Contact Us

Black Widow 300 V8 Nitrous plate Kit

Be the first to review this product

Availability: In stock


Quick Overview

The Wizards of NOS Black Widow 300 Spider Nitrous Plate System is a complete wet plate system intended for V8 engines running 4 barrel Holley carbs, that is capable of flowing an incredible 300 BHP.

* Required Fields


Black Widow 4150 Spider Plate

Double click on above image to view full picture

Zoom Out
Zoom In

More Views

  • Black Widow 4150 Spider Plate


The Wizards of NOS Black Widow Spider 300 Nitrous system utilises the most advanced plate design in the world and is available to suit most V8 engines.

Its unique design sets it head and shoulder above all other plates, as only the WON BWS nitrous kit offers all the benefits of a direct port nitrous system plus all the benefits of a plate (without the disadvantages of either), all in one compact package.

Black Widow Spider nitrous systems are offered in a range of power levels that can deliver addition power up to 800 bhp, with the Black Widow Spider 300 specifically, being capable of delivering up to 300bhp.

The BWS plate system benefits from numerous unique features as standard equipment, which offer substantial advantages over all other options.

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.

All WON BWS systems benefit from;

  • Lifetime guarantee.
  • The ultimate in high quality components, which are machined to aerospace standards
  • The famous WON Direct Port Black Widow Spider nitrous plate.
  • The famous WON billet alloy X-10 Nitrous Pulsoids.
  • EU specification nitrous bottle
  • The WON billet alloy FlowMax nitrous valve, with our unique SPRV.
  • The Laserlite QD nitrous bottle mounting system.

If you want a simple to fit, reasonably priced system that delivers maximum reliability and power; the Black Widow Spider 300 nitrous system has been designed and developed with you in mind. This system can give you the competitive edge in a race situation.

With all WON components being manufactured to such extremely high standards, the Black Widow range offers peace of mind as well impressive results and all at a competitive price.

Parts include;

  • 1 x 4150 or 4500 Spider Plate (as required)
  • 4 x 9" length 4mm SS supply lines from Pulsoids to Spider
  • 10 x 4mm retaining nuts and olives 
  • 2 x 4AN to 5mm billet alloy Y-blocks
  • 2 x Pair of 150 HP X-10 Pulsoids (nitrous & fuel)
  • 4 x Pairs of Pulsoid to Spider mounting brackets
  • 4 x 12" length 5mm SS lines
  • 1 x 1m length 4AN braided fuel supply hose
  • 1 x 5m length 4AN braided nitrous supply hose
  • 5 x 5mm nuts and olives
  • 1 x 11lb bottle with Maxflow Valve
  • 1 x Throttle activated micro switch & bracket 
  • 1 x Arming switch w/ aircraft style cover 
  • 1 x Electrical connectors and wire pack

Whether you just want the famous WON experience or you need the ultimate power to win races, the Black Widow will deliver exactly what you want - order online NOW!

*Bottles shipped empty

Although the image used may not be a true representation of the parts included, the parts list is 100% reliable.

Installation Manual


Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.