O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit

O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit 5 5 13
SKU: ONL4194
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Availability: Out of stock

Regular Price: $449.95



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Cleanline Staff Member Paavo Cleanline Staff

Paavo Says:

"Get these while they last! These are now discontinued and at this price they won't be here for long. The Pyrotech is the best coldwater suit O'Neill has ever made, and in my opinion it's the best suit we carry. Techno Butter has a funny name but it really is the best rubber available, excellent stretch, and doesn't absorb much water (light in the water/drys fast after). Also the F.U.S.E. entry is easier to get into than most chest zips. Overall it's a warm, performance wetsuit that's built to last. It's really hard to improve on what they've done, and we rarely if ever see this suit come back with warranty issues."


O'Neill's Pyrotech Wetsuit Series Combines their exclusive Technobutter-Air Firewall insulation, Single Fluid Seam Welds and F.U.Z.E Closure System. Lighter, warmer, more insulating and quick drying with improved ease of entry, the Pyrotech is the latest advancement in cold water wetsuit technology from the leaders in innovation for over 60 years.


Thickness: 5.5/4mm

Neoprene: Technobutter and Technobutter Air Firewall Neoprene

Seams: Single Fluid Seam Weld

Zipper: Chest Zip

Hood: Attached

Model Year: 2014/2015

Manufactures Part Number: 4194


Product Features

  • Attached Hood
  • F.U.Z.E Front Upper Zip Entry with Code Red Zipper and Drain Holes
  • Single Fluid Seam Weld(Watertight Stitchless Technology) - Keeps water from entering at all seams and critical points.
  • Technobutter & Technobutter-Air Firewall Neoprene - The most advanced super stretch neoprene available on the market. 20% lighter, 30% less water absorption with quick dry properties.
  • Super Seal Cuffs - O'Neill's new Super Seal Cuff is fused to create a very low profile at the cuff ending creating the best seal ever.
  • Krypto Knee Padz
  • External Key Pocket with Loop
  • Plasma Wrist and Ankle Seals
  • LSD - Lumbar Seamless Design


O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Perfect FitReview by Paul Paul
Very happy with this O'Neil product. And happy with the service in getting the right fit from Cleanline.

I'm 6'3" and 178 lbs. and the medium tall was nice and snug. Arm and leg length perfect.
(Posted on 8/5/2015) 2015-08-05
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Warm and flexibleReview by Snotcicle Snotcicle
I'm comparing this to two other wetsuits in the last five years: a Billabong Foil and a Ripcurl wool-lined Flashbomb. Flexibility is better than the budget model Billabong and approximately equal or slightly better than the Ripcurl. I can take it off easier than the Ripcurl and paddling is much easier than in the Billabong. This is remarkable as the Oneil is 10% thicker than the other two. The Pyrotech is 'fairly' easy to step into when wet also the wrists and ankles are very secure. I would experience shrink and creeping up my arms and legs in the Billabong and to a lesser degree with the Ripcurl. This is sometimes a problem when in the ocean of Oregon's north coast. The hood fits nicely and is somewhat adjustable on your chin, also easily inverted for warmer weather. I'm happy with my purchase and pleased with the great service at Cleanline. I can talk with the owner or any of the employees and know that my needs will be taken care of. All questions will be answered and I can purchase with confidence. I'm not sure about complaints because I've never had one. Thanks
(Posted on 5/5/2015) 2015-05-05
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Northwest Rider ApprovedReview by Tillamook Jake Tillamook Jake
This is a pro level hooded wetsuit. The neoprene is super stretchy which I found saves a lot of effort during paddling. My arms stay fresh way longer and that extra energy helps claw into bigger and faster breaking waves.

The fit and sealing is remarkable. It's a neck entry suit with a chest zip, which takes about 10 seconds longer to get in/out than a full chest entry suit, but the trade off is worth it. I can get blown up destroyed on a closeout set and there is barely any flushing.

Also, I noticed when the suit is inside out and drying, the material dries out super fast. Good for double sessions!
(Posted on 4/24/2015) 2015-04-24
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Awesome .............Review by Goofy Footer Goofy Footer
The Pyrotech 5.5-4 is just awesome, the flex of the Technobutter makes this suit easy to get on & off, the Technobutter is so light weight it feels like a much lighter suit too. After few hours in 39 degree water yesterday enjoying the session when others not wearing this suit ended their session feeling the chill. If you have broad shoulders the O'Neill chest zip is wider than other Brands to pull your arms through and zipper locks up tight too.

I've ordered 2 O'Neill "Technobutter" suits from Cleanline this year, super friendly service and receiving a free T shirt and wax with the order a nice touch you don't get from other wet suit on line sales.
(Posted on 3/31/2015) 2015-03-31
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Go For ItReview by Allan M. Tepper Allan M. Tepper
I have been surfing in New Jersey since 1968, and I started to surf year-round in 2003. I am a longtime O'Neill customer, and I have treated myself to a number of different/upgraded hooded O'Neill Winter suits (via Cleanline) in the past 12 years.

My go-to Winter suit has been a 5.5/4 hooded o'Neill Psychofreak that was discontinued about two years ago. I have been watching the reviews on this hooded Pyrotech, so I ordered one during the Cleanline October sale.

The water is starting to drop down in New Jersey, and, so far, so good. I concur with all of the comments offered by Matt and the other reviewers, including the amount of flex of the Technobutter. In addition, I find the hood and neck area of this suit much less constraining than previous O'Neill models.

I have worn the suit with the water in the lower 40's and no wind. On those days, the comfort and warmth has been great. I am interested to see what the warmth will be when the water drops to the mid-30's and the wind is blowing. But, even if I have to
put on the older hooded Psychofreak for a few sessions, I am a Pyrotech fan. In fact, I just treated myself to a 3/2 and a 4/3 Pyrotech to replace my Psycho III's and get rid of the back zip.

So, you only live once. Order one of these suits. You won't regret it.
(Posted on 1/5/2015) 2015-01-05
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit O'Neill Pyrotech is an Excellent WetsuitReview by Dave Balzer Dave Balzer
I actually purchased this wetsuit back in September but have waited to post a review due to the unseasonably warm fall weather we had until late November. Now that I have had a chance to wear this wetsuit in conditions from 65 degrees to 28 degrees I can absolutely say this is an excellent suit. On the colder days that I have been out this suit has kept me very warm while wearing boots and gloves. On the warmer days I have actually been surfing without gloves and leaving the hood down. For the thickness of the suit it has a lot of stretch and the seams and material have shown no wear after multiple sessions over the past three months. For the price O'Neill definitely delivers in the quality of material, seam construction and excellent fit. I am 5'11", 170lbs. and the medium fits me perfectly. This is not a wetsuit with a few bells and whistles thrown in to jack up the price but a superior wetsuit well worth the investment and well designed for the Pacific Northwest.
(Posted on 12/24/2014) 2014-12-24
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit PyrotechReview by Eric Huntsman Eric Huntsman
One of the best suits I've worn in the last 10 years. Warm, flexible, they have beefed up the zipper to more of a heavier and stronger plastic, should last a lot longer without breaking. In short well worth the money if you are a cold water surfer. You get what you pay for!!!
(Posted on 12/20/2014) 2014-12-20
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit When it comes to a hooded 5/4 look no further.Review by Spencer Spencer
I'll try not to piggyback too much off what everyone else said, but this suit is by far the best investment I have made with regards to surfing. If you're going to be surfing in water 40-50 degrees this suit will exceed any expectation you have. I was hesitant to purchase this suit at first because 5.5mm is thicker than what I am used to. I am not one to sacrifice flexibility for warmth, however the technobutter neoprene gives this suit the flexibility of a 4/3 while seeming just as light. The built in zipper is super sturdy and eliminates the hassle of trying to get in and out of your suit with frozen hands. O'Neill nailed it with this suit and I am seriously thinking of picking up the 4/3 model for warmer days. Well played!
(Posted on 10/1/2014) 2014-10-01
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Worth the price of admissionReview by S. Powell S. Powell
I wanted to wait a few months before leaving this review because my initial thought was "This is to good to be true... It's got to have a flaw." With that said, I get cold very easy and I get to surf on the weekends and further more, when the weather allows for it here in Oregon. When it actually gets good here and I have a day to surf, the last thing I want is to have to paddle in because I've gotten cold. I've had this suit now for 6 months and it is holding up the way I would expect a $400+ suit to. I've used it in snowing conditions and 46F Degree water and I was comfortable for a 6 hour session. I've also worn it in warmer temps down south and it seems to regulate fairly well. It drys super fast, only complaint (and this is nit-picky) is that taking it off is difficult without a friend to help. Seriously considering buy a 4/3 for summer so I don't wear this one out to fast. Best suit ever built.
(Posted on 5/9/2014) 2014-05-09
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Crazy WarmthReview by Unknown Unknown
I tried out my Pyrotech for the first time this weekend in 40(F) degree waters in New Jersey. Outside temp was around 55(F)...Not only did the wetsuit keep me warm, but I had to take my hood down and dunk my head on a number of occasions b/c I was ACTUALLY HOT!! Amazing how the technobutter technology works.

(Posted on 4/14/2014) 2014-04-14
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit So awesome I went back for a 2nd suitReview by Jason Frink Wind/Wave Enthusiast Jason Frink Wind/Wave Enthusiast
Everything everyone else said and...
My last 2 suits were the Psycho 2 and F-Bomb. Great suits but this Pyrotech sets a new standard in comfort, flexibility, water tightness, warmth. I keep 2 suits for the Oregon coast and alternate...I was thinking I would hang on to one of my old suits for those 2 session days, but after 1 chilly session back in the F-Bomb, I was like no way and went and bought another Pyrotech.
(Posted on 12/9/2013) 2013-12-09
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit O'Neill PyrotechReview by Josh Gizdavich, Owner of Cleanline Surf Josh Gizdavich, Owner of Cleanline Surf
So I've worn pretty much all of the major supplier's wetsuits available and obviously everyone has their own opinions, likes, and dislikes. These are strictly my opinions so of course take all I say with a grain of salt. I've been wearing wetsuits for about 45 years now in the cold waters of the northwest ( northern Oregon where the Columbia river meets the Pacific Ocean). I've been wearing Patagonia wetsuits for the last three years and Ripcurl for three or four years previous. Before that was O'Neill and for many years Hotline was the choice for me.I only have allegiance to the best. I wear what I think is the best because my wetsuit is my most important tool. All this said I recently grabbed an O'Neill Pyrotech off the rack because I kept hearing and listening to all the hype on the phone and in the shop. Paavo, my manager (awesome surfer, incredible guy)keeps telling me (and customers) what a killer wetsuit this is, and I really respect his opinion. Definitely O'Neill's flagship and best wetsuit ever! Wow big statement! So here is what I found, great, super soft, flexible and just buttery (Techno rubber) Neoprene. In the water the suit is unbelievably water tight. I couldn't believe how dry I stayed for a 2 and a half hour sesh. Also it's really REALLY warm. While sitting on my board between sets I could feel the sun baking the firewall interior lining like it was an electric vest! This is one GREAT wetsuit!
(Posted on 11/27/2013) 2013-11-27
O'Neill Pyrotech 5.5/4 Hooded Chest Zip Wetsuit Technobutter is Actually Amazing StuffReview by Matt - Cleanline Surf Staff Matt - Cleanline Surf Staff
Yep. I have to say that Technobutter Neoprene is the by far the best thing I have seen from the wetsuit industry this year. I'm waiting for this suit(or the Psycho 3) to win wetsuit of the year. It's funny because I haven't heard a lot of hype behind it, but it's awesome. For the past few weeks I have been wearing the Fall 2013 Pyrotech 5.5/4 Hooded Wetsuit, and it honestly is so lightweight and flexible it feels like a 4/3. Being a tall and lean guy(5'11" 157lbs) I fit the O'Neill suits perfect. I'm wearing a size small because this thing is that flexible. It pretty much feels like a second skin, and is extremely comfortable.

As far as warmth goes, it's a 5.5/4mm suit so you're covered into the upper 40's no problem as long as you have some solid boots and gloves to go along with it. It also has a smooth skin chest and back panel that helps break the wind, and trap in heat.

The construction overall is very solid in this suit. It is a high end O'Neill wetsuit, and all the suits I have owned from them in the past have held up great. Durability on this suit with the new Technobutter neoprene is yet to be seen I suppose, however I previously owned the RG8, which was the model before the Pyrotech and after a year and a half the seams are all doing great and the suit is still pretty warm. Only the knee has worn through slightly from duck diving(which you shouldn't do with your knee anyways).

All in all this is my favorite suit of all time. It may not be quite the warmest suit out there due to it's lack of fleece lining, but the thickness does a good job of making up for that. As far as flexibility I don't know a better suit that is equal in warmth. Coming form someone who has worn a lot of wetsuits from all the major brands I hope this endorsement carries some weight. The Fall 2013 Pyrotech is well worth it.
(Posted on 10/31/2013) 2013-10-31

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Size Chart

The staff at Cleanline Surf specialize in sizing O'Neill Wetsuits. If you have never tried an O'Neill suit before, we strongly urge you to call us for expert advice on sizing. We do have a size chart available below, but please take it with a grain of salt. For the perfect fit the first time please call and speak with one of our wetsuit experts.

2XS5′6″-5′8″115-130 lbs32.5-34.5″27-29″
XS5′7″-5′9″125-140 lbs34.5-36.5″28-30″
S5′8″-5′10″135-155 lbs36.5-38.5″29-31″
ST6′0″-6′2″145-165 lbs36.5-38.5″29-31″
M5′9″-5′11″150-170 lbs38.5-40.5″30.5-32.5″
MS5′6.5″-5′8.5″140-160 lbs38.5-40.5″30.5-32.5″
MT6′1″-6′3″160-180 lbs38.5-40.5″30.5-32.5″
L5′10″-6′0″170-190 lbs40.5-42.5″32.5-34.5″
LS5′7.5″-5′9.5″160-180 lbs40.5-42.5″32.5-34.5″
LT6′2″-6′4″180-200 lbs40.5-42.5″32.5-34.5″
XL5′11′-6′1″190-210 lbs42.5-44.5″34.5-36.5″
XLS5′8.5″-5′10.5″180-200 lbs42.5-44.5″34.5-36.5″
XLT6′3″-6′5″200-220 lbs42.5-44.5″34.5-36.5″
2XL6′0″-6′2″210-230 lbs44.5-46.5″36.5-38.5″
3XL6′0″-6′2″230-250 lbs47.5-49.5″38.5-43.5″

Full O’Neill Wetsuit Sizing Chart



If the product is found to be defective under normal use and proper care, O'Neill will repair or replace the product at our sole discretion. The decision to replace or repair a product is made by the O'Neill Warranty Department after receipt of the defective product. At no time does the O'Neill offer refunds. Defective product should be returned clean and dry, postage prepaid. Please include a note with product description, product defects, requested action, return address (be sure to include postal code, especially for Canadian addresses), daytime phone number with area code, customers name and a copy of the purchase receipt sent to the address below.

Suits without a copy of the purchase receipt will NOT BE COVERED UNDER WARRANTY.


  • Products classified as seconds
  • Fading from sunlight
  • Alterations
  • Materials over 1 year (from date of original purchase), or 90 days for accessories
  • Repairs or alterations done by anyone other than O'Neill or an O'Neill authorized repair facility
  • Warranty request without original receipt


Flat-Stitched Products, Glued and Blindstitched Products, and Fluid Seam Weld Products

  • Limited 1-year warranty (from date of original purchase) on workmanship and materials.

Neoprene Dry Suits

  • Limited 1-year warranty (from date of original purchase) on workman ship and materials (waterproof zipper excluded)


  • Limited 90-day (from date of original purchase) warranty on workmanship and materials


For repairs received from the dealer or end user, O'Neill offers:

  • 10 Business Day Turnaround for warranty Stitched Suits
  • 10 Business Day Turnaround for warranty Glued Suits
  • 20 Business Day Turnaround for warranty Fluid Seam Welded Suits
  • 30 Business Day Turnaround for all Non-Warranty Repairs

Repairs are to be returned clean and dry, postage paid. Please include the name and a daytime phone number with area code, return address, product description, and requested action.

Send Repairs To:

O'Neill U.S. Warranty Repair
1022 Bay Marina Drive, Suite 140B
National City, CA 91950
Tel: 1-800-331-1637


Returns are easy! We understand that in some situations returns or exchanges may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, or exchange within 30 days of receiving your order. Items must be in new condition with original tags and packaging.

Click here for our full Return Policy