Transition Sentinel Enduro/Trail Mountain Bike

Yes, this frame comes with ISCG05 tabs. If using a chain guide the rubber cable guide plug is not needed.

We do not accept pre-orders for direct purchase, but you can sign up to be notified when an item comes back in stock. If you are a customer who is looking to order a bike through your local Transition dealer or through the Transition Factory Outpost Store you will want to reach out to them directly.

Yes. This bike is designed to work with both air and coil shocks. We know there are a lot of great shock options outside of what we spec, but we have worked extremely hard to develop the tune in our supplied shocks. We believe they perform as good as anything else available in the aftermarket options.

Transition Bikes is not responsible for any damage to a frame caused by a shock that we do not spec. To verify shock fitment please email us at info@transitionbikes.com.

Yes. Running 10mm more or less travel than stock is okay. Any more than 10mm in either direction can negatively affect the handling.

Yes, but this bike is built with SBG technology, which utilizes an offset in the range of 42-44mm. Running a fork with more or less offset would be taking away from the SBG technology package.

We offer three ways to demo a bike. If you find yourself in Bellingham, you can follow this link to schedule a demo through the Outpost. If you live somewhere else, you can follow this link to see what shops currently have demo bikes available. And finally, you can view our events page, located here to see which upcoming demo events we'll be participating in.

We provide easy and affordable financing through our partner, Bread, so you can pay for your purchase over time. This option is only available in the USA at this time.

Sizes MD-XXL will fit a standard sized water bottle. Size SM will fit a 15oz/450ml Fidlock water bottle

If you have not received an email confirming your tracking number, you can find it by going to your "Order History" once logged in. There you'll see the invoice number, date shipped, shipping carrier, and tracking info, if available. You'll be able to click on the tracking info and be re-directed to the shipping carrier's website.

If you order directly from us you can watch this video to see how the bike will arrive to you. There is very little assembly required. If you order it through one of our local dealers, then the bike will come assembled and ready to ride.

This bike uses the Enduro MAX Bearing Kit For Trunnion Mount Frames (2018-2023) - Part Number 01.18.91.6840

We do not have a spring rate chart or recommendation for this model. Please reach out to the shock manufacturer or use the spring rate calculator at TF Tuned which may be found here tftuned.com.

We list a guideline tire size for each frame, but the real answer is: it depends. Tire brand, tread pattern, rim width, conditions, and how aggressively you ride all play a role. Wider rims can make tires measure larger, and there’s variability between sizes and manufacturers (not all 29” x 2.4” tires are created equal).

If you ride in mud, you'll need extra clearance to avoid packing up. If you push the bike hard, you could flex the rear wheel enough to cause tire rub on the rear triangle—even if you think you’ve got plenty of clearance.

So, what's the takeaway? Please use common sense. If your wheel is properly dished, trued, and tensioned and your tire is rubbing hard enough to damage the frame, you’re probably running too big of a tire.

This frameset is covered for life against manufacturing defects for the original owner and comes with a lifetime crash replacement policy. You can read more about our warranty and crash replacement policy on our Support Page.

Looking for a little giddy-up in your life, but not sure what size you need? Take a look at our human specific sizing guide located here.

Visit our Support Page to see the torque specs and more information about the Sentinel.

Installing frame protection will not affect your warranty, but we do caution against installing it on neon or brightly-colored models as these paints are more susceptible to discoloration and fading. Paint fade is not covered under our factory warranty.