Rugged, Fortified JB4 Protection Our most protective case in the JB4 line-up. The sleek, stylish JB4 billet aluminum enclosure withstands drops, shocks and bumps while protecting electronics from dirt and water.

CNC machined with a rubber sealing ring. Ideal for all-weather F and G chassis BMW and other JB4 applications. Compatible with all BMS JB4 & Stage 1 tuners. Made in USA. Note we also offer scratched enclosures at a discounted price.

Scratched enclosures may have some mild scratches and scrapes from installation or rubbing against other enclosures

What's Included

but still look great and function like new!
Version 2 case bolts are M3x.5 and use a 2.5mm Allen wrench
Version 1 case bolts are 6-32 x 5/8" and use 7/64" Allen wrench
Compatible with all JB4 & BMS Stage 1 tuners

Scratched enclosures may have some mild scratches and scrapes from installation or rubbing against other enclosures

What's Included

but still look great and function like new!
Version 2 case bolts are M3x.5 and use a 2.5mm Allen wrench
Version 1 case bolts are 6-32 x 5/8" and use 7/64" Allen wrench
Compatible with all JB4 & BMS Stage 1 tuners

JB4 Billet Aluminum Enclosure

What's Included

JB4 Billet Aluminum Enclosure

What's Included