Undo the bottom shock absorber bolt with a 16mm spanner and an E14 socket.
Remove the bolt and pull the bottom of the shock away from the mounts.
Do the same with the top bolt and remove the shock absorber from the car.
Jack the car body up and allow the suspension beam to hang down as low as possible.
Generally, spring compressors aren't needed as long as you aren't a weak girl.
Grab the spring with both hands, squeeze the coils and lift over the lower spring retainer.
The spring will come out with a rubber fitting on the top.
Unscrew the rubber and screw it onto the new spring.
Push the rubber up, compress the spring by hand and slot over the lower spring retainer.
Lowered springs will be easier to refit as they are shorter overall.
Refit the upper nut and bolt hand tight.
Hold the bottom of the shock absorber in place and place a jack under the swing arm.
Slowly jack the suspension up until the lower shock bolt goes all the way through.
Fit the nut hand tight and make sure that everything looks right..
Tighten the top and bottom bolts to the 65Nm using a torque wrench.
Take the car out of gear, lower the suspension and refit the drive shaft into the hub.
Refit the tie bars as shown in the driveshaft removal How2.