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Compatibility: Compatible with most standard straight-tube forks and tapered-tube forks (Up tube: 1/8inch=28.6mm, Down tube 30mm).The bike headset includes two Down stops that can support standard straight and tapered forks.
2. Material: The helmet is made of 7075 aluminum alloy, light in weight, durable and durable, not easy to deform, and can be used for a long time
3. Double bearing structure: the bicycle helmet adopts upper and lower double bearings, which are smooth and unimpeded, preventing excessive wear of the bearings, enabling them to rotate freely, saving effort and giving full protection to your bike
4. Laser laser technology: exquisite laser technology, beautiful appearance without fading
5.Product specification: black/red/gold/blue. Equipped with star nuts and bolts. Suitable for mountain bikes/road vehicles, etc
1.Compatibility: 34*34mm 44*44mm Compatible with most standard straight tube forks (top tube: 1/8 inch = 28.6 mm, bottom tube 30 mm) 44*55mm 44*56mm Fits most steel frame bikes' Compatible with most standard straight tube forks and tapered tube forks (top tube: 1/8inch=28.6mm, bottom tube 30mm). The bike helmet includes two lower stops to support standard straight and tapered forks 2. Specification Material: Aluminum alloy Color options: Gold; Black; Red; Blue Weight: 34*34mm: 116g 44*44mm : 102.2g 44*55mm :125g 44*56mm : 131.9g