Niner One 9 RDO and SIR 9 now available in blaze yellow

Loud and proud colors for Niner’s steel and carbon singlespeeds

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

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:

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 142×12 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):
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.


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