Your wheel's rim - the aluminium or carbon fibre hoop that they tyre sits on - is one of your bike's essential components, having a significant effect on factors including your speed and ability to absorb impacts. Don't go round in circles! Use our best bike rims buying guide to get the right ones!To get more news about mtb bike rims, you can visit zpebicycle.com official website.

For road and trail riding, stiff and lightweight rims reduce rotational weight, helping you go faster for less effort. Meanwhile the latest generation of deep-section carbon rims gives competitive road racers an aerodynamic advantage.

However for high-octane biking disciplines such as BMX and downhill (DH) MTB racing, rims must be strong and wide enough to take considerable punishment without folding.When upgrading or replacing an MTB rim or building a wheelset there are a number of factors to take into consideration, including not only the size of rim your bike is designed for, but also characteristics such as weight, width, spoke number and type, etc.

The vast majority of MTB rims are made from aluminium alloy although some high-end racing hoops may utilise carbon fibre - but at a price.The type of rim you choose must be matched to the type of riding you do - a lightweight set of XC racing hoops simply can't withstand the beating dished out by a boulder-strewn descent, while a super-strong pair of DH rims is hard work to pedal for any length of time.

Lighter rims mean less rotational weight, which translates into improved acceleration and easier speed - perfect for fast cross-country riding and racing. However wheels for certain MTB disciplines - particularly downhill racing (DH), Enduro riding Freeride (FR) require wider, stronger rims, which can take sustained punishment without folding like a taco (not good).The three most common MTB rim diameters are 26", 27.5" (sometimes referred to as 650b) and 29" (see our ‘Wheels' buying guide for an-depth explanation as to the differences between the three and the history of the standards).

Whichever rim diameter you opt for will be determined by your bike type (you can't put 27.5" rims on a bike made for 26" wheels, for example), which in turn will depend on the type of riding you intend to do and your personal preference in wheel sizes.