About Us

Our Company

GR-BOX specializes in the construction and overhaul of gearboxes and rare components for classic road, rally, and racing cars.

For over 20 years, GR-BOX has been an international reference for the quality and technical precision of its historic transmissions. We offer original and custom ZF and Getrag gearboxes, gear reconstruction, and advanced technical modifications. Our large stock ensures immediate availability of rare and hard-to-find parts.

Original and custom-made spare parts
Craftsmanship experience and modern technologies
Direct and specialized technical support
Full warranty on every product

We work closely with workshops and teams across Europe, providing technical solutions that help win historic rallies and prestigious competitions.

What We Offer

Wide range of complete gearboxes and rare parts:

Among our flagship products are ZF 5DS-25/2 gearboxes for Fiat Dino, Alfa Romeo Montreal, BMW M1, and other legendary vehicles. We also supply Getrag 265 Dogleg gearboxes for iconic models such as Opel Ascona, BMW M3 E30, Volvo 240 Turbo, Mercedes 190, and Ford Sierra Cosworth 2WD Group A.

We are specialists in performance parts for Pinto, Cosworth BDA and BDG engines, X-flow engines, English and Atlas axles, Rocket 4-speed gearboxes, and Sierra type 9 gearboxes.

We can also assist with the complete setup of your Ford Escort Mk1 and Mk2, providing all the components needed for historic rallying and competition.

Testimonials & Collaborations

“ Thanks to GR-BOX, our BMW M3 E30 achieved outstanding results in historic rallies. Unmatched quality and reliability. ”

Motorsport Workshop DE

“ GR-BOX’s Getrag gearbox significantly improved the performance of our Sierra Cosworth, bringing home major wins. ”

Rally Team FR

GR-BOX is an official supplier to teams and specialist workshops in Germany, France, the UK, Scandinavia, and the USA, contributing to success in numerous international historic championships.