Introducing the Rear Fork Main Shaft Screw - 40Cr, a purpose-built fastener engineered to secure your rear fork assembly with uncompromising strength. Crafted from 40Cr steel, this screw brings robust reliability to your suspension setup, designed to withstand the demands of riding, vibration, and road shocks.

Why 40Cr matters for this screw

• High tensile strength and toughness inherent to 40Cr steel, supporting durable performance under load
• Heat-treated to enhance hardness and wear resistance, helping the screw resist deformation over time
• Balanced toughness and resilience, reducing the risk of fatigue in dynamic rear suspension environments
• Chromium-containing alloy contributes to improved corrosion resistance in everyday riding conditions

How this screw supports your ride

• Secure rear fork alignment: maintains proper positioning of the main shaft so the suspension behaves predictably
• Reliable fastener for everyday riding and spirited maneuvers, reducing the need for frequent retightening
• Durable construction extends the life of surrounding components by resisting wear and loosening from vibration

What to expect in use

With precise machining and finished threads, this screw installs cleanly and engages consistently. For optimal performance, pair it with the correct accompanying hardware and consult your service manual for recommended torque values. Regular inspection of the rear fork assembly is advised; replace if threads show wear or damage to avoid compromise.

Ideal for

• Bike and motorcycle enthusiasts performing rear suspension maintenance or upgrades
• DIY mechanics replacing worn or damaged main shaft screws in the rear fork
• Shop technicians seeking a durable, high-strength screw manufactured from 40Cr steel