This 12-1/2" x 2-1/4" inner tube with a straight valve stem for Razor MX125 and SX125 dirt bikes is an affordable solution to punctured or dry rotted inner tubes. The straight valve stem allows easy air filling. At our low everyday price, you might want to order more than one.

Looking for a more puncture-proof alternative to this standard inner tube? Try our Heavy-Duty Thorn-Resistant 12-1/2"x2-1/4" Inner Tube with Straight Valve Stem.

Inner tubes for scooters come in a number of sizes and the 12-1/2"x2-1/4" is one of the more popular. This size is also sometimes referred to as 12-1/2x1.75x2-1/4.

Instructions for Tire and Tube Removal:
1. Deflate inner tube completely.
2. Unhook one side of tire bead.*
3. Remove inner tube starting opposite of valve.
4. Check around edge of rim and inside of tire for any sharp objects.

Instructions for Tire and Tube Mounting:
1. Slightly inflate tube.
2. Insert inner tube into tire.
3. Position tire and tube to permit insertion of valve stem in valve hole of rim.
4. Mount one side of tire on rim by hooking tire bead into rim well.*
5. Mount other side of tire by gradually moving around rim.
6. After insuring that tire bead is properly mounted on both sides of rim, inflate inner tube to the recommended pressure.

NOTE: Over or under inflating tube will result in poor handling of bicycle and damage to tire and inner tube.

*Use only Scooter Tire Levers for mounting and dismounting of tire.

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