Castelgarden, Mountfield, Stiga and Alpina Lawnmower Blade Boss: 125463200/0, 1134-9159-01, 1136-0221-01
Upgrade your GGP mower's blade mounting system with the Tri-Lock 3-Point Heavy Duty Blade Boss, designed to provide a stronger, more secure connection between the blade and blade spindle.
Replaces: 125463200/0, 1134-9159-01, 1136-0221-01, 1254632000, 1134915901, 1136022101
Unlike a conventional blade boss, the Tri-Lock system uses three positive drive points which engage directly with the matching blade. This provides secure blade location while distributing rotational drive across three separate contact points.
The result is a stronger and more positive blade-to-boss connection, designed for demanding mowing conditions and improved durability.
Why Choose the Tri-Lock Blade Boss?
3-Point Positive Drive
Three drive points engage directly with the matching blade, providing positive mechanical engagement between the blade and boss.
Improved Torque Transfer
The three-point system distributes rotational drive across multiple engagement points, providing efficient and secure transfer of power from the spindle to the blade.
Reduced Blade Slippage
Positive engagement between the blade and boss helps prevent unwanted movement or slipping of the blade during operation.
Improved Load Distribution
Rather than concentrating the rotational load around a conventional mounting arrangement, the Tri-Lock design distributes drive forces across three separate points.
Secure Blade Location
The three-point arrangement positively locates the blade on the boss, helping maintain correct positioning during installation and operation.
Heavy-Duty Construction
Designed and tested for demanding ride-on mower applications where durability and secure blade drive are essential.
Tested & Proven Design
This Tri-Lock system has been tested to ensure reliable blade engagement, strength and durability in working conditions.
Designed as an Upgrade
This Tri-Lock system provides an upgraded blade mounting arrangement for compatible Castelgarden / GGP manufactured ride-on lawnmowers, including machines sold under brands such as Castelgarden, Mountfield, Stiga and Alpina.
Key Features
Tri-Lock 3-point positive drive system
Three separate blade engagement points
Strong, secure blade-to-boss connection
Improved torque transfer
Improved distribution of rotational load
Helps reduce blade movement and slippage
Positive blade positioning
Heavy-duty construction
Tested and proven design
Ideal replacement or upgrade for compatible Castelgarden/GGP mower decks
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