280 mm chrome rear shock absorber for Japanese Honda Dio scooters (wording taken from the name). It dampens rear suspension oscillations and keeps the wheel in contact with the road.
Replace it if oil is leaking, the suspension sags, it knocks, or the scooter sways on bumps. Compare the length and mounting with the standard shock absorber.
Parts are chosen by the model and the number in the name (Dio, Lead, Tact, and the version): dimensions can differ between versions, so check the part before installing it.
