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Pro-Series 300c4/2 special direct port system for flat 4 carburetted engines

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Street-Blaster 300c4 2 pairs Pulsoids

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  • Street-Blaster 300c4 2 pairs Pulsoids


The Pro-Series 300c4/2 is a special direct port system specifically to suit flat 4, carburetted engines. This twin pair Pulsoid system delivers exceptional results, without the potential risks associated with using a single pair of Pulsoids.

The extra pair of Pulsoids in the Pro-Series 300c/2 ensures that on flat 4 engines;

  • There is no delay in power delivery.
  • There is no risk of a backfire due to excessively long outlet pipes. 
  • Better results.

The Pro 300c4/2 benefits from numerous unique features as standard equipment, which offer substantial advantages over all other brands.

Click here for a comparison of WON vs other brands.

Click here to see the results of an independant test done on a WON kit vs a Nytrex kit.


  • Lifetime guarantee. 
  • Atomising nozzles.
  • Discharge tubes.
  • Billet alloy Pulsoids.
  • Micro bore nylon hose for maximum efficiency.
  • EU specification nitrous bottle with FlowMax valve & SPRV.
  • Laserlite QD nitrous bottle mounting system.

If you want a simple to fit, well priced system that delivers maximum reliability and power; the Pro-Series 300c4/2 has been developed by WON with you in mind. This system is for race use, to gain a competitive edge.  The Pro-Series 300c4/2 can deliver a boost of up to 300bhp, whenever you need a burst of acceleration.  Utilising our highest quality components, our Pro-Series system - the Pro-Series 300c4/2 offers peace of mind and impressive results at a very competitive price.

Whether you need or just want to experience the WON buzz, a Pro-Series 300c4/2 can deliver - order online NOW!

Parts Included:

·        4 x Atomising nozzles.

·        4 x Discharge Tubes.

·        2prs x Billet alloy Pulsoids with CNC machined SS fittings and laser cut mounting plates.

·        1 x 11 lb bottle with Max-flow Valve.*

·        1 x Laserlite polished stainless steel QD bottle mounting system.

·        1 x Y-pieces 5mm.

·        4 x Y-pieces 4mm. 

·        1 x Fuel adapter - varies per application.

·        1 x Throttle activated micro switch & bracket (electronic TPS upgrade available for an additional charge).

·        1 x Arming switch w/ aircraft style cover.

·        1 x Electrical connectors & wire pack.

·        5m length of 4AN braided hose supply pipe.

·        5mm to 4AN Y-Block

·        2m of 5mm nylon fuel supply pipe.

·        2m of 4mm nylon supply lines from Pulsoids to Injectors.

·        2m of 4mm nylon supply lines from Pulsoids to Injectors.

·        4 x 2" of 4mm SS tube from Pulsoids to Y-Blocks.

·        25 x 4mm retaining nuts and olives for nylon lines.

·        15 x 5mm retaining nuts and olives for nylon lines.

·        2prs x Metering Jets (suitable for your application)

·        4 x stickers  

·        Fitting instructions & stickers

*Bottle shipped empty

Although it is indisputable that our nylon supply pipe is the best option for customers who don't need to flow more than 300bhp and who live in mild climates, if you’d prefer to use braided hose or need it to suit a race regulation or a hot climate, it can be selected from the drop down menu.  


SB150C4 Installation Manual


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