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Predator 301 & 420 Performance Kit- OUT OF STOCK UNTIL MAY 1ST

$37.50 $33.45
(You save $4.05)

Product Description

Our predator performance air filter adapter kit is a very popular kit that includes a K&N style high flow air filter, aluminum air filter adapter, and an upgraded drilled main jet for the carburetor. This kit is a simple but very effective upgrade over the stock air box and exhaust.  With the added air flow, the more rich main jet is mandatory for optimal engine performance.  Filter inlet measures 2 7/16" ID and 2 7/8" OD and will vary in colors. Includes choke hold bracket as well.
Choose from red or blue filter, adapter is only available in black.

Compatible with:

  • Honda GX240 & GX270
  • Predators Engines 301cc & 420cc

Product Reviews

Write Review

  1. It's one of those 'Must Haves'

    Posted by Jim on 23rd Apr 2017

    These upgrades have me wondering why I waited so long. My package included the header pipe and with the increased air intake and the 420 jet, my Preditor 420cc has really come to life. It has never run this good, even when new.

  2. works fine

    Posted by pete albritton on 12th Apr 2017

    Extended 4 wheeler into side by side needed exhaust and air filter small enough to fit under top frame worked out great soon have it finished and in use.

  3. 420 performance kit Amazing

    Posted by James Franklin on 10th Apr 2017

    420 performance filter kit was one the best purchases Ive done for our engine. Quality made parts from adapter to filter. Cant wait to put this engine on something to feel the power its making.

  4. Predator 301 Performance Kit

    Posted by Will Hunt on 14th Mar 2017

    Great kit for the Predator 301. Our sons, 12 and 16, got it working within an hour. The design is very well thought out.

  5. 420cc performance kit

    Posted by Andrew Gambler on 10th Feb 2017

    Easy to install and helps get the most out of your predator motor. Very happy with the purchase.

  6. Worked great on my ironton 16hp engine. Sounds good too

    Posted by Clinton Christy on 17th Jan 2017


  7. 420 predator

    Posted by Dave on 17th Oct 2016

    Bought exaust pipe an high flow filter kit. One thing I liked about kit they put the jet you need in the kit no guessing. Seems to be running better an sounds great . Thanks

  8. Predator 301 & 420 Performance Kit

    Posted by John in FL on 23rd Jun 2016

    My 420 was flooding out but thanks to go-power sports for the new jet. Now she is running like a top!

  9. Predator Performace Parts

    Posted by John on 20th Jun 2016

    Couldn't wait to get this out of the box and try it on the track! Easy to install and it fit perfectly without any modifications. My kart now has a lot more power and it brought my 40 series torque converter alive. As always, product was shipped quickly and intact along with status updates along the way. Go power sports delivers everyone, thanks and keep up great work.

* Free Shipping on most orders over $200 on most orders within the continental United States.

Adult signature required on all orders over $300.00!

* Certain bulk items and large unit purchases, such as go kart kits may not be eligible for free shipping offers.
* Free Shipping offers can take 1 to 3 business days to process and 5 to 10 additional days to arrive.
* For all Free Shipping offers, we will ship via our carrier and method of choice. We cannot guarantee a specific carrier or shipping method with Free Shipping offers.
* If you have a need for the product by a certain date, we recommend you choose to Upgrade to your Shipping Method at checkout
* Please allow 24 to 48 additional hours (during high demand periods such as Christmas).
* Exclusions apply (no International Orders receive free shipping.)
Listed shipping charges are for shipments for the U.S. and Canada.
* Shipments to all other countries will incur additional shipping charges, call for a quote.
* Parts are shipped via Fedex or USPS to your address.
* Fedex shipments require a street address.
* You must include a complete address.
* Your order will not be shipped without a full address.
* Same day shipping Monday thru Friday if placed before 1PM
* Standard business delivery is Monday - Friday
* Standard home delivery is Tuesday - Saturday
* Secound Day does not include weekends or holidays




All import duties and taxes that your country applies to purchases are the responsibility of the receiving customer. Please be aware of these charges before you order. Our shipping quote does not include these charges.  If you refuse or send back the package, unfortunately the package will be destroyed and the order will not be refunded due to the high cost of paying return duties and taxes. 

Free Shipping offers DO NOT apply to International shipments.

We only use Fedex for shipping International orders.

Due to the increased risk of fraudulent activity, we may have to ask for further information for your order. Please include a valid email address and telephone number with your order.

Due to the high cost of shipping to International locations, we recommend calling or emailing us with any questions you may have about the product and it's sizing. Unfortunately, due to the high cost of shipping, International orders are NOT eligible for returns or exchanges.

Order Cancellations, Refusals, and Address Changes

Requests must be made by phone or email. Requests must be made by 11AM EST the day after the order was placed. If the order was placed after 12PM, on a weekend or on a holiday; the timeframe will roll-over to 11AM EST on the next business weekday.

If sends the correct items to the address on order and it is refused by the customer, all shipping charges to and from the customer will be deducted from the refund. This includes all shipping charges for any items advertising Free Shipping.

If you find yourself in a special circumstance that requires you to refuse a package, please contact us first for approval.

Adding Additional Items to a Previous Order

We cannot guarantee that requests to add items to previous order will ship with the original order. We will make every attempt to do so but we cannot guarantee it. Additional shipping charges will apply. 

If You Input The Wrong Ship To Address

Be sure to double check your shipping information once you get your order confirmation email.

Unfortunately, every carrier charges additional amounts to either redirect or reship packages due to incorrect addresses. If you omit the correct street address, apartment number, PO box, zip code, etc. we have no choice but to pass on the additional charges to you for the additional cost. This can range from $5 to $35 depending upon the region and the reason. Please contact us as soon as possible if you have entered the wrong address on the order.

Back Orders

Despite our best efforts, particularly popular items can sell out and when this is the case, we will inform you of the expected earliest delivery date. Please inform us should you wish to cancel at any time and you will receive a full refund.

Return Guidelines
No returns on electrical items.

  1. Click Here to request an RMA from your Completed Orders section in the My Account section.
  2. The item(s) must be returned within 30 days of the order date.
  3. Include the original receipt or a copy of receipt with the returned merchandise.
  4. The item(s) must be returned without being used or damaged in any way.
  5. Send the return items PREPAID to our warehouse at:
Returns Department

1375 S. Main St.
Keller, TX 76248

Product Videos

Predator Performance Air Filter with Adapter and Jet Upgrade 03:26

Predator performance engine air filter, carburetor jet with adapter for optimum air flow. #KartRacing #GoKartRepair

  • Predator Perfo...
    Predator performance engine air filter, carburetor jet with ad...
  • Changing the j...
    How to upgrade the jet in a go kart carburetor for better perf...

icorating5.png BEST BANG FOR BUCK!!!

Posted by Aaron, December 26, 2016

 I am very new to go karting, but luckily my kart had a stock 212 predator (with a performance header already installed).  Since this is just a for fun hobby my wife as imposed tight budget restrictions. So I knew if I wanted to make this thing fast  (obviously) I would have to be very careful with my purchases. I quickly decided the "212cc Predator Performance Air Filter, Adapter & Upgrade Jet" was the best way to start my project.

After a slight issue with the shipping (not Gopowersports fault, the shipper will remain nameless) that I've chalked up to the time of the year it is with the holiday season. In a true show of AMAZING customer service Go Powersports immediately resolved the situation before it really ever became one!

The kit comes exactly as advertised and as specified!! I chose the blue kit with yellow netting and it really changes the appearance of the engine.  But the great looks and ease of installation pale in comparison with the performance improvement!! To say it wakes up this engine would be an understatement! It improves power from idle to as far as you can Rev it! Throttle response and drive ability are also noticeably improved both in GPS data and the much more important seat of the pants-o-meter!

If I hadn't been fortunate enough to have already had the performance header I would have certainly gotten the header option. It is the combination of better air flow in (air filter and adaptor), more fuel (bigger carb jet & e-tube), more air out (performance header). Addressing all areas of engine performance at once gives you the largest improvement while laying the necessary foundations for all  future upgrades!

Next up:
Torque Convertor!
Billet flywheel (non hemi)!
Better valve springs!
Although new wheels and tires are probably going to be the next upgrade (safety)  I am currently running on mix-matched wheels and tires from garage donations 12-8 (or9)-6 and 11-6-6 because with the speeds this thing is doing it is very difficult to control!

Great job Go Powersports!!!  You've gained a customer for life!

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