1,made of hard rubber compound 2,can be fitted by the average DIY motorist without special tools 3,two require per vehicle

As you know most standard car spring are designed for the comfort of the passengers and are not strong enough to take the extra loading of towing or heavy weight carried.

So we have to use the spring assister, it's made of hard rubber compound and can be fitted by the average DIY motorist without special tools, it's designed to assist rear suspension when towing,

takes two spring assisters per vehicle

SPO3	170mm(wide)	inner dia95mm	outer dia140mm	thickness 35mm	black color
SPO4	190mm(wide)	inner dia100mm	outer dia150mm	thickness 45mm	black color
SPO5	210mm(wide)	inner dia120mm	outer dia170mm	thickness 67mm	black color

spring assister for towing