✓Check Your Bike for Compatibility: Only fits 12, 14, 16, 18 and 20 inch single-speed kids’ bikes and riders up to 100 lb. Each rear axle needs at least 0.4 in (10.2 mm) of exposed thread beyond its existing nut. Check frame clearance before ordering. Not for multi-speed bikes, quick-release or short rear axles, or chain guards that block mounting.
✓Worried About a Training Wheel Coming Off?: Our oversized retaining washers cover more of the center bearing area, helping keep the wheel body in place around the bearing. Each wheel has two high-carbon steel 608ZZ bearings to support smooth rolling.
✓Thicker, Heavy-Duty Steel Brackets: Worried about a bracket bending during practice? Our 3.0 mm (about 0.12 in) steel walls are 20% thicker than 2.5 mm walls. A 45° reinforcing plate strengthens the bend, while the reinforced U-channel design helps resist bending and provides side support through early starts, stops and practice laps.
✓Get Both Sides Ready for Practice: Before heading down the driveway or along a smooth park path, take a moment to set up both sides evenly. Five mounting slots let you adjust the height for 12–20 inch bikes.
✓A Little Flash with Every Roll: As your child starts pedaling, the wheels light up in three colors—turning another practice lap into something a little more exciting. The lights activate as the wheels rotate, with no batteries to charge or replace. Each clear-rim wheel measures 110 mm (4.33 in) in diameter and 15 mm (0.59 in) wide.
✓Complete Kit for Your First Ride: Includes 2 light-up training wheels, 2 bracket arms, 2 shoulder bolts, 2 locknuts, 2 positioning plates, 2 large washers, 2 small washers, 1 open-end wrench, 1 socket, 1 bike bell and 1 user manual.
✓About 10 Minutes to Install: Typical installation takes about 10 minutes, depending on your bike and experience. Follow the supplied manual, set both sides evenly and check that both wheels rotate freely. Use with a properly fitted helmet and adult supervision.