Box One Thru Axle Conversion Sleeve 20 mm to 15 mm

Convert with confidence. Ride with precision.

The Box One Thru Axle Conversion Sleeve lets you easily adapt a 20mm thru-axle hub to fit standard 10mm (3/8") dropouts with 5mm axle bolts. Ideal for riders who want to use a pro-level hub on frames with smaller dropouts — without sacrificing alignment, performance, or strength.

Features:

• Converts 20mm thru-axle hub to 10mm dropout compatibility

• Designed for use with 5mm axle bolts

• CNC-machined aluminum for lightweight durability

• Quick and easy installation

• Perfect for race-day setups or frame upgrades

Specs:

• Material: 6061-T6 aluminum

• Inner Diameter: 20mm

• Outer Diameter: 10mm

• For 5mm bolts (not included)

Whether you're optimizing your BMX race bike or adapting your setup for training, the Box One Conversion Sleeve delivers reliable performance every time.