Collection: B58 Engine Collection

The B58 inline-six — found in the A90 MK5 Toyota Supra — is already proving itself one of the most tuning-friendly modern engines, capable of 800+ horsepower on the right supporting hardware. J-Spec Garage's B58 Collection covers the engine components to build a B58 that holds big boost reliably.

Shop stroker kits, forged pistons and rods, camshafts, head studs, gaskets, and precision engine components from Brian Crower and other trusted brands. Whether you're refreshing a high-mileage motor or assembling a built block for a high-horsepower A90, this collection has the B58 parts to do it right — backed by our price match guarantee and fast US shipping.

Shop the full B58 engine parts collection below.