Initially supplied by Perkins Engines then Cummins, the current supplier is AGCO SISU Power.

Most Fastrac axles have a central differential and epicyclic gearing reduction units built into the hub ends, where the wheel bolts.

The 7000 Series rear axle has a central differential and has in-board epicyclic gearing reduction units.

An automatic Global Positioning System-controlled steering system using a (Differential GPS) is available for the 3000, 4000, 7000 and 8000 series machines.

All models are fitted with large diameter external disc brakes at both front and rear individually on each wheel.

An anti-lock braking system (ABS) is fitted on some models, depending on the maximum vehicle speed and legal requirements.

The most recent fastrac iteration, the 4000 series tractors, have forward sloping cabs, similar to those on combine harvesters.

JCB currently holds the world record for the Fastest Tractor (Modified),[3] this was achieved on 23 October 2019 by driver Guy Martin, averaging 217.570 km/h (135.19 mph) over two timed kilometres, with a top speed of 153.771 mph (247.47 km/h), in Elvington, North Yorkshire.

[4] A JCB Fastrac was chosen by BBC's Top Gear host Jeremy Clarkson.