King Spring Differences

[odysey]

Just wondering if someone can tell me the difference in King Springs between KHFL-150SSL+ and KHFL-150SSLHD+.

I understand what the SSL refers to, but can't find any information on what the HD means.

Thanks

[TinSnips]

HD is heavy duty - higher spring rate.

[odysey]

Cool thanks for that, thought it was some simple like that. Appreciate the quick response

[LachieSV6]

Heavy duty is obviously recomended for carrying loads or towing regularly, in my case i have a stereo installed which adds a bit of weight and i tow quite often so i have them in the rear. and it rides really well! just so you get an idea