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Niner
Jet 9 Carbon 4-Star X01 Complete Mountain Bike - 2015

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Mixed media.

The biggest change Niner made to the Jet 9 Carbon 4-Star X01 Complete Mountain Bike's frame is that the lightweight, stiff alloy used only in the previous iteration's rear suspension links is now used throughout the back end. This mixed-media design uses a carbon front triangle to put the race-proven geometry of the Jet 9 in the hands of more cyclists while keeping the focus on stiffness, an attribute further boosted with the new addition of a 12x142mm thru axle. The cumulatively stiffer ride maintains carbon's efficiency, tracks more precisely over terrain, and protects the oversized cartridge bearings of the suspension — after all, the pivot points aren't designed to handle torsional and lateral flex, and a stiffer overall system keeps things moving as they should.


Other than that back end boost, much of the Jet 9 Carbon resembles the previous model. It shares a carbon monocoque main triangle and many of the RDO's features, including the PF30 PressFit bottom bracket, cleanly routed internal cables, and relatively stubby chainstays. Most importantly though, they share the same eager 29er geometry.


While the industry-wide love of 29ers has sent some manufacturers into R&D purgatory in order to find a solution to full suspension/29er compatibility issues, Niner has been sitting pretty for some time with its 100 millimeters of CVA travel. The CVA suspension's lower link sits below the bottom bracket, which puts bike's virtual instant center ahead of the drivetrain and effectively isolates the drivetrain from the rear triangle. When you press on the pedals, nothing's lost to compressing the suspension, and you won't suffer kickback from chainstay growth when taking advantage of the 29er's ability to push on through rock gardens.


Adding to CVA's trail appeal is a low ratio of shock stroke to suspension movement. This decreases the amount of preload needed, which translates to smooth, effective damping and less drag on the shock seals. For 2015, Niner trusts its CVA design to RockShox with the Monarch RT3 rear shock, whose three distinct damping settings (open, pedal, and lock) let you adjust the bike's platform as required by trail conditions. It's matched with RockShox's Pike RCT3, which set the market on its head when it was released and continues to set us on all-day, all-mountain paths. SRAM's one-by X01 drivetrain ensures that you've got the high-speed, low-fuss answer for anything you'll encounter along the way.


Frame Material
[front triangle] carbon fiber, [rear triangle] alloy
Suspension
CVA full suspension
Rear Shock
RockShox Monarch RT
Rear Travel
100 mm
Fork
RockShox PIKE RCT3 Solo Air
Front Travel
120 mm
Headset
1.125 - 1.5 in tapered
Shifters
SRAM XO1 (11-speed)
Rear Derailleur
SRAM XO1 (11-speed)
Crankset
32 T SRAM X1
Bottom Bracket
SRAM PF30
Cassette
10 - 42 t SRAM XG 1195 (11-speed)
Chain
SRAM PC 1170
Brakeset
Shimano XT M785
Brake Type
disc
Rotors
180 / 160 mm
Handlebar
NINER Flat Top Carbon
Handlebar Width
710 mm
Grips
NINER Grrrips
Saddle
Niner Custom with Cr-Mo Rails
Seatpost
NINER Carbon
Seat Collar
34.9 mm
Wheelset
Niner Alloy
Front Axle
15mm thru-axle
Rear Axle
142x12mm thru-axle
Tires
Schwalbe Racing Ralph Performance
Tire Size
29 x 2.25 in
Recommended Use
all-mountain
Manufacturer Warranty
5 years on frame

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