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Thread: Upgrade GQ TB42S to GU brakes

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    Upgrade GQ TB42S to GU brakes

    Hi Folks, I want to upgrade my GQ front brakes as part of an engineering approval for a NA Barra engine swap. I've seen quite a bit of discussion on GU front brakes being a straight swap with a couple of conditions like larger 17 inch rims and shorter calliper bolts required along with an upgraded brake booster. There seem to be a few GU style 3rd party upgrade kits available on the market but they can be very expensive ~$2,500 ... Can someone confirm that the GU front brakes are a bolt on? Can anyone suggest a more cost effective way to upgrade the front brakes and still achieve engineering approval. I live in NSW and the engineering folks here will likely insist on testing the brakes to make sure they comply with the standards required. Cheers, Chris

  2. The Following User Says Thank You to chris 89 GQ For This Useful Post:

    mudnut (11th September 2025)

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