The FMF Factory 4.1 Titanium Full Systems are the holy grail of aftermarket exhaust upgrades. Combining a Titanium Factory 4.1 Muffler with an FMF Titanium Megabomb Header pipe, you'll want to make sure you're holding on to your pants when you take this thing out riding for the first time. The Factory 4.1 Muffler will work wonders when it comes to improving the overall speed and power of your four-stroke machine - these are the very same pipes that you find on professional race team bikes all around the world - straight out of the box. And with the Megabomb header providing you with everything you need when it comes to bottom to mid-range torque and responsiveness, you'll find yourself dealing with a whole new beast next time you head out riding.

We carry Full Titanium Factory 4.1 Exhausts for the majority of your popular recent model four-stroke dirt bikes, so if you're riding a newer model race bike we should definitely have you covered. Just chuck your machine into our Parts Finder and find FMF to see what we have in stock for your bike. Keep in mind that if we don't have anything available for your model, you can always contact our customer service team who will be more than happy to try and track down the parts you need. And while these things might not be on the cheap end of the price scale, they're certainly worth the investment, especially with MXstore offering free shipping on all orders of FMF Factory 4.1 Full Systems. Win-win situation!

We got our hands on an FMF Factory 4.1 Titanium System for our 2017 Honda CRF450R Project Bike, and can tell you right now that the performance upgrades we experienced compared to the stock standard exhaust system were almost unbelievable! We also shot this handy little how-to video below, where we take you through the surprisingly simple steps involved in installing one of these beauties on your dirt bike. Check it out for yourself and see just how easy it is.