Despite the costs in research and development, Niner's engineers went back to the drawing board and completely rebuilt the Jet 9 from the ground up for 2017. Similar in name but drastically different in geometry, the Niner Jet 9 RDO SLX Complete Bike goes much further than merely adding travel. It's longer across the top, steeper out back, slacker up front, and better at just about everything that made the original Jet 9 such a standout on the trail. Whether you're grinding up climbs with roots and rocks, bombing descents at mach chicken, or reveling in fast, flowy singletrack, the Jet 9 RDO lives up to its versatile reputation. This in-house SLX build gets kitted up with a Shimano SLX 1 x 11 drivetrain for a wide range of usable gears, ultra-reliable Shimano SLX disc brakes, Mercury's stout Enduro alloy wheelset for running wider tires (the Jet 9 now clears 29 x 2. 6-inch tires), and a Fox 34 Float fork with 120 millimeters of trail-taming travel. As with most bikes in the current trail generation, the key element underwriting the new Jet 9's versatile geometry is its Boost rear axle. Bumping the spacing up to 148mm lets Niner chop 21mm off of chainstays by slamming the rear wheel up into the seat tube. The seat tube contributes to that versatility, too. Despite the fact that the 2017 Jet 9 comes with 130mm of front travel, it's got the same seat tube angle as the 2016 Jet 9 with a 100mm fork. Adding 30mm up front would typically force you out of the bike's center; however, the new Jet 9's geometry keeps you on top of the pedals while the included dropper post allows you to clear out some cockpit space so you can throw the bike around on descents. The bike's updates shine at the front end, too. In 2016, the Jet 9 was limited to a 71 or 70. 5-degree head tube, depending on whether you were running a 100 or 110mm fork. For 2017 (as configured here in 29er form), it drops to 67. 5 degrees. This makes it a thoroughly modern trail bike that's stable on descents, ye...
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