Although the amazingly fast world record-holding Fastrac Two streamlined ‘racer’ will doubtless attract a lot of attention on the JCB stand, the latest version of the regular Fastrac 4220 offers some meaningful upgrades over the current machine.

Engine performance is unchanged with the switch to a Euro Stage 5 compliant version of the 6.6-litre AGCO Power engine; but its power and torque is now channelled through uprated JCB axles.

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Larger hubs and bearings, and larger kingpin bearings, should help on the durability front, and the beefed up hardware allows a 33% higher front axle load rating, enabling heavier implements to be carried on the front linkage.

Bigger diameter external discs all round upgrade braking capacity, especially during road travel at the tractor’s 60kph legal top speed, while traction benefits from two changes – a positively locking and larger front axle differential in place of the limited slip device; and new higher-specification tyre options.

The 30in and 34in ‘VF’ category tyres are said to complement the Fastrac’s inherent 50/50 unladen weight distribution and tractor-levelling front and rear active suspension by being capable of carrying a given weight at a lower inflation pressure than lesser tyres of similar size, thereby planting a larger rubber footprint.

For Fastrac 4000 Series tractors that undertake a lot of road or hard surface work, two new 28in and 30in block tread tyre options are available.

And on the precision farming front, a Trimble GFX-750 guidance package – which JCB says has been a popular after-market fitment – is now available as a factory-installed option.

Beefed-up axles, a locking front differential and new ‘VF’ tyre options are among upgrades to JCB Fastrac 4000 Series tractors.