Best of Freeride Downhill MTB 2015【HD】

We hope you enjoy the Video! :) Support us: http://frsportmotion.jimdo.com FRsportmotion - motion since 2014 There are several different styles of mountain biking, usually defined by the terrain, and therefore bikes employed. Styles of mountain bike riding and mountain bikes have evolved rapidly in recent years leading to terms such as Freeride and "Trail bike" being used to categorise mountain bikes. Definitions for the most widely used terms are listed below. Cross country (XC) mountain bikes are designed primarily around the discipline of cross country racing. Cross country racing with its emphasis on climbing as well as speed and endurance demands bikes that are both lightweight and efficient. In the 1980s and early 1990s XC mountain bikes typically consisted of a lightweight steel hardtail frame with rigid forks. Throughout the 1990s XC bikes evolved to incorporate lightweight aluminium frames and short travel (65 to 110 mm) front suspension forks. Recently full suspension designs have become more prevalent, and the use of advanced carbon fiber composites has allowed bike designers to produce full suspension designs under 10 kg. In recent years 29" wheels have become more popular too, the US men's and women's marathon cross-country races were won on 29ers in 2009 and 2010. The geometry of Cross Country bikes favours climbing ability and fast responses over descending and stability and as a result typical head angles are 70–71°. Although intended for off-road use, Cross Country mountain bikes with their emphasis on lightweight construction are not designed for use on the most steep or severe terrain. "Trail" Bikes are a development of XC bikes that are generally used by recreational mountain bikers either at purpose built "Trail centers" or on natural off-road trails. They usually have around 5" (120–140 mm) of travel, weigh 11 to 15 kilograms (24 to 33 lb), and have geometries slightly slacker than XC bikes, though not as slack as AM bikes. Examples include the Giant Trance, the Trek Fuel EX series, the Specialized Stumpjumper FSR, Polygon Collosus T Series and others. With less of an emphasis on weight, Trail Bikes are typically built to handle rougher terrain than dedicated XC bikes while having slacker head angles (69-68°) which provides greater stability while descending. Enduro/all-mountain (AM) bikes bridge the gap between cross-country and freeride bikes, such as the Trek Remedy series, Specialized enduro, typically weighing between 13 to 16 kilograms (29 to 35 lb). These bikes tend to feature greater suspension travel, frequently as much as 6 inches (150 mm) or 7" of front and rear travel, often adjustable on newer mid- and high-end bikes. They are designed to be able to climb and descend well, these bikes are intended to be ridden on all-day rides involving steep climbs and steep descents, hence the term 'all-mountain'. This is an upgraded entry level Downhill/Freeride bike: Specialized Bighit 2006 with 203 millimetres (8.0 in) of travel in the front and 190 millimetres (7.5 in) of travel in the back Downhill (DH) bikes typically have eight or more inches (200 mm) of suspension travel. They are built with frames that are strong, yet light, which often requires the use of more expensive alloys and very recently, carbon fiber. In the past few years, lighter downhill bikes have been getting below the 40 lbs mark (18 kg). Due to their typically large or high gears, long, plush travel and slack geometry angles, Downhill bikes are ideal only for riding down dedicated downhill trails and race courses. Downhill bikes have the most sag of Mountain Bikes to get ample traction to go fast over bumpy trails. Head Angles are often as slack as 62 degrees. Several types of bicycle speed records have been registered downhill. Due to the high-speed nature of downhill riding most bikes only have one chain ring in the front, a large bash guard and a chain guide, though many racers are now using chain guides without bash guards to reduce weight. Some manufacturers have experimented with designs featuring internal gearboxes built directly into the frame construction. This modification eliminates the need for the rear dérailleur mechanism but has not been embraced due to durability issues with the gearbox during the stresses of a DH race.