Q: What is the max tire size I can put on my bike?
A: Each frame is different. If you are not able to find your bike in our BIKE ARCHIVE or ENCYCLOPEDIA, please send your question, a photo of the bike and approximate year to: firstname.lastname@example.org
Q: Can I upgrade to a new current model frame and swap my parts over?
A: Models years can change quite a bit. Check out the archive and current model specs and compare, wheels (example: 110X15MM FRONT, 142 X 12MM REAR), bottom bracket, fork travel to start.
Q: Can I put 27.5 wheels on my older model 29er bike?
A: Our current mountain bikes are designed to fit up to 29x2.4" tires. (Keep in mind that tire sizes vary by brand and rim combination, so some tire/rim combinations may not fit) Our 29er frames are not designed around 27.5+ compatibility, unless offered on our website, so we cannot confirm fit of these tire and rim combinations. There may be combinations of 27.5+ tires and rims that fit in some of our frames but it is a trial-and-error situation involving many components. In addition, by switching to the smaller diameter wheel/tire combination the bottom bracket height will drop and likely cause unwanted pedal strikes.
Q: What size chainrings are recommended for my bike?
A: Niner offers recommended chainring sizes in the bike archive or current model page.
Q: I want different gearing, what should I get?
A: Niner offers recommended chainring sizes in the bike archive. If you are looking for more options from non-Niner branded components, please visit or call your Niner dealer or local bike shop. Niner receives several inquiries every day from riders and researchers requesting detailed information on everything from bike specs to tech recommendations. We are honored that so many would consider us the source for these individual questions, yet due to staffing constraints and the depth of brands offering components, we are not able to fulfill these requests. While many of these build changes and updates on your bike are undoubtedly worthwhile, we simply do not have the resources to address the majority of these requests and rely on the bike shops to help riders navigate compatibility and the latest offerings.
Q: What is the actual BB height of my bike?
A: We use the BB drop instead of height due to variances in tire sizes. The height measurement is different for each build dependent on tire choice and it's not possible to advertise an accurate number due to different tire preferences and pressures.
*Bottom bracket height can be determined by subtracting the bottom bracket drop from the radius of the wheel and tire combination. So if you can figure out the radius (somewhere around 14.5"+ 1/2" to 1" dependent on tire choice) then just subtract the BB drop from that number.
Q: Which derailleur hanger do I need for my bike?
A: Please visit our parts page HERE and see the bike descriptions on the hangers. Take a look at your bike to see if the rear is a QR (quick release) or Thru Axle (non-hook threaded hanger). This should help narrow the choices down. If it still isn’t clear, shoot us an email with a photo of your bike to: email@example.com
Q: I want to change the Shock on my full suspension frame, what options do I have?
A: We have only tested your frame with the shock supplied and cannot confirm the compatibility of any other options. Please work with your Niner dealer or local bike shop to assist you with compatibility.
Q: If you no longer offer a bike or part in your current line, do you guys have some back in the warehouse?
A: We may have some old stock in our warehouse dependent on how long it’s been since we made the item. Please email firstname.lastname@example.org with your question or a photo of what you are looking for.
Q: Are there any dealers who have stock on that part that you no longer make?
A: Unfortunately we have no way of knowing who still has what in stock. A good option would be to get on our Dealer Locator and start calling around.
Q: What are your frame/bike weights?
A: We don’t have weights on all of our Frames/Bikes, as there are too many variables, but we do have some. Email Info@ninerbikes.com with a specific request.
Q: I’m planning on replacing the fork on my mountain Bike. What offset should I get?
A: Our current mountain bikes are designed around a 51mm offset. That will give you the ride quality that we intended.
Q: I have an old Niner bike and want to get a new Niner frame. What parts will carry over?
A: The best way to get this information is to go into the Bike Archives section or the Niner Tech Encyclopedia and compare the information with the Technical Specification section on the current bike pages.
Q: I have an old Jet/Rip and I want to run the rear thru-axle/Boost. Can I use the rear triangle from a new Jet/Rip?
A: Unfortunately the rear triangles from our frames are not cross compatible. You’ll just have to buy that new Jet/Rip.