Rear Fork Main Shaft Washer - 45#

The Rear Fork Main Shaft Washer - 45# is a precision-engineered spacer designed to sit where your rear fork’s main shaft meets supporting components. Crafted from sturdy 45# steel, this washer provides a dependable foundation for proper alignment, helping to minimize play and support smooth, consistent suspension performance.

Why this washer stands out

Not all spacers are created equal. The Rear Fork Main Shaft Washer - 45# is machined to tight tolerances for a flush, centered seating, so your rear fork assembly stays true under load. Its 45# steel composition balances high strength with excellent machinability, making it a durable, reliable replacement part that resists deformation during cycles of compression and rebound.

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  Material: 45# steel, chosen for its strength and workability to provide a stable seat on the main shaft.
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  Precision fit: Consistent inner and outer dimensions ensure a wobble-free seating with adjacent components.
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  Direct replacement capability: Engineered to align with standard rear fork main shaft configurations, making it a dependable OEM-style substitute.
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  Performance benefits: Helps maintain correct preload, reduces axial play, and supports longer bearing life by preserving proper alignment.
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  Easy installation: Designed to drop into place with minimal fuss during routine maintenance or a rebuild.

Who this is for

This washer is ideal for technicians and DIY enthusiasts performing maintenance, rebuilds, or upgrades on rear fork assemblies that use a dedicated main shaft washer. It’s a practical upgrade for riders and owners who want to preserve suspension predictability, avoid unwanted play, and extend the life of bearings and seals.

Practical tips for best results

• Inspect seating surfaces on the main shaft and adjacent components for wear or debris before installation.
• Replace worn washers in conjunction with other rear fork service parts to maintain consistent alignment.
• Clean all contact surfaces and verify the washer sits flush against its mating faces after installation.
• Check rear suspension function after installation to confirm smooth operation and stable preload.

Choose the Rear Fork Main Shaft Washer - 45# for a reliable, purpose-built replacement that supports precise alignment and durable performance in your rear fork assembly. Add it to your cart and maintain the integrity of your suspension system.