Grade 29"

Gravity 29-Rear Org-Blue DH150-3-Edit.jpg
Etched Grade 29 (Grade 285) (NEW-OLD GRADE).png
Gravity 29-Rear Org-Blue DH150-3-Edit.jpg
Etched Grade 29 (Grade 285) (NEW-OLD GRADE).png

Grade 29"

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NOTE TO CUSTOMERS: Industry Nine initially released this model under the GRAVITY name. We have since renamed this model the GRADE. We currently still stock the previous labeled GRAVITY in the 29" size. Thus you will receive a rim labeled GRAVITY until we exhaust this stock. Rest assured it is the same great product, same great rim, same unfailing performance. Ride on.

  • Weight:  Set 2,000g, Front 940g, Rear 1060g
  • Front Axle: QR, 9x100mm, 15x100mm, 20x110, 15x110mm Boost, 20x110mm Boost
  • Driver: Shimano HG mtn 9-11spd or SRAM XD1
    120 point, 3 degree engagement, 6 pawl mechanism
  • Tire Width: 2.4-2.6"
  • Rim: 28.5mm inner width // 33mm outer width
    Tubeless Ready
  • Rear Axle: QR 135mm, 10x135mm, 12x135mm, 12x142mm, QRx141mm Boost, 12x148mm Boost, DH 12x150mm, and 12x157mm Super Boost
  • Rider Weight: It'll take it... 300lbs/ 136kg max


Throw in DH-specific spokes, and lace it to one of the lightest, strongest, and widest DH rims out there and you've got the ultimate DH wheelset. Here's why: Our instantly engaging freehub allows you to ratchet through technical terrain and place your pedals exactly where you need them, leaving you with added speed and your feet set up for the next obstacle. 


The stiffer spokes provide unrivaled cornering and tracking performance through the nastiest terrain -No more wheel flex throwing you off line. The added stiffness also makes tuning easier; eliminating the mushy, vague feeling most DH wheels deliver allows you to accurately judge everything from tire pressure to suspension settings.


The Grade rims are wide, light, and strong, allowing you to attack the nastiest terrain with confidence. The added traction and support our 28.5mm internal width provides is an incredible upgrade from the industry standard 21mm. We managed to add this width without adding the weight associated with wider rims.  Oh, and tubeless ready too. 
These wheels aren't race day only wheels -they have the long-haul in mind. We thickened up the spokes for added abrasion resistance and fatigue life, as well as adding secondary seals to the endcaps, dramatically adding to bearing life.
Proven through numerous seasons under incredible athletes, the Grade wheels will continually deliver the goods, either while taking shuttle runs with your buddies or shaving seconds off of World Cup courses.


Like all of our System Wheels, you can customize your hubs and spoke colors in any combination for an additional fee. We offer 11 custom anodized colors: Orange, Purple, Turquoise, Lime, Gold, Green, Blue, Red, Pink, Silver and Black. Visit our AnoLab Custom Wheel Designer to customize your i9s.

i9 is proud to partner with to offer custom decals for all i9 rim models. Click here to order a set for your new wheelset, or give a fresh look to your current i9 rims.