RM80 for front and rear, postage to door step

Alza spring is very soft originally. Now it feels more stiff especially over bumper.

Original condition - When over bumper at fast speed, the car will bounce few times before it is stable again
With coil spring buffer - When over bumper at fast speed, the car will back to stable almost immediately

Overall experience - the car not so wobble, a cheap add on for slight comfort and driving experience. As now haven't try to full load the car yet with 7 people, but it looks promising.

Recommendation - Need to install it properly especially the buffer lining to the spring, otherwise the rubber might go into bad shape or have sound.