The shock itself is exactly what I needed except it's 160mm and not 180mm like the one my ebike came with (not the same ebike that is sold on their website). I didn't see the length listed anywhere and I couldn't make it out in the pictures, but since this is the only listing for this brand of shock I could find anywhere I took a gamble without asking the seller first. So it's my fault I just wish I could find the right one. The shock that came with my ebike was 180mm but was way too stiff for my weight. Tried this one and it was the perfect stiffness but it bottoms out my tire on the frame under load. Oh well, you win some and you lose some. Time to continue my search.