RJ Anderson’s outrageous RZR roosts with STI Vortex V-Roll tires.

Ruthless Motor Sports goes rock crawling and sand duning with STI Roctanes on HD Beadlocks

Pull four massive holeshots and win with Tech 4 MX tires at Glen Helen Quad-X goes sand drag racing with STI V-Roll tires

ATV Television talks about the STI Yamaha Grizzly 300 tire/wheel kit

ATV Television hits the trail with 14-inch Black Diamonds on HD2 wheels

ATV Television previews its test of 14-inch Black Diamond XTRs

More winter work for the STI Black Diamond XTR by Kenny Lone

Deep snow testing of the STI Black Diamond XTRs by Kenny “Rubiranch” Lone

Nasty trails with Kenny Lone and his STI HD2s mounted with Black Diamond XTRs

Kenny “Rubiranch” Lone tests STI Black Diamonds on a 2012 Polaris Touring 550 EPS

More from ATV Television on the STI Black Diamonds

ATV Television Product Review – STI Black Diamonds First Impression

More from BigRockKenny on his Black Diamonds and HD1 Slik-Kotes

From the Saddle of BigRock Kenny’s Rubicon

On the Paiute Trail with BigRockKenny

BigRockKenny and his STI-equipped Honda Rubicon

Trail Testing Black Diamonds and HD2s

Drive-By RZR with STI Black Diamonds and HD2s

Hill Testing Black Diamonds and HD2s

On the Move in Bedford, Kentucky, with STI

STI Black Diamond Tires and HD2 Wheels on RZR

Trail Riding on a Polaris RZR with STI Tires & Wheels

A fascinating bird’s eye view of the Black Diamond and HD2 in action

ATV Television tests Black Diamond tires and HD Alloy wheels

Rocking out with the Black Diamond and HD2

ATV Television previews the Black Diamond

ATV Television previews the HD2 wheel

Dirt Wheels tests Black Diamond tires and HD2 wheels on a Polaris RZR

2011 Yamaha Quad-X Racing Series, Presented by STI

Introducing the Tech 4 XC