Toyota GR Supra GT4 boosted to 430hp


Those hoping for a more powerful Toyota Supra should find today’s announcement from Gazoo Racing racing rather exciting. The Japanese marque has confirmed that its upcoming GT4 machine will use a 430hp and 479lb ft straight-six when it reaches tracks in 2020, where it’ll face the likes of the new Saleen 1 GT4 and existing challengers from Porsche, McLaren et al in what’s fast-becoming one of the best-supplied categories in motorsport.

Extracting more power from the Toyota’s B58 straight-six heart needn’t have been difficult, given that its capacity and cylinder count matches the F80 M3's 431hp motor and Litchfield's recent efforts to extract 450hp from it. But the GR-influenced 110hp bump in power for the GT4 car marks the first time a Toyota-produced Supra has reached such heights. We needn’t explain why it adds fuel to anticipatory flames for a quicker, more focussed version of the two-door road car, which has pretty much been rumoured since the moment the J29 Supras arrived in the spring.


Such a car could even be based on the GT4 racer, since class regulations dictate minimal modifications. The GT4’s engine improvements come thanks in part to Akrapovic’s exhaust (likely related to the one already offered for the road car) and a new engine map. While the GT4’s exterior changes centre around a front splitter and fixed rear wing. Underneath, the MacPherson strut front and multi-link rear suspension gains stiffer KW dampers, and there are bigger six- and four-piston brake calipers to complete the makeover. Not exactly ground-breaking stuff.

Even the gearbox is only a modified automatic with seven rather than the road car’s eight ratios. Although as a proper racing car, the GT4 does go the full hog and also get slick tyres, a motorsport differential, a fully stripped-out interior with a roll-cage, a bucket seat and six-point harness. It weighs only 1,350kg, meaning it’s a substantial 220kg less than the street Supra – and among the very lightest of the GT4 field before any Balance of Performance weight is added.

The first Supra GT4s will be ready for March next year, just in time for the motorsport season to kick-off. Gazoo Racing will also debut a 620hp four-pot version of the two-door for the more exotic Super GT series in Japan a month later, meaning the Supra should become a familiar sight on race tracks the world over pretty quickly. A nice build up to that hotter road version, some might say.



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Comments (10) Join the discussion on the forum

  • Tcooc168 29 Oct 2019

    Really wanted to like the new Supra (loved and once owned the an A80 in the past) but I just can’t, nothing to do with the way it looks, exteriors is not offensive, interiors is OK and I’m sure it drives well.

    But it just doesn’t feel that special, not sure if it has anything to do with BMW involvements but I wouldn’t consider one.

    Shame on you Toyota! I expected better!

  • LukeDM 29 Oct 2019

    The F80 M3 doesn’t use this engine. It uses the S55, which has been mentioned in many PistonHeads articles?

  • richthebike 29 Oct 2019

    LukeDM said:
    The F80 M3 doesn’t use this engine. It uses the S55, which has been mentioned in many PistonHeads articles?
    This. Very odd that this slipped through the net.

  • xjay1337 29 Oct 2019

    richthebike said:
    This. Very odd that this slipped through the net.
    I've read it and only says it has the same cylinder / power etc.

    Looks good :-)

  • janesmith1950 29 Oct 2019

    LukeDM said:
    The F80 M3 doesn’t use this engine. It uses the S55, which has been mentioned in many PistonHeads articles?
    This article doesn't say it uses the same engine as the F80.

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