Niner

SIR 9 2-Star Single Speed Complete Bike

We take extra care to ensure your bike arrives ready to ride. Our meticulous build and testing process takes about 4 business days before your bike is ready to ship.
This attention to detail guarantees that your bike will be easy to assemble on arrival. Please note that most bikes do not come with pedals. To make the most of your new bike right away, be sure to select a pair of pedals when checking out and we will include them with the build!

In a world of carbon super bikes, the SIR 9 stands as a reminder to the viability of steel as a frame material. Niner collaborated with Reynolds in the design of this frame, employing their 853 DZB (Double Zone Butting) tubing. Using different butting profiles, Niner is able to keep the frame strong where it needs to be, but save weight and add compliance where it's necessary. 

• Reynolds steel tubing
• Tapered head tube for a stiff front end
• 142x12 rear end

2 Star SS build: Minimalist meets performance. Technology with the purity of single speed. 

Build highlights: 

• Niner Carbon RDO fork
• Stans Notubes 3.30 SS/Rapid, 15mm front, 142x12 rear
• Elixir 5 brakes
• Niner Carbon seatpost

Click here for Niner''s geometry charts, complete build specifications, and more tech infoWARNING: Cycling involves risks. To ensure your safety, have your bike and its accessories assembled and serviced by a professional mechanic. Do not alter your bicycle or its components. Always adhere to the instructions and warnings provided, including those found on the manufacturer’s website. Inspect your bicycle thoroughly before each ride and always wear a helmet.