New 4L80E Overdrive Kits Can Handle Up to 1,000 HP. Johnny Hunkins | Jun 11, 2025. Turning Tricks: Adding a Trick Flow Small-Block Chevy Top-End to Our Summit Racing 427 Stroker.

It’s finally time. Time for an all-new XTR drivetrain from Shimano. We’ve been waiting for years.Not just for the next generation of XTR, but for a generation that had to reintroduce Di2 shifting to ...