Catalyst 858 Stage 2

Turn your 858 into a rocket with this stage 2 kit! making 40+ HP midrange gains and an an impressive 20+ HP gain at peak RPM this kit is no joke.  The combination of the super torquey jaws pipe, Boyesen Reeds, Billet Head, tune and the ONLY true high performance CATALYST airbox on the market set this kit apart from our competitors! Works with the stock muffler and great at all elevations!

This kit features the best of the best for quality parts and can easily be upgraded to a stage 3 if you decide you want even more performance!

Our billet head makes serious gains at higher elevations by raising compression while still allowing you to run 91 octane fuel! At low elevation we've tested several variations that help bottom end and give you more resistance to detonation than the stock head!

Rigorously tested across the US and Canada from sea level to 10,000+ feet to ensure it doesn't skip a beat on you wherever you ride!

Kit includes:

Jaws 858 Big Shark Pipe and y-pipe

Boyesen Ported and polished reeds cages with dual stage pedals

Billet head

SSI PRO-FLO high performance Airbox

SSI reflash tool + 1 license allowing the ability to load on the stage 2 flash or the ability to flash back to stock

SSI clutch kit

**Please select correct OPTIONS in the dropdown menu before ordering**