The Hybrid Racing big bore K-series throttle bodies are by far the most feature packed throttle bodies on the market. When we designed this throttle body, we wanted to create a reliable product that allowed as much flexibility in your setup as possible.
One simple, but very notable feature of this throttle body is the dual bolt pattern. By incorporating two bolt patterns, this throttle body is able to bolt directly to a PRB or RBC intake manifold. By eliminating the need for an adapter when upgrading from a PRB to RBC intake manifold, this throttle body saves you as much as $75. Another great feature on this throttle body is the ability to delete or retain your factory cruise control. This is the only big bore throttle body on the market that allows you to retain cruise control. Who says you can’t make serious power AND keep your creature comforts?
It should be noted that a big bore throttle body should never be used on an intake manifold that has not had the inlet bored out to match the bore of the throttle body. A setup using a big bore throttle body mated to an OEM sized inlet port will yield lower performance than the OEM throttle body. That said, when boring the inlet on an intake manifold, it’s best to overbore slightly (about .25-.5mm is sufficient), to prevent the chance of a lip that could create turbulence. While many people will prefer to have a machine shop bore their manifold, if you are familiar with forming metal using a die grinder and sanding drum, you can bore your manifold yourself. If you are hesitant to bore your own manifold, you should consult a machine shop first. Hybrid Racing is able to supply prebored K-Series intake manifolds for an additional charge. Also, note that the use of a 74mm throttle body on a K-series intake manifold dictates that the boring process be a bit more involved. Because of IACV port geometry, boring a PRB, RBC, or RBB manifold to 74mm requires boring a 74mm hole, then welding the IACV passageway shut, and finally reboring the welded area back to 74mm. A 70mm throttle body requires a single boring operation only.
Generally Ships in 2-5 Business Days