Slime Self-Sealing Tube - 700 x 28

Slime Self-Sealing Tube - 700 x 28

$ 8.99   Sold Out

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Self-Sealing Tubes Inner tubes pre-filled with Slime Tube Sealant 700 x 28 - 35mm • Instantly seals up to 1/8" (3mm) punctures • Provides flat tire protection for up to 2 years • Pre-filled with environmentally-friendly Slime Tube Sealant



We do our best to get every order shipped as soon as possible, typically orders will ship within 1 business day from the time that the order is placed.  All bikes ship via FedEx and come 85% assembled in a box.

Transit times and shipping cost vary by location.  Standard FedEx Ground or International Economy rates apply, you will be able to see the shipping cost before finalizing any order.  For estimated transit times, please see the map below.






All Firmstrong bicycles are sold through authorized dealers only.  Any retail purchaser of our bicycles through one of our authorized dealers will be protected by a limited warranty stated as such:

1)      Frames, including forks, are warranted to be free of manufacturing defects in materials and workmanship for the life of the product.
2)      Components and parts are warranted to be free of manufacturing defects in materials and workmanship for six months from original date of purchase.

If you have a claim that falls under our warranty policy, please contact the Firmstrong authorized dealer in which you purchased the bicycle and they will facilitate the warranty claim for you.  Any parts that have been deemed defective during the warranty period will either be repaired or replaced by parts of equal or greater value.  As such, it is purely at the discretion of the manufacturer and it is the sole remedy of the warranty.  


1)      Damage, failure or loss resulting from normal wear and tear.
2)      Damaged, failure or loss resulting from an accident.
3)      Damage, failure or loss caused by abuse, misuse or neglect.
4)      Damage, failure or loss caused by improper assembly, improper repair or improper maintenance of bicycles and components.
5)      Damage, failure or loss caused by any alterations or modifications.  Warranty will be fully voided by any alterations or modifications to the frame, forks or components.
6)      Gear or brake adjustments.
7)      Tires and tubes.
8)      Shipment charges for replacement parts.

Warranty covers only the first owner/purchaser, it is non-transferable and applies only to Firmstrong bicycles purchased through an authorized dealer.  

We love our bicycles and we are confident that they are great quality products.  We also care very much about our customers, so please exercise caution at all times when riding a Firmstrong bicycle.  It is the owner’s responsibility to inspect the bicycle before each and every ride and it is the owner’s responsibility to follow all standard bicycle safety precautions.  Please check your local laws regarding bicycle safety.  Always wear an ANSI approved safety helmet and always utilize proper lighting equipment when riding at night.  Reflectors alone are not enough.  Failure to use approved safety equipment could result in injury or death.

If you have questions about our warranty, please contact us.      


If any product is subject to federal or state consumer warranty laws, our statement of limited warranty included with the product applies in place of these warranties.  Our warranty replaces any other warranty, expressed or implied, including the implied warranties of merchantability and fitness for a particular purpose.  Under no circumstances are we liable for third-party claims against you for losses or damages; including losses of or damages to records or data; consequential damage (including lost profits or savings) or incidental damages.  Purchaser agrees that the total of any and all liability, regardless of fault, shall be limited to the total of your bicycle purchase with Seller.  This limitation on warranty and liability is part of the terms of sale, constitutes a binding agreement and may be enforced against you.  The laws of the State of California shall govern this agreement.  The parties hereby agree that any dispute relating to the products sold hereunder shall be subject to the jurisdiction and venue of the courts of Los Angeles, California. 



Our 'Warranty Your Bike Forever' is available for an additional $9.99 when adding your bike to your shopping cart. Should any part of the bike ever break, will send a replacement part at our cost. will cover all shipping costs associated with sending replacement parts. If a replacement part will not fix the problem will replace the bike and pay for all shipping costs associated with returning the broken bike and sending the new bike.

You'll be back to enjoying your bike in no time at all.

  • This plan does NOT cover:

  • The rims, spokes, tires and tubes

  • Cosmetic damage

  • How the warranty works

  • You will receive an email confirming your purchase.

  • Your plan is active the moment you complete your purchase, so you never have to register or mail anything in.

  • If you ever need to make a claim, email it to with your order number, and our team will process it asap.

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