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Pro-Series BD4 - 350 BHP Dry Motorcycle Nitrous Kit

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Quick Overview

The Pro-Series 350BD-4 is a ‘dry’ system designed specifically for 4 cylinder, fuel injected competition bikes and manufactured to the highest possible standards.  The unique concept behind the Pro-Series 350BD-4 makes it the most effective direct port dry system on the market. 

Wizards of NOS Pro-Series BD2 250 bhp bike dry nitrous kit

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Wizards of NOS - Pro-Series BD4-350 - Dry Motorcycle Nitrous Kit


The Pro-Series BD4-350 is a ‘dry’ nitrous system that is manufactured to the highest possible standards and designed specifically for 4 cylinder, fuel injected competition bikes. The unique concept behind the Pro Series BD4-350 makes it the most advanced and most effective direct port dry system on the market, capable of increasing engine power by up to 350 HP.


The distinctive features of the Pro-Series BD4-350 are;

1)     Its unique use of Y-Blocks rather than a rail or shower heads to achieve perfect distribution.

2)     Its unique nitrous Discharge Tubes, which eliminate the drawbacks of nozzles and when mounted correctly act as air amplifiers and increase the airflow into the engine along with the nitrous.


The Pro-Series BD4-350 offers;

1)     Superior performance at a very competitive price

2)     Peace of mind due to reliably and effectively delivering the exact volume of nitrous oxide required, when required.

No other system offers such a desirable combination of ease of fitting, advanced technology and superior performance. This system benefits from all the unique and high quality features expected of a high end WON nitrous system.

Independent tests have proven that our Pro Series BD4-350 EX will outperform any other direct port kit on the market bar none, whilst being more engine friendly.

The WON design team put a great deal of thought into creating the Pro Series BD4-350 system, to ensure it delivers the best for you and your bike. If want up to 350 extra HP and the most advanced injection design available, why search further, only to find a more difficult to fit and less effective system, when you’ve already found the best?

Containing the same Pulsoids as used on Cecil Towner’s world record destroying 6 second Pro Street bike, ridden by Ryan Schnitz


· Lifetime Warranty on all components.

· Anodised billet alloy Pulsoid that will never wear out, guaranteed.

· Anodised billet alloy bottle valve. 

· Anodised billet alloy Y-Blocks.

· Medical grade stainless steel Nitrous Discharge Tubes.

· Polished stainless steel component mounting brackets.

· 24/7 tech support.

Parts Included:

  • 4 x Nitrous Discharge Tubes
  • 5 x 4mm Nuts & Olives
  • 2 x Billet alloy Y-Block 5 - 4mm
  • 1 x Billet alloy Y-Block 5mm
  • 2 x 2" of 5mm SS nitrous supply tube from Y-blocks to Injectors
  • 1 x 2" of 5mm SS nitrous supply tube from Pulsoid to Y-block
  • 7 x 5mm Nuts & Olives
  • 1 x X-10 350 hp Pulsoid (nitrous ONLY)
  • 1 x 4 AN braided nitrous supply hose (1m long)
  • 1 x 2.5 lb nitrous bottle with billet alloy RACE spec MaxFlow valve
  • 1 x Arming switch w/ aircraft style cover
  • 1 x TPS Switch
  • 1 x Electrical connectors & wire pack
  • 2 x Nitrous metering jets (appropriate sizes)
  • Fitting instructions & stickers.

*Note - The picture/s may not be an exact representation of the actual system.

N.B. Being a ‘dry’ system the customer is responsible for ensuring the ‘essential’ additional fuel is added to the engine for optimum performance and reliable results.

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Yours Sincerely, The Wizards of NOS Team