Turn your 858 into a rocket with this stage 2 kit! making 40+ HP...
Our stage 1 is no questions asked, the best bang for your buck in the...
PREORDER The ONLY aligned Belt drive assembly on the market for the...
Our Billet Head for the Arctic Cat 858 is an easy way to bolt on some...
Get more power out of your Catalyst with this one simple mod! Our stage...
Get more power out of your Catalyst with this one simple mod! Our stage...
Get the most power out of your Catalyst with this complete kit that...
Get the most power out of your Catalyst with this complete kit! Our...
Well we all know that Arctic Cat really stepped up their game on the new 8000 DSI motor. It runs incredibly smooth, efficient, and responsive with much more low end and mid range torque. Now just take that new and improved motor and make it a 900! Wow what a fun machine it becomes! The 900 PROMAX2 Big Bore kit is the real deal. Build your own with... Well we all know that Arctic Cat...
The 450 Big Bore Kit really brings this 400's to life!! We have been doing the 900 big bore to the 800 for several years now, and they work great. The latest single cylinder version works great too! Much more low end torque and peak horsepower. The 450 Big Bore Kit really brings...
The TO THE MAX KIT comes with everything you need to bring the motor to maximum horsepower. PROMAX 900 Cylinders, Custom Wiseco pistons, Billet Head, Replaceable Dome inserts, Complete Top End Gasket set, Jaws Big Bore Pipe and Y pipe, our SSI Stainless Muffler, Boyesen Reed Valves, 55mm Pro Lite Throttle Bodies, Pro-Shift Clutching, and The IBEXX GOAT... The TO THE MAX KIT comes with...