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4-TEK

The following products are designed for use with your Sea-Doo Jet Boat or boat equipped with a Sea-Doo 4-TEK engine

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If you still have questions, feel free to contact me at jeff@cobrajetsteering.com

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  1. Cobra Jet Steering for Sea-Doo / Rotax - Single Engine

    Cobra Jet Steering for ROTAX/Sea-Doo 4-TEC Engines

    MSRP: $230.00

    CJS Direct Discount Price: $199.99

    Cobra Jet Steering for 4-TEC engines being used in Scarab, Glastron, Chaparral & late model Sea-Doo boats

    Learn More
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Testimonials
  • Been meaning to chime in and tell you guys how awesome the Viper unit is. I now have 2 seasons with the 16 192 and wifey has only driven once for literally minutes. She just keep saying I can't keep t...

    via post on a jet boat forum

  • I love jet drives over props for many reasons even without cobra jet steering BUT I Installed at beginning of 2009 season. What a difference! Less problems with cross winds when docking. All together ...

    Gary

  • All I can say is wow! My wife and I purchased a 2000 seadoo challenger in March. Docking was a nightmare, I was absoulutly scared to death to pull into the launch ramp sometimes even jumping out of th...

    Aaron in Ohio

  • Testimonial for the Mercury Optimax system:

    Thanks much. Your invention saved my relationship! (with my new/used jet boat). During 15 years of owning two I/O's, I was careful (and ...

    email to CJS

  • All I have to say is THANK YOU!! I was going to trade my boat in and your fins made all the difference in the world!! I was scared to drive my boat without these, now I can control my boat and dock it...

    via email to CJS

  • Working as intended. Maneuvering around the docks is a blast now. I no longer look like a boob bouncing off stuff. Thanks.

    David Wisley

  • Installed the ultimate and fangs on my 2015 yamaha ar230. Easy install. Noticed the difference backing the boat off the trailer, straight as can be. We have a long no wake zone, the boat was much easi...

    William Eaton

  • This was the best thing I have ever done to my jet ski! I get out of the water faster, have more control and boy is it fun. I highly recommend this product. Ride Hard!

    Ride Hard

  • Hi Jeff - I installed the Cobra Jet Venom Ultimate fins last week. The difference in handling is night and day. Prior to the installation, my 2014 Yamaha SX 190 was very hard to steer at low speed bec...

    Pete Brown

  • OMG the difference! My husband and I recently bought a jet boat. We had several crashes at the marina where we docked the boat. I found the cobra steering fins. I mailed my nozzle to Jeff for my insta...

    Tracy Ftaiti

  • I have the CJS venom viper kit and I can assure you the kit performs exceptionally well. The attitude of the boat is completely changed on plane. It cuts through the water rather than on top. No mor...

    via JetBoaters.net Forum

  • Slow speed handing has greatly improved since the installation of the Cobra Steering. Which is what you promised and delivered to me VERY quickly. Order was received here in California four days after...

    David B

  • Customer review of ultimate ak and mega fang plus on a 21 foot Yamaha as opposed to thrust vectors. First off, install was easy. I had no trouble following instructions and the pictures provided. ...

    email to CJS

  • We received the steering fins this afternoon. I installed them and took the boat to the lake. They made a huge difference in the slow speed steering. I will tell others about my experience. Thanks aga...

    Mike

  • I have a pretty quick, modified XPL Seadoo. The design of the hull makes it unpredictable in chop. I have extended aftermarket sponsons and I tried your standard steering system along with the sponson...

    Ed B.

  • I spent 7 hours on the lake today fishing. The Viper is the single best piece of equipment I've purchased for this boat. I highly recommend it. Spent a lot of the time at idle fishing and can say ...

    from JetBoaters.net forums

  • So after a couple of months of going back and forth on whether to buy Lateral thrust reversers or try a new system all together we went with the Cobra Jet Viper NK's with Mega Fangs (can't really go w...

    Johnny H. in Parish, FL

  • I had another manufacturers"fins" on my boat and never really noticed much improvement in steering. I just replaced them with the Cobra Venom 16x's and I now notice a big improvement at all speeds eve...

    JDW

  • Oh my god! Jeff I wanted to send a note to thank you for several reasons. First your communication has been flawless, I ordered the fins last weekend. You responded immediately! Second, you sourced ch...

    Bill Haley

  • Just got back from towsurfing one of the outer reefs - wasn't real big but double to triple overhead (15 to 20' faces) and the ski worked GREAT! Comin' in hot to pick up my partner after he wiped out ...

    Peter

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