Central Wheel is a NINER Demo Center
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The S.I.R. 9 is the most versatile bike in the Niner stable, fusing the “steel is real” feel of Reynolds tubing with the ability to run the frame as either a geared bike or single speed. The S.I.R. 9 uses the same custom drawn Reynolds 853 tubing as the M.C.R. 9 and combines it with Niner’s ultra-light eccentric bottom bracket. Custom “breezer” style forged dropouts have a replaceable alloy derailleur hanger and come with an insert piece for running the bike as a single speed to eliminate the unnecessary derailleur hanger for a clean look

The E.M.D. 9 (Eat My Dust) is the least expensive frame in the Niner lineup, but this frame went through the same design process and had to meet the same design expectations that we require from every Niner frame. Even though we were using a less exotic material, it was our primary goal with the E.M.D. 9 to overcome the idea that all aluminum frames are harsh. Starting from scratch, we developed a 7005 series tube set that met these needs. In addition, the rear triangle receives the same s-bend curves as the Air 9, allowing for some vertical compliance of the rear wheel, meaning your body doesn’t have to take it all.

The Air 9 is our super light geared-only frame utilizing custom drawn Easton GX2 Scandium. Combining a truly advanced proprietary alloy with higher strength properties than 7005 series aluminum with the rare earth element of scandium, Easton achieved the impossible: a super lightweight tube with a compliant ride characteristic. Blending Easton’s tubing with custom drawn and shaped rear s-bend chain stays and seat stays, the Air 9 is a light, agile ripper of a frame that offers a surprising amount of comfort to the long haul.