MACSBOOST Custom Performance Products!

Improve the reliability of your Yamaha WaveRunner FX, Cruiser, GP1800R, FZR, FZS SHO/SVHO supercharger by adding a MACSBOOST high performance blow off valve.  Fits all years 1.8 Waverunner Supercharged engines up through 2024 and on.

The kit includes our exclusive heavy duty custom silicone coupler, vacuum line, vacuum T, all stainless, gapless hose clamp for BOV port, and our high quality custom valved sequential style SSQV SQV BOV.  Others may sell similar looking kits but they are not the same. Inferior hoses, Slow opening valves.  Watch our video of the difference in valves.  

Easy 10 minute install:  Only a screwdriver required on most models.  The valve and adapter circlip come pre-assembled.    No removal of the manifold is required, no drilling or tapping.  Our kit comes with a pre-assembled barbed T and connects to the map sensor. No Removal of the stock airbox.  

PRE ASSEMBLED and BENCH TESTED:

We save you time aggravation and money.  Each valve is pre assembled to the adapter using the aerospace circlip.  Pre-Treated with corrosion inhibitor and individually bench tested with vacuum to assure proper performance and operation when you receive it.  

Ebay no longer allows linked videos: You can play a video of our BOV in action using this youtube video ID:  vgf8junOvoo

The SVHO superchargers are known to shear gear teeth, fail clutches, twist supercharger shafts and destroy your very expensive supercharger.  Going from full boost to closed throttle causes the most stress on the shaft, gear and clutch.  The BOV gives a safe place for the compressed air to dump and reduce the mechanical stress on the compressor and clutch assembly.  The MACSBOOST blow off valve is your best defense against premature clutch damage.  

QUALITY: Attention to detail is what makes MACSBOOST the best.  Our hose is CNC designed for a perfect fit. Ultra durable with 5 layers of polyester reinforcement and a perfectly sized BOV port. We use extra thick silicone vacuum tubing that needs no zip ties, Premium euroseal All stainless OE style gapless hose clamp and barbed nylon hose tees.  Our valve assembly is also assembled with a USA made aerospace stainless steel circlip.  You won't find this anywhere else!  This is the nicest, highest performance kit at any price.  Be sure to read our ebay reviews on this part.

HIGHEST PERFORMANCE: 

The sequential design of the BOV allows for the fastest response while our exclusive large port ensures maximum flow.  You won't find a better performing BOV kit.  The macsboost valve comes with a larger hose port than RIVA and other kits.  It is designed to match the valve ports perfectly.  Not too small or two big.

BEWARE OF KNOCK OFFS:

Ha, they even use our pictures photoshopped to remove our logo. They use our descriptions and similar colors.  Look closely.  Their valves open slowly and hoses are thin and weak.  There's no comparison in quality or durability, nor are they assembled or tested.  We are flattered. Look at the the quantity sold and know you are getting the quality part from the best in the business.

Does not include the velocity stack intake or crankcase breather.  Please check our other listing for the Stage 1 Kit that includes our hydrophobic velocity stack intake.  One stop shopping with everything you need for peak performance and reliability. https://www.ebay.com/itm/233621174388