Due to a patented removable runner design and the introduction of two additional runner sets, LSXR™ 102mm Intake Manifolds from FAST® now have the capability to shift torque and horsepower gains to a higher RPM than the original version, making them the most flexible options on the market. In addition to the original FAST® LSXR™ 102mm Intake Manifold & Runner Set, High HP and Race versions are now available. The new interchangeable, complementing runners are designed specifically for LS3, L99, L76 and L92* engines that are built for high performance applications. The High HP Runner Set is based on Daytona Prototype intakes and utilizes newly designed runners, which are shorter and straighter than conventional versions. The High HP version has been proven to make 8-10 horsepower over the original LSXR™ manifold with a 500-1000 RPM shift up in peak horsepower on LS3 performance engines. However, it maintains all of the same features and benefits of the standard LSXR version. The Race Runner Set features a short and straight runner design that rivals aluminum four-barrel intakes on horsepower potential. This manifold setup utilizes a race version of standard runners designed for all-out high RPM performance. It is ideal for race vehicles with serious performance modifications and race converters. The Race version provides a 15-30 horsepower gain with a 1000-2000 RPM shift up in peak horsepower, but will lose some low-end torque. The runners are interchangeable and available in kits so manifolds may be configured as the original LSXR™ with standard street runners, or the new HP or Race models. A master kit is also available featuring an intake manifold assembly and all three runner options.