When I called Progressive last May they advised that the 412's are not available in HD with the 13" - only shorter sizes (even though there's multiple online listings for HD in the 13"). Since I didn't want a shorter shock, I went with the standard 13". This was a mistake....set on the heaviest setting they are OK solo or 2 up around town, but 2 up with gear on longer or more aggresive rides they're not really adequate on my IS. Gonna have to change them out....probably to the 444's as many on here suggest. Pretty pricey for me though, paying around a buck forty with my poor CDN $
Will be selling my 8 month old 412's
