2 Pack Bicycle Axle Extenders 3/8-26 TPI Stainless Steel Extension Bolts With Self Locking Washers For Kids Bike Training Wheels Rear Axle Adapters Compatible With 3/8-26 Threads

2-Pack 3/8-26 TPI Bicycle Axle Extenders for Training Wheels
✔️ 2x 3/8-26 TPI stainless steel extenders with self-locking washers

These bicycle axle extenders are designed to add usable length to short rear axles, enabling secure mounting of training wheel brackets without replacing the axle. They’re typically used on kids' bikes, BMX-style bikes, and coaster-brake setups that use a 3/8-26 TPI solid rear axle.

✅ Exact 3/8"-26 TPI thread (≈9.53 mm diameter, 0.98 mm pitch; 0.375 in diameter, 0.0385 in pitch) to match compatible rear axles
✅ 2-pack stainless steel axle extenders for added axle length to fit training wheel brackets
✅ Includes 2 paired 304 stainless self-locking washers with interlocking design
✅ Durable 304 stainless steel construction for outdoor use
✅ Not compatible with 3/8"-24 TPI or M10 x 1.0 axles; intended for 3/8"-26 TPI rear axles on 12-20" bikes

💡 What is a 3/8-26 TPI bicycle axle extender used for on kids' bikes with training wheels?
It helps extend a short rear axle to securely mount training wheel brackets without axle replacement.
- compatible with 3/8-26 TPI solid rear axles on 12-20 inch bikes
- adds usable length to rear axles to fit training wheel brackets
- requires exact thread pitch and self-locking washers for secure fit
- handy for maintaining axles without swapping out the whole rear axle