Downloads | Manuals/Bulletins/Installations

Looking for installation drawings, manuals, bulletins or ratio charts? Find them all here.

Need more? Contact our Sales team for more in-depth drawings.

Product Range Classic | Current Range

To date, we have designed more than 200 bespoke transmissions for our clients and are the only company to supply a complete semi-auto gearbox.

We also manufacture a range of 15 gearboxes designed to suit most modern motorsport applications for front and rear wheel drive, plus a range of classic gearboxes.

Welcome to Hewland Engineering

Hewland Engineering is the only company in the world which specialises solely in the design and manufacture of transmissions for competition cars. We don’t work in any other arena than the motorsport industry, which means that our entire 50 years of experience is focused on nothing but making gearboxes which help our customers win events and championships across the world..

You will find Hewland transmissions and components in nearly every category of motorsport, from the stages of the World Rally Championship in Super 1600, Group N and World Rally Cars, to the race circuits of Europe, North America, the Middle East and Asia in touring cars, sports cars, Nascars, single seat racers and LMPs..

This breadth of experience means we can rapidly develop a solution for any installation that is not only highly competitive in terms of its performance but also its cost. To date, we have designed more than 200 bespoke transmissions for our clients and are the only company to supply a complete semi-automatic gearbox. However, we also manufacture a range of 13 gearboxes designed to suit most modern motorsport applications for front and rear wheel drive, plus a range of classic gearboxes. We have the utmost belief in the performance of our transmissions..

At the end of the day, it is your success that drives our business.