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Sea-Doo 4-TEK Products
The following products are designed for use with your Sea-Doo Jet Boat or boat equipped with a Sea-Doo 4-TEK engine
If you still have questions, feel free to contact me at jeff@cobrajetsteering.com
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Cobra Jet Steering for ROTAX/Sea-Doo 4-TEC Engines
MSRP: $339.99
Buy Direct Discount Price only $219.99
Cobra Jet Steering for 4-TEC engines being used in Scarab, Glastron, Chaparral & late model Sea-Doo boats
Learn More
Testimonials
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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
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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
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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
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Hey Jeff, Installed them (Cobra Magnum AK and Fangs) in a jiffy! Had a little issue with the stock starboard tie rod bolt on the jet, they had locktite on the tie rod side and took a bit of work to...
via email to CJS
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I purchased your combo for the above boat. Easy Install, thanks, it's great. I talked to Yamaha Tec. Support, and the person I talked with said she has been constantly hearing about your product but d...
Michael Frug
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Jeff, sorry I didn't get back to you sooner with feedback I have been too busy enjoying the new boat. The Cobra jet steering fins have made all the difference in the world to the 2012 Yamaha AR190 in ...
Kevin Vaughn
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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.
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I need to share my recent experience with you and visitors to your web site. As you know I have had your steering system on my sea doo for nearly as long as I have had it, about two years. My girlfrie...
David
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I THOUGHT I MADE A $25,000 MISTAKE! I bought my first boat ever – 19’ Yamaha SX190 Jet boat and launched it only to discover that it was very difficult to steer and nearly impossible for m...
Jeff Pierce
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Jeff, the fins work amazing! We went out in 12 mph wind and coming back to the dock usually we'd be sweating it, but with the new fins on, man what a difference! We can't thank you enough, WOW!!! Open...
Penny Kennedy
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We purchased the cobra jet steering from you at the beginning of June. A couple viewings of your YouTube video later and the fins were installed! We took the boat out two weekends ago it was super win...
Amy Await-Reedy
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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
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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
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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
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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
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I purchased the SeaDoo Jetboat primarily because the waters here in Bradenton are so shallow. Jeff put on the steering mod and the handling is so much better. It has maneuverability at idle whereas be...
David Cooper
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Finally got to test out the CJS Viper steering system I purchased. I can’t believe the difference it makes in the handling of my Yamaha 190 FSH especially at idle speeds, maneuvering is now a breeze...
John & Pam
johnpammo@hughes.net
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Year: Other/Not Listed
Make: Yamaha
Model: Other/Not Listed
Misc: SX195
Just wanted to give a quick review on the CJS viper series Jeff installed for me last week. I have a...Jason V
Jsvny79@gmail.com
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I tried your steering kit on my quick-handling XP. I am amazed that something that looks small and inconsequential can make such a difference. This ski can be punishing in chop and at high speed becau...
Bill Baker
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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
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