Razor Speed Freeks

From Lexicanum

The Razor Speed Freek tribe is a Speed Freek tribe, unusual in that it's made up of Goffs. The tribe is from the Ork held planet of Deke's World under the iron rule of the Great Despot of Dregruk. The tribe drives heavily kustomised black vehicles. The tribe's Warlord Razorhed doesn't believe the Orkish saying about red vehicles going faster, insisting all his boyz drive black buggies and trukks, decorated with black flame patterns.

They were at the forefront of Ghazghkull Thraka's invasion of Armageddon during the Third War for Armageddon, in which they destroyed four companies of the Celestial Lions Chapter.

Sources

Armageddon Website