The new Niner ROS 9 Plus is like the ROS 9, only bigger, making room for 29×3.0 (aka 29+) tires.
The frame is 4130 chromoly steel, just like the original ROS9, and all of the key features carry over. They wanted the same all-mountain “fun” geometry of the standard ROS, just with bigger tires.
One key difference is the non-suspension corrected steel fork. It’s the same 4130 material as the frame and gets tapered legs to provide that classic, comfortable steel feel. It uses the Maxle thru-axle at the bottom and a tapered steerer tube, the latter a rare feature on steel forks. Axle to crown is 470mm, same as their carbon and RDO forks. Niner’s product manager Barrett James said they kept the fork legs shorter (as in, non-suspension corrected) for a couple reasons. First, longer steel legs would have meant a much heavier fork to keep them strong enough to pass testing. Second, the geometry of the bike is actually built with suspension in mind, so the ROS9 Plus is ready for the Rockshox Bluto (or any other fat bike suspension fork that may be coming out). Head angle will slacken by about a degree with the taller front end. Out of the box, though, you’ll get a snappy handling, terrain crushing rigid bike.
Read on for tons of close up pics plus images of the very special IMBA edition paint job on the bike you can win!