) and Pioneer 500/520 machines, it is recommended to install SpeedoDRD set at +35% for proper shifting.
Exclusions:
- Not Compatible With: DCT double clutch transmission models (e.g., TRX420FA & TRX500FA)
Model Fitment
Rancher 420
- Models: TRX420FM, TRX420FE
- Years: 2007-2025
Foreman 500
- Models: TRX500FM, TRX500FE
- Years: 2005-2019
Foreman Rubicon 500
- Model: TRX500FM
- Years: 2015-2019
Foreman 520
- Models: TRX520FM, TRX520FE
- Years: 2020-2025
Foreman Rubicon 520
- Model: TRX520FM
- Years: 2020-2025
Pioneer 500/520
- All years (requires SpeedoDRD)
Warranty
Each Terache Gear reduction carries a Limited Lifetime warranty against manufacturing defect to the original purchaser. Additionally, Terache will cover up to $1,000.00 in parts and labor towards replacing the gear reduction and
repairing damage associated with a gear failure. Warranty claims are
subject to review and approval by the Terache technical team.
Complete the set
Upgrade your Honda ATV with the ultimate off-road combo—our 35% Gear Reduction Kit and Aztex XL tires. This bundle ensures maximum torque, improved traction, and better control in tough terrain. The gear reduction enhances low-end power, making it easier to turn larger tires without straining your engine, while the tires provide the grip needed for deep mud, trails, and rugged conditions. Designed to work together seamlessly, this package optimizes performance, reduces drivetrain stress, and transforms your ride into a true off-road machine.

FAQs (Frequently Asked Questions)
Whether you need assistance with payment methods, delivery schedules, or other inquiries, you’ll find clear and concise information here to help guide your experience with us.
Are there any extra delivery charges?
We are located in Southern California. We offer free shipping to all Continental US orders. We currently do not offer international shipping.
How long will delivery take?
Delivery will take 5 business days after your order has been processed.
What exactly happens after ordering?
We start processing orders once the order is placed and payment is confirmed. It can take up to 24 hours for our fulfillment team to package and have it ready for shipment.
Where can I view my sales receipt?
After the order is placed, you will receive an order email confirmation with the receipt. You can also create an account and log in to review your receipt.
Is Terache.com safe?
Our website is equipped with SSL and all information that you submit to us is encrypted.
How long do I have to return an order?
If the product is new and unused, you can return the product anytime up to 30 days from the time it was delivered.