Enhance the safety and stability of your folding bike with the Tern Safety Pin – Physis Series, a compact yet critical spare part designed to keep your bike’s physis stem securely locked during rides.
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Dimensions & Compatibility
The safety pin measures 6 mm in diameter and 48 mm in length, making it precisely-sized to fit the Physis 3D handlepost joint. It’s compatible with a wide range of Tern folding bikes, including the Verge X30h, Verge X20, Verge S11i, Verge P18, Link P9, Link P7i (including Coaster version), Eclipse series, and others. -
Material & Design
Crafted from durable metal with a sleek black finish, the pin blends seamlessly with the stem assembly while providing reliable performance under repeated folding actions. -
Purpose & Function
It acts as the final security lock in the folding mechanism—keeping the handlepost securely fixed once the lever is closed. Without a properly functioning safety pin, the joint may become unstable or unsafe to ride.
Usage & Maintenance Instructions
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Installation
When servicing or reassembling the Physis stem, align the joint lever in the closed position and slide the safety pin through both alignment holes until it clicks into place. -
Routine Checks
Before each ride, confirm the pin is fully engaged—secure and flush with the joint housing. A loose or missing pin may lead to unintended folding or compromised ride safety. -
Replacement Guidance
Ideal to keep as a spare—over time, the pin may experience wear or loss. A fresh pin restores your joint’s full stability and maintains folding integrity. -
Storage Tip
Since it’s small and lightweight, the pin is easy to misplace. Use a magnetic tray during maintenance to prevent accidental loss.
Precautions
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Use Only Genuine Parts
Always use the official Tern Physis Series safety pin. Using mismatch parts may result in poor fit, joint instability, and potential safety hazards. -
Inspect Regularly
Replace the pin if there are signs of bending, corrosion, or excessive wear. A compromised pin can lead to joint failure while riding. -
Secure Handling
Keep the pin away from water or corrosive elements when stored. Clean it before reinstallation if it’s exposed to grit or grime.
