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Do you know the difference between BOOST and SUPER BOOST? We tell you that and much more in this video where we review the types of closures for bicycle wheels, and as a bonus a quick tutorial with assembly tips. SOLID AXLE WITH NUTS for city bikes, children's bikes, and MTB starter range we have 128 mm, 130 mm, 140 mm, and 145 mm axles, in diameters of 8 mm, 9 mm and 9.5 mm for the front. And 165 mm, 170 mm, 178 mm, 180 mm, for the rear, varying depending on the number of sprockets, normally 6, 7, 8 and 9 speeds. This first group will not be covered in the video, as they are not integrated closures, but a screw with a nut that requires a tool for installation. In the following groups the closure is an integrated system, which is operated without the need for tools. QUICK RELEASE for 9mm and 10mm axles. It consists of a 5mm diameter x 100mm wide and 135mm long rod for MTB / 130mm long for ROAD. A couple of turns to unscrew the rod, and pull the lever to open the closure. Tip: with disc brakes, always have the front closure on the right side to avoid accidents. And we come to the system that in the not too distant future, as with any innovation, will be present in all ranges of bicycles. THRU AXLES We are going to differentiate between specific axles for Road and specific for Mountain Bike. For ROAD bikes, with 12mm diameter to save weight, front length 100mm and rear length 142mm. Those intended for MTB bikes with 15mm diameter and 100/110mm width at the front, the same axle with 20mm diameter at the front is common on gravity discipline bikes. And things get complicated at the rear: 12mm diameter and widths of 142mm, 151mm, 156mm. The BOOST system consists of axles with a width of 148mm, and we call SUPER BOOST the larger sizes, intended for bikes that need greater robustness: enduro, DH, eBikes. Tip: never force a closure, if it doesn't thread smoothly you're doing something wrong. PLAY VIDEO! BUY CLOSURES FOR BICYCLE WHEELS https://labicicleta.net/searchanise/r... Did you like the video? Do you want us to talk about a topic or product? Leave your comment, and we'll answer you. You can follow us on: ► YOUTUBE: / labicicletaex ► Blog: https://labicicleta.net/escuela/ ► INSTAGRAM: / labicicleta ► TWITTER: / labicicletanet ► FACEBOOK: / labicicleta