For this year’s SEMA show, the not so 'Big Three' US manufacturers were out in force, collaborating with some of the biggest names in customising. Here’s the pick of their official concepts.

General Motors rolled out four Camaros, including a race-ready, twin-turbocharged V-6 concept built specifically for Jay Leno.

The Camaro Synergy concept showed a new, limited-production exterior color and a number of production accessories and custom touches.

The Camaro Chroma, an SS-based concept with a number of future accessories

The Camaro Dusk, which incorporates current and proposed accessories to create a contemporary tuner aesthetic

And for truck lovers, they showed this, ZR2-badged Chevrolet Silverado concept