Variety Gear Box Solutions for Agricultural Implements
With over 1 decade of hands-on experience in the agricultural equipment industry, we understand that a dependable gearbox is the heart of any power-driven implement. At FIMIC Implement, we don’t just sell parts - we offer lasting solutions that keep your equipment running smoothly in even the toughest working conditions.
Our gearbox collection is specifically curated for farmers, landowners, and implement dealers who demand durability, precision, and performance. Whether you're operating a rotary cutter, tiller, or post-hole digger, each compatible gearbox we offer is engineered to meet or equal to OEM standards.
Every model is inspected for shaft integrity, housing durability, and gear alignment, and is compatible with popular tractor and implement brands, such as John Deere, Howse, Bush Hog, Omni, or others. We’re happy to help you find the right match.
When a gearbox fails, downtime costs money. That’s why FIMIC Implement stands behind every unit with reliable customer support and proven replacement options. Whether you're repairing a well-worn implement or building a new setup from the ground up, we’ll ensure you have the right gearbox every time.
Tractor & Rotary Cutter Gearboxes Built for Real Field Work
Selecting the right tractor gearbox is one of the most important decisions when maintaining or rebuilding a rotary cutter, brush hog, or batwing mower. A mismatched or under-rated gearbox doesn’t just reduce performance—it increases vibration, overheats driveline components, and often leads to premature PTO shaft or seal failure.
At FIMIC Implement, we supply HP-rated rotary cutter gearboxes engineered for real agricultural workloads, not light-duty shortcuts.
Our gearbox collection is designed for operators, mechanics, and landowners who need reliable PTO power transfer across a wide range of tractor sizes and cutting conditions. Whether you are replacing a worn unit on a compact tractor or rebuilding a heavy-duty batwing cutter, choosing the correct horsepower rating, spline configuration, and gear ratio is critical for long-term durability.
Gearboxes Matched by Horsepower, Spline, and Application
Every gearbox in this collection is clearly matched to its intended horsepower range, helping prevent one of the most common causes of failure: installing an underrated gearbox on a high-torque application. We stock 40HP, 75HP, and 150HP gearboxes suitable for light-duty rotary cutters, mid-range brush mowers, and commercial-grade batwing systems. Each unit is selected to handle sustained load, shock torque, and uneven cutting conditions without overheating or internal gear damage.
Spline compatibility is just as important as horsepower. Our PTO gearboxes support common agricultural standards, including 1 3/8” 6-spline and 1 3/4” 20-spline configurations, ensuring proper driveline engagement and reducing vibration that leads to bearing wear and oil leakage. Proper spline matching also protects downstream components like PTO shafts, yokes, and CV joints.
OEM-Compatible Replacement Gearboxes You Can Trust
Many customers come to us searching for John Deere, Bush Hog, or Woods gearbox replacements that fit correctly without paying OEM pricing. Our aftermarket gearboxes are engineered for OEM-compatible mounting patterns, shaft dimensions, and gear ratios, making them suitable replacements for common rotary cutter models while maintaining safe operating limits.
With decades of hands-on experience supplying tractor implements and driveline components, we focus on cast housing strength, bearing quality, oil capacity, and internal gear tolerances—details that directly impact service life in demanding field conditions.
If you are unsure which gearbox fits your cutter, tractor PTO, or horsepower range, our team can help you match the correct unit the first time—saving downtime, returns, and costly drivetrain damage.