Rigshru Trimmer Gear Head Gearbox Replacement for Husqvarna 525L Series – Complete Kit

Overview

Rigshru presents a gear head gearbox replacement kit crafted for dependable performance on popular Husqvarna trimmers. This complete set brings together a sturdy gear head, thrust components, and durable fasteners, designed to simplify maintenance and reduce downtime. Expect a precise fit, thoughtful hardware, and a straightforward replacement process that helps you get back to work with confidence.

What’s included

The packing list covers every part needed for installation, so you can swap in one session without hunting for compatible pieces.

• 1 x Gear Head
• 1 x Thrust Plate
• 1 x Thrust Washer
• 1 x Rider Plate
• 2 x M10 Left-Hand Thread Collar Nuts
• 2 x Stainless Steel Screws

Specifications and fit

Key dimensions help ensure compatibility and stable operation. The gear head features 10 teeth, with an operating rod diameter of 1 inch (25.4 mm) and a bottom section with 7 teeth. These specs are designed to align with standard trimmer gear head geometry, supporting reliable engagement during cutting tasks.

Compatibility and fit

This replacement is designed for a broad range of Husqvarna models, including 525L family variants such as 525L, 525LK, 525LS, 525LX, 525RJD, 525RJX, 525RK, 525RS, 525RX and 525RXT, as well as related models in the 535LST line. It also covers a wide set of Jonsered variants such as BC2125, GC2125, and GT2125. To ensure a clean match, please verify your trimmer gear head model before ordering and confirm the replacement part numbers if needed.

• Husqvarna 525L and related 525-series models
• Husqvarna 525RXT and 535LST families
• Jonsered BC2125, GC2125, GT2125 family

Why choose Rigshru

• Complete kit for quick replacement and installation
• Durable construction designed for steady gear engagement
• Precision fit that supports consistent performance
• Left-hand thread collar nuts for secure, reliable assembly
• Wide compatibility across multiple Husqvarna and Jonsered models

Real world use and tips

Intended for DIY enthusiasts and professionals alike, this kit offers a practical upgrade when a trimmer shows signs of wear in the gear head area. During installation, you will replace worn components with a ready-to-use set, reassemble the housing, and test the trimmer with a slow, controlled pass. The result is smoother feeding and steadier cuts, with less need for improvisation or separate part hunting. When handling metal parts, a clean workspace and a light touch with the fasteners help preserve thread life and ensure crisp torque on final assembly.

Care and installation notes

Before installing, inspect alignment and confirm hardware type and thread direction. After assembly, run a brief idle test to verify smooth operation before returning to full trimming tasks. This approach helps maintain consistent performance over time without assuming guarantees.