I replaced my +4 seater springs with the anti tramp 4 seater spring from BCC as recommended by Peter Ballard of SSL.
They are available through SSL though I picked mine up from BCC as they are local to me at Redruth in Cornwall.
The anti tramp carry the lower leafs further forward which stiffens and supports the axle better.
Works very well with Spax adjustable shocks from SSL.
Just 4 clicks on the shock gives a good ride and no crashes.
This is my 4th and by far and away the best spring for the 4 seater.
The anti tramp 2 seater should also be good for the same reason.
