THREAD SPRING PRELOAD Thread Spring Preload or adjustable spring screw. By threading the cylindrical shock absorbers, user can turn the preload to fine tune the spring and tighten a provided bolt to fix the ring in its posit...

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THREAD SPRING PRELOAD Thread Spring Preload or adjustable spring screw. By threading the cylindrical shock absorbers, user can turn the preload to fine tune the spring and tighten a provided bolt to fix the ring in its position LENGTH ADJUSTABLE Adjustable length. It helps increase the length of the shock absorber. The two types can be upgraded to 10 mm or adjustable lengths +/- 5 mm. Length: 245MM-255MM Red spring