Regular price$79.95
- Low stock - 2 items left
- Free shipping on most orders $69+
The Grappler Radial uses the same aggressive tread pattern as the original Grappler: tall, supportive side lugs for predictable cornering, strong center knobs for braking and acceleration traction, and an open knob layout that sheds mud and debris in loose or wet conditions. It's a proven front or rear tread for Enduro, DH, and E-MTB riding.
What sets it apart is the Flux GR Radial casing. Radial ply construction lets the tread and sidewall work more independently, so the tire conforms better to rough terrain. The result is more consistent traction over roots, rocks, and chatter, plus better bump absorption that reduces arm fatigue on long runs.
The Flux GR Radial is a 72 TPI dual-ply construction with Dual Apex inserts on each sidewall. These inserts add lateral stability without limiting the radial compliance that makes the tire feel planted through rough, high-speed sections — so it handles hard hits while still tracking predictably through corners.
Available in two purpose-built compounds:
MoPo is a pure 42a single compound designed for maximum grip. The soft durometer and slow rebound deliver the highest possible traction in corners, under braking, and through loose terrain. It's the go-to choice for front tires and gravity riding where grip matters more than anything.
Momentum is a dual compound that balances grip with rolling efficiency and tread life. The center lugs use a firmer 50a durometer for faster rolling and better durability, while the shoulder lugs use the same 42a MoPo rubber to keep cornering confidence high. A strong rear tire option, and a proven front/rear combo when paired with MoPo up front.
Key Features of the Grappler Radial MTB Tire:
- Front or rear aggressive tread for Enduro, DH, and E-MTB
- Aggressive center knobs for powerful braking and acceleration
- Tall siped side lugs for predictable cornering at all lean angles
- Radial ply construction for improved traction and bump absorption
- 72 TPI dual-ply Flux GR Radial casing with Dual Apex sidewall inserts
- MoPo: pure 42a single compound for maximum grip
- Momentum: 50a center / 42a shoulder dual compound for grip and rolling speed
- Available in 29" x 2.5" and 27.5" x 2.5"
- Tubeless ready
Please reach out to us with any questions you may have about anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
Shipping
We currently offer both economy and expedited shipping options through FedEx and USPS.
Most orders totaling over $69 before tax are eligible to ship for free via an economy ground option of our choice.
Due to larger box sizes, handlebars, wheels, and other oversized items, an additional shipping fee will be applied.
Most bikes ship for only $200 within the continental US. Bike shipping to AK, HI, or PR is usually $350, but may incur additional fees depending on the exact delivery location.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee, depending on your location.
RETURNS
Should there be an issue with the item you bought, or if you no longer need your purchase, we will be happy to set up a return.
Component & Gear Returns
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items that have been installed or show wear of any kind.
Bike Returns
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes incur a $200 restocking fee, and the customer is responsible for the return shipping costs.
Return Shipping
Customers are responsible for return shipping fees and may choose the carrier of their choice to handle their product return. We no longer provide shipping labels directly.
For any return shipping questions, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
REFUNDS
We will process your return after receiving your returned item(s) and inspecting their condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed. All refunds will be returned to the original payment method. No store credit or other refund methods are available.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong item(s), please contact us using the phone number or email below.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive a confirmation by email.
QUESTIONS ABOUT RETURNS?
If you have any questions concerning our return policy, please contact us at:
