Fox Racing Mainframe MIPS Helmet - Thunder Mountain Bikes
Fox Racing Mainframe MIPS Helmet - Thunder Mountain Bikes
Fox Racing Mainframe MIPS Helmet - Thunder Mountain Bikes

Mainframe MIPS Helmet

SKU: 28422-098-S

Regular price$89.95
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

The Mainframe MIPS™ Helmet from Fox racing provides just what anyone looking for an affordable helmet hoping to find - proven safety and easy trail style! Featuring extended coverage with the pro-proven MIPS™ impact protection. The advanced MIPS tech is engineered to protect from injuries by absorbing direct hits and redirecting energies and forces.

The Mainframe MIPS Helmet will also keep you cool with its lightweight frame and well-placed ventilation. Plus, when the trail dirt and sweat do build-up, you can easily whip the moisture-wicking liner out and run it through the wash. 

Save your noggin' (and your wallet), with Fox's MIPS Mainframe! Featuring pro-level protection at an easy-to-ride price, it's the perfect helmet for everyone from newbie riders to the more advanced.  


  • Proven MIPS™ impact protection system reduces rotational forces in a crash
  • Extended coverage for added safety
  • Optimized venting with channeled, in-molded EPS provides efficient cooling
  • Removable, washable moisture-wicking liner
  • MIPS™ integrated fit system reduces weight and provides a more comfortable, seamless fit
  • Weight: 390 g, medium
  • EPS, PC, PA, polyester


Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!


We currently offer both economy and expedited shipping options though FedEX and USPS. 

Orders totaling over $49 are eligible to ship for free via an economy ground option of our choice. 

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 and depending on your location. 


Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

All returns must be requested within sixty (60) days of the fulfillment date (i.e. the date we printed the shipping label and boxed up your order.) All returned items must be received in new and unused 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. 

Return Process

To request a return, please visit: and follow the steps to return eligible items from your order. 


After receiving your return and inspecting the condition of your item, we will process your return. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. We will notify you by email when your return has been processed.

For all Special Order items, there is a 25% restocking fee. Special Order items are those that we do not currently stock.


For defective, damaged, or if we sent you the wrong products, please contact us using the phone number or email below.

Other questions?

If you have any questions concerning our return policy, please contact us at:

(928) 282-1106   |

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