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Niner JET 9 RDO Mountain Bike Frame - 2018

Niner JET 9 RDO Mountain Bike Frame - 2018
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$3,000.00

Item # NNR0081

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  • Carbon/Red, XS ($3,000.00)
  • Carbon/Red, S ($3,000.00)
  • Carbon/Red, M ($3,000.00)
  • Carbon/Red, L ($3,000.00)
  • Carbon/Red, XL ($3,000.00)
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Description

No Jet Lag.

The latest Niner Jet RDO Mountain Bike Frame reboot took what we knew of the XC race rocket Jet, and gave it a facelift adding some features making it a better all-around trail bike. Niner added 20mm of additional travel to the Continuously Varying Arc (CVA) rear end bringing the total to 120mm and added the ability to swap back and forth between both 29er and 27.5+ wheels. The headtube is now slacker, the seattube is steeper, reach has gotten longer, and all-in-all made the Jet an awesome mid-travel machine while the RKT steps in as the XC racehorse. We love the change and after just one ride, think you will too.

The move to boost spacing allows Niner to update the geometry and by doing so, they hacked 21mm off of the chainstays moving the rear wheel underneath the rider. This contributes to quick climbing and handling, not lost from the original Jet, despite the longer travel. The steep seat tube angle also contributes here. Niner recommends paring a 130mm for 29-inich wheels and 140mm with 27.5+ and despite the slacker front end, the seat tube angle remains similar to the older, steeper Jet 9 with its shorter travel fork. The steeper seattube keeps you on top of the pedals for more efficient pedaling, more intuitive handling, and prevents you from feeling like you threw a leg over a chopper.

With the recommended fork length for 29 and 27.5+ wheels the respective headtube angles sit at either 67.5 or 67 degrees. In practice, that angle strikes a happy medium between a quick and agile trail machine and one that continues to add confidence as both speed and gradient increase. The move to a longer reach paired with a shorter stem lengthens the wheelbase so you won't think twice hucking the bike into a nasty rock garden, yet steers quick enough getting you through uphill and downhill switchbacks with ease.

One thing that does remain the same on Niner's Race Day Optimized (RDO) frames are the materials and construction processes. Niner's compaction method squeezes out all of the excess resin and compacts the carbon ensuring uniform wall thickness. This gives Niner exact control of the material and lets the engineers reduce weight, add stiffness and durability, and overall tune the bike to how they want it to ride.

The CVA suspension is a patented platform that Niner specifically designed to work with 29-inch wheels. Since 27.5+ wheels are pretty damn close to the same diameter, it works very well here too. CVA relies on counteracting linkage forces that are not dependent on specific pivot locations. The bottom linkage is pulled downward when you're pedaling to negate squat, while the upward rotating top linkage is left free to react to terrain changes. What you get is an efficient, fun, and fully active suspension, all the time.

Finishing details checks off everything on the list of what we want in a modern mountain bike and we whole-heartedly approve of the inclusion of a BSA threaded bottom bracket. Pressfit shells might be lighter and easier to manufacture, but the tighter tolerances of a CNC-machined thread cannot be matched by any pressfit interface. The threading ensures the bearing cups install correctly and parallel with one another which reduces wear over time and virtually eliminating creaks, groans, and pops that so often plague pressfit models. Areas near the crank/bb area on the mainframe and chainstays are protected with titanium plates. The frame also features a battery storage compartment if you get the itch for Di2 shifting. Boost axle spacing accommodates 29er tires up to 2.5-inches and 27.5+ tires up to 3in.

  • Niner's Jet gets trail bike friendly
  • 120mm of CVA suspension designed for big wheels lines
  • Revised geometry climbs faster and descends harder
  • RDO carbon construction minimizes weight to gain speed
  • Compatible with electronic drivetrain routing and battery storage
  • 29in. and 27.5+ wheel ready

Tech Specs

Frame Material:
RDO carbon fiber
Suspension:
CVA
Wheel Size:
29in, 27.5+
Rear Shock:
FOX Float DPS Factory EVOL 3 Position
Rear Travel:
120mm
Head Tube Diameter:
1.125 X 1.5in.
Bottom Bracket Type:
english
ISCG Tabs:
ISCG-05
Cable Routing:
internal
Front Derailleur Mount:
low direct mount
Brake Type:
post mount
Seatpost Diameter:
30.9mm
Seat Collar:
34.9mm
Rear Axle:
12 x 148mm thru-axle
Recommended Use:
trail
Manufacturer Warranty:
5 years

Geometry Chart

Niner

Geometry Chart

 

Jet 9 RDO
130mm Travel Fork
 

Seat Tube

(c-t)

Effective Top Tube

(eTT)

Stack

(S)

Reach

(R)

Stand Over

Head Tube

(HT)

Head Tube Angle

(HTo)

Seat Tube Angle

(STo)

Bottom Bracket Drop

(BBD)

Chainstay

(CS)

Wheelbase
XS 14in 22in 23.3in 15.5in 26.4in 3.7in 67.5o 74.5o 1.2in 17.1in 43.9in
S 15in 22.7in 23.7in 16.1in 27in 4.1in 67.5o 74.5o 1.2in 17.1in 44.7in
M 17in 23.5in 24.2in 16.8in 28.7in 4.7in 67.5o 74.5o 1.2in 17.1in 45.5in
L 19in 24.4in 24.6in 17.5in 29.8in 5.1in 67.5o 74.5o 1.2in 17.1in 46.4in
XL 21in 25.3in 25.1in 18.3in 31.1in 5.7in 67.5o 74.5o 1.2in 17.1in 47.4in
140mm Travel Fork
 

Seat Tube

(c-t)

Effective Top Tube

(eTT)

Stack

(S)

Reach

(R)

Stand Over

Head Tube

(HT)

Head Tube Angle

(HTo)

Seat Tube Angle

(STo)

Bottom Bracket Drop

(BBD)

Chainstay

(CS)

Wheelbase
XS 14in 22.1in 23.4in 15.3in 26.5in 3.7in 67o 74o 1.1in 17.1in 44.1in
S 15in 22.8in 23.8in 15.9in 27.2in 4.1in 67o 74o 1.1in 17.1in 44.8in
M 17in 23.6in 24.4in 16.6in 28.8in 4.7in 67o 74o 1.1in 17.1in 45.7in
L 19in 24.5in 24.7in 17.4in 30in 5.1in 67o 74o 1.1in 17.1in 46.6in
XL 21in 25.4in 25.3in 18.1in 31.3in 5.7in 67o 74o 1.1in 17.1in 47.5in

Reviews & Community

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  • Familiarity: I've put it through the wringer

I demoed the 2017/2018 Jet 9 in Park City and the following week I bought one. I feel this bike is the best Trail/Cross-Country bikes on the market with the 130mm setup. I will be riding this bike until something else comes out that can beat it, absolutely love it. This is nothing like the old Jet, so those that have one, this is a new animal. The chainstays were shortened, the headtube went from 70 degrees to 67.5, and the BB is now threaded. In addition, it's boosted and you can run 3.0 27+ tires and 2.4 29er tires. Climbs great and still super playful on the descents.
The Niner's CVA (Constantly Varying Arc) suspension design is what sold me on this bike. It felt great climbing and super playful on the descents with great mid stroke support.
Please reach out to me if you have any questions on this or are interested in a custom build.

Saddle height is 71.5cm - Medium fits perfect. Weight is 25.6lbs, XT, Reynolds Blacklabel

Bill Sherman
Customer Account Manager-Bike
Office: 801-204-4545
bsherman@backcountry.com

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