Product Description
Upgrade your Honda GX240, 270, 340, or 390 engine with this high-quality header pipe. Made from durable materials, this pipe has a 1.125" outer diameter and is designed to fit both 301cc and 420cc engines. Its precision engineering ensures optimal performance, providing a noticeable improvement in power and torque. The header pipe is easy to install and comes with all the necessary hardware, making it a hassle-free upgrade for your engine. So if you're looking to boost the performance of your Honda GX240, 270, 340, or 390 engine, this header pipe is a great choice!
Large ID header pipe for the Predator 301cc and 420cc, Honda GX240,270,340,390. Stud spacing on header flange is 2" center to center, outside diameter is 1.125". This pipe is a very easy and simple part to install and it allows your engine to flow exhaust more efficiently which means more power.
For best performance from this header pipe add the Predator Performance Air Filter Adapter Kit (KDPRED301-420AF) to your engine.
Will not fit new non hemi model 420
We strongly recommend using the Header Support to prevent pipe from breaking.