Niner's race-bred One 9 is now available in an eye-searing blaze yellow colorscheme - Courtesy
The One 9 is a singlespeed 29er with a full carbon frame - Courtesy
The One 9 RDO uses an eccentric bottom bracket to tension the chain - Courtesy
The One 9 RDO can also be set up with a 1x drivetrain, such as SRAM's XX1 (shown) or X01 groups - Courtesy
The One 9 looks to be a potent weapon for XC racing, with or withour gears - Courtesy
Niner's RDO carbon fork is also available in blaze yellow - Courtesy
Niner's SIR 9 steel hardtail is even brighter than the One 9 RDO - Courtesy
Like the One 9 RDO, the SIR 9 uses Niner's BioCentric II eccentric bottom bracket - Courtesy
The BioCentric II eccentric bottom bracket can be swapped our for Niner's CYA bottom bracket reducers, allowing the frames to accomodate PressFit 30, BB30, PressFit 92 or a standard threaded bottom bracket (shown here) - Courtesy
Both models use 142x12 rear Maxle through-axles - Courtesy
The SIR 9 can be built up with a 1x (shown) or with a fully-geared (3x) drivetrain - Courtesy
Shield your eyes! Niner is rolling out its race-bred One 9 RDO carbon singlespeed and its soulful steel SIR 9 hardtail in eye-searing blaze yellow colorschemes.
Click through the gallery at right for detailed images of these bright bikes.
These two hard-to-miss models share the same frame features as their more subdued counterparts.
The one 9 rdo uses an eccentric bottom bracket to tension the chain: the one 9 rdo uses an eccentric bottom bracket to tension the chain - Courtesy
The One 9 RDO is a stripped-down hardtail with a full carbon frame designed for use as a singlespeed or with a 1x drivetrain. BikeRadar will have a One 9 RDO under test shortly.
The sir 9 can be built up with a 1x (shown) or with a fully-geared drivetrain: - Courtesy
The SIR 9 is constructed from a blend of Reynolds tubing and can be built up as a singlespeed or with a fully-geared drivetrain. We got an up-close look at the SIR 9 last summer.
Both the One 9 RDO and SIR 9 can accommodate forks with tapered steerers, have 142x12 rear Maxle through-axles, post-mount disc brake mounts located on the chainstay, and use Niner’s BioCentric II eccentric bottom bracket.
The biocentric ii eccentric bottom bracket can be swapped our for niner's cya bottom bracket reducers, allowing the frames to accomodate pressfit 30, bb30, pressfit 92 or a standard threaded bottom bracket (shown here): - Courtesy
Niner's CYA bottom bracket reducers allow these frames to accommodate almost any bottom bracket standard
Their bottom bracket shells are also compatible with Niner’s modular CYA bottom bracket, which uses press-fit reducers to allow the user to run almost any bottom bracket system on the market, including PressFit 30, BB30, PressFit 92 and a standard threaded bottom bracket.
Josh Patterson is a BikeRadar contributor and former technical editor. He has spent most of his career working in the cycling industry as an athlete, mechanic and journalist. He holds a master's degree in journalism and has more than 20 years of experience as a cyclist and 12 years of experience riding and writing for BikeRadar, Cyclingnews, Cycling Weekly, Dirt Rag, RoadBikeReview and Outside Magazine. A native of the Flint Hills of Kansas, Josh was a pioneer in the gravel cycling movement, having raced the first Unbound 200 and many other gravel events around the globe. He considers himself a cycling generalist and enjoys road, gravel and mountain biking in equal measure. When not traveling for work, he can be found exploring the singletrack and lonely gravel roads that surround his home in Fort Collins, Colorado. In addition to his love of cycling, Josh is an enthusiastic supporter of brunch, voting rights and the right to repair movement.
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