It's the 5 title Series that introduced you to the meaning of HARDCORE. Get ready for a heavy metal onslaught of broken bikes, bones and blood as we embark on the most progressive riding ever to be documented on DVD.

Chain Reaction III includes footage from the Fourth Annual Jamaican Fat Tire Festival, NORBA & World Cup downhill, brain-dead freeriding, a slew of painful crashes and much more.

Chain Reaction 4 features the most in depth event coverage you will find of the Red Bull Rampage, the NORBA race series, the Rye Airfield Big Wheels Competition plus more.

Chain Reaction Five Worldwide takes you to four continents and shows the planet what East Coast Style is all about. The DH Productions' Stable of Knuckleheads has been unchained and they have unleashed their fury on the world.