Ohlins Rear Shock Model KT301 for KTM Duke 390 And RC390 RC 390. Condition is Like-New with under 200 miles. It is sprung with the original 60013-34 spring. It's 160mm with a 100 N/mm spring rate perfect for riders between 150-180 lbs. All others weight easily adjusted for with the preload. I took it off this bike that was originally intended to be a race bike. Now i'll put the stock shock and lowering kit for it for my sister, a shorter rider.