Catalyst 858 Stage 3

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Our best performing 858 kit! making 50+ HP midrange gains and an an impressive 30+ HP gain at peak RPM this kit is no joke.  The combination of the super torquey jaws pipe, Boyesen Reeds, billet head, tune, 55mm Throttle Bodies and the ONLY true high performance CATALYST airbox on the market set this kit apart from our competitors! 

**PREORDER, Kits to ship around Christmas**

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USD $3,299.95

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**PREORDER, Kits to ship around Christmas**

Our best performing 858 kit! making 50+ HP midrange gains and an an impressive 30+ HP gain at peak RPM this kit is no joke.  The combination of the super torquey jaws pipe, Boyesen Reeds, billet head, tune, 55mm Throttle Bodies and the ONLY true high performance CATALYST airbox on the market set this kit apart from our competitors! 

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!

NOTE: Upgrading from Stage 2 - Stage 3 will need reeds and Throttle bodies to run correctly!

Kit includes:

Jaws 858 Big Shark Pipe and y-pipe

Boyesen 55mm Ported and polished reeds cages with dual stage pedals

SSI 55mm Throttle Bodies

Billet head

SSI PRO-FLO high performance Airbox

SSI reflash tool + 1 license allowing the ability to load on the stage 3 flash or the ability to flash back to stock

SSI clutch kit

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Catalyst 858 Stage 3

Catalyst 858 Stage 3

Our best performing 858 kit! making 50+ HP midrange gains and an an impressive 30+ HP gain at peak RPM this kit is no joke.  The combination of the super torquey jaws pipe, Boyesen Reeds, billet head, tune, 55mm Throttle Bodies and the ONLY true high performance CATALYST airbox on the market set this kit apart from our competitors! 

**PREORDER, Kits to ship around Christmas**

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