• NAC Rim Shield foam liner for tubeless MTB tyres
  • Foam tyre insert for mountain bikes - NAC
  • MTB tyre foam insert for tubeless tyres - NAC
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Rim Shield Tubeless Tire Insert foam Liner for MTBs

Rim Shield Tubeless Tire Insert foam Liner for MTBs

Rs. 1,799.00
Rs. 1,799.00
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The NAC Rim Shield is a closed-cell foam tyre insert that lets you run lower tyre pressures for superior grip and traction — without the risk of pinch flats or rim-destroying impacts. For aggressive MTB riders tackling rocky Indian trails, it's the upgrade that transforms how your tubeless setup handles, climbs, and descends.

Key Features

  • Run lower pressures safely — superior grip and traction on rocks, roots, and loose terrain without pinch flats or catastrophic rim strikes.
  • Sealant-compatible — closed-cell foam does not absorb tubeless sealant, so the sealant stays in the tyre doing its job.
  • Rim protection — cushions direct impacts on sharp rocks and trail craters, protecting expensive alloy and carbon rims from cracking and denting.
  • Better control — reduces air volume for more controlled compression and rebound, improving cornering, climbing traction, braking feel, and descending confidence.
  • Sharper cornering — increases side-to-side tyre stability while keeping the tread soft and supple for grip.
  • Run-flat capable — if a major tear can't be sealed, the Rim Shield supports the tyre so you can ride out safely to the trailhead.

Compatibility & Sizing

Designed for tubeless and tubeless-ready MTB setups from 2" wide to 3" wide. If you're unsure of the right fit, message us with your wheel size (27.5" or 29") and tyre width, and we'll help you choose.

How It Works

The foam insert sits inside the tyre against the rim. It fills part of the air volume, which lets you drop pressure for grip while the foam absorbs the hard hits that would otherwise dent your rim or cause a pinch flat. The result: more grip, more control, and more protection — all at once.

Ride harder with more confidence. Free shipping on orders above ₹899.

Run it alongside the Instant Seal Tyre Sealant for complete puncture protection on rough trails.

Shipping, Returns and Warranty

Shipping

Order is usually dispatched in 1-2 days of placing the order, Delivery can take between 3-7 days depending on the delivery location. You can easily track the order by viewing the link that is shared with you after placing the order.

Warranty

Please note that this product is a consumable item and is not eligible for warranty coverage. To learn more you can view our warranty policy.

Returns

We have a 15 day return policy, which means you have 15 days from the date of delivery of your order to request for a return. To be eligible for a return, your item must be in the same condition as you received it. The product must be unused with no damage, tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at support@thenacstore.com or +91 99875 97589. Our Team will then review the images and videos sent by you and once approved, we will arrange for a return, as well as send instructions on how to pack your product and also the date of the pickup. Items sent back to us without first requesting a return will not be accepted. After receiving the product at our warehouse, we will inspect the product. On approval of inspection, we aim to initiate the refund between 3 to 7 business days. 

Damages and issues: Please inspect your order upon reception and contact us immediately at support@thenacstore.com if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue.

Exceptions / non-returnable items: Custom products such as special orders or personalized items are not eligible for a return. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about any of these specific products. 

Refunds: Once we’ve received and inspected your return, we shall notify you and let you know if the product was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please note it may take some time for your bank to process and reflect the refund back into your bank account

Have any queries? Our Team is happy to assist you. Write to us at support@thenacstore.com or WhatsApp us at +91 99875 97589

To learn more you can view our return policy

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Frequently Asked Questions

What does a tubeless tyre insert actually do?
It sits inside the tyre and protects the rim from impact damage on hard hits — preventing rim dents, pinch flats, and tyre burping at low pressures. It also lets you run lower tyre pressures safely for better grip on technical trails.
Will it fit my MTB wheels?
Yes. Rim Shield fits MTB wheels in 27.5-inch and 29-inch sizes, with tyres from 2.2 to 2.6 inches wide. Check the specific size range on the product page for an exact match.
Does it work with regular sealant?
Yes. Rim Shield is fully compatible with all standard tubeless sealants, including our Instant Seal Tyre Sealant. The insert doesn't interfere with sealant action.
What tyre pressure should I run with a tubeless insert?
The insert is what lets you go lower safely. Many riders drop 3–6 PSI below their usual pressure once fitted, gaining grip and comfort. Start with a 2–3 PSI drop and fine-tune on familiar trails.
Do tyre inserts make your wheels feel heavy or slow?
There's a modest weight gain at the rim, but it doubles as protection. Most riders find the trade strongly positive: lower pressure means more traction, and run-flat capability means a tyre tear doesn't end your ride.