Contact Us

Pro-Series 250 - Wet Motorcycle Nitrous Kit

Be the first to review this product

Availability: In stock


Quick Overview

Pro-Series 250 - direct port system for 4 cyl injected motorcycles.

Pro-Series 250 Wet Bike Kit

Double click on above image to view full picture

Zoom Out
Zoom In

More Views

  • Pro-Series 250 Wet Bike Kit

* Required Fields



Wizards of NOS - Pro-Series 250 - Wet Motorcycle Nitrous Kit


The unique concept behind the Pro-Series 250 is the most powerful yet most effective direct port single solenoid system on the market and is specifically designed for 4 cly motorcycles which are looking for bigger power increases. Tests have proven that in the vast majority of cases (when adding up to 250bhp) a Pro-Series 250 can out perform any other direct port kit, whilst being more user friendly.

No other system has such a desirable combination of low price, ease of fitting, user friendliness and superior performance. 

WON designers put great thought in to ease of fitting, performance and cost when developing this unique system (or concept), to make sure it ticks all the right boxes, for you and your bike. If you want up to 250 extra bhp, why search further, only to find a more difficult to fit, more expensive and less effective system, when you’ve already found the best?

· Lifetime Warranty on all components.

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

· Anodised billet alloy bottle valve. 

· Anodised billet alloy distribution block.

· CNC machined stainless steel Venom injectors.

· Polished stainless steel component mounting bracket.

· NO purge required.

 · 24/7 tech support.

*Although the picture/s may not be an exact representation of the actual system, the parts list below is 100% accurate. We are out of stock of the 2.5lb bottle pictured, so the system will now be supplied with a 20oz bottle. If you want a bigger bottle, I advise you to select the option without a bottle from the drop down menu and purchase a bottle from another source.

Parts Included:

4 x Nitrous Discharge Tubes

4 x Venom Injector (Fuel)

21 x 4mm nuts & olives

1m of 4mm nylon fuel supply line

4 x 15" of 4mm stainless steel nitrous supply tube

1 x 20oz bottle with billet alloy mini Maxflow valve

4 x Billet alloy Y-Block - 4mm

2 x Billet alloy Y-Block - 5 to 4mm

5 x 5mm nuts & olives

2 x 2" of 5mm SS nitrous supply tube

1pr x X-10 250 hp Pulsoids (Nitrous & Fuel)

1 x 1m of 4 AN braided nitrous supply hose 

1 x Throttle activated micro switch with laser cut polished stainless bracket

1 x Arming switch w/ aircraft style cover

1pk of Electrical connectors & wire pack

1 x Nitrous metering jet (appropriate size)


Product Tags

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

Get 5% Off now!

Customer Survey

Grab yourself 5% off your next order! Just enter your email and fill out our short survey to receive your voucher code.

             Poor 1 2 3 4 5 Excellent

Product Quality
Unsure which system
Will order later
Checkout Problem

Need more information? We have dedicated technical staff always ready to assist. Please call or email us on

Yours Sincerely, The Wizards of NOS Team