I bit the bullet and purchased the Hyperpro Kit front & back +20mm springs after a near collision this week. I still tweaked the suspensions a little and I must say; LESS compression damping and MORE rebound worked fairly well for some reason...
We still suffer from an underweight front and boy did I find out. I lost traction when accelerating to overtake a truck (I nearly rear ended it) and it got me so angry at the bike that I phoned Hyperpro when I arrived at work and explained everything (I'm Dutch and they are a well known Dutch suspension company). They are fully aware of the AT's suspension problem. They told me that after I install their products, I can come by the workshop and their mechanics will check and tweak my settings if needed, free of charge.
I do want to highlight that the settings I posted here really do make the bike far more manageable for me than stock settings, but the front end is and will always stay underweight (thus less traction) because the back get's compressed to much.
* €108,- Hyperpro Back spring (black).
* €170,- Hyperpro Front forks.
* €65,- Upside Down fork tool.
* €49,- Motorcycle spring compress tool.
* €15,- new fork seals.
* Fork oil is included in the Hyperpro kit.
I was told not to purchase the Heavy Duty version. That version is meant for serious globetrotters and heavy equipped police motorcycles.
All in all I spend around €420,-, something I tried to avoid by tweaking the stock settings. But hey, I found out first hand that you can't fight the laws of physics...
The kit comes with a complete and professional instructions manual. I'll also be following YouTube video's because I prefer seeing it too, since I never dismantled an upside-down fork before (only 'normal' ones). I'll be working on the bike this weekend, if my spring compression tool arrives on time...
I will give an update in this thread for anyone who's interested.
Last edited by ronbosgra; 10-10-2019 at 05:27 AM.