USP Marine Tuning Ultimate Performance Kit for Mercury Verado 135-300 Engines
SKU: 69604130763

USP Marine Tuning Ultimate Performance Kit for Mercury Verado 135-300 Engines

Sale price$466.18 Regular price$517.98
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

USP Marine Tuning Ultimate Performance Kit for Mercury Verado 135-300 EnginesQuestions what the kit does? Watch this explainer video first. How to install cowling. How to install boost pipe kit. *****Please note**** The cowling comes painted primer color and must be painted your color of choice before installation. DO NOT BAKE TO DRY IT WILL WARP THE COWLING. The ultimate performance package for your Mercury Verado 135 300 Verado engines. If you are serious about consistent performance, this is the kit for you. Tackle common

Questions what the kit does? Watch this explainer video first. 

How to install cowling.

How to install boost pipe kit.

*****Please note**** The cowling comes painted primer color and must be painted your color of choice before installation. DO NOT BAKE TO DRY IT WILL WARP THE COWLING.

The ultimate performance package for your Mercury Verado 135-300 Verado engines. If you are serious about consistent performance, this is the kit for you. Tackle common boost leak issues, provide clean air to your induction/supercharged engine system, and add refined performance sound with the USP Marine Tuning Essential Performance Kit for 135-300 Verado Engines. Bundled with our most popular products: USP Marine Tuning Boost Pipe, USP Marine Tuning High Flow Fuel Filter, and USP Marine Tuning Intake Pipe -- Save up to 15% when buying this kit compared to buying parts individually.

Kit includes: 

(1) USP Marine Tuning MAX+ Performance Top Cowling For Verado L6 Engines

This replaces factory part # 885354T01. The USP Marine MAX+ Performance Top Cowling sets the bar for Verado engine styling + performance. Manufactured in the USA, we utilize motorsports-inspired injection molding to create a durable, yet light material for your outboard engine. We scanned the Verado engine cowling to provide laser accurate fitment. Manufactured using extremely strong material known for its light-weight, superior durability, and impact resistance - making it perfect to withstand the hazards of daily boating + fishing.


(1) USP Marine Tuning High-Flow Air Intake Pipe For Verado 135-300

Replaces factory part #: 892383001. USP Marine is pleased to present our motorsports-inspired new USP Marine High Flow Air Intake Pipe for the 135-300 I4/L6 Verado engines. Following similar design elements as our 350-400 intake pipe, we added an additional CNC coupler on the filter side to provide venturi-like flow for the intake tract. The USP Marine High Flow Intake Pipe provides a significant flow increase (even more than the 350/400!) while refining the performance supercharged sound we all love! The system includes a variety of changes over the factory system for maximum performance, longevity, and peace of mind combating the evil “boost leak”. Compatible with the factory piping, we utilize CNC adapters to minimize air disruption during the hose connection surface. The factory plastic resonator piping sports a restrictive design, which also is prone to cracking over time. Our intake pipe replaces the OEM piping with 4-ply wire reinforced silicone piping, as used in our 1000HP turbo kits for USP Motorsports. All clamps are spec 316 Stainless, the marine standard for corrosion resistance. The silicone piping not only holds up better, but our design provides +30% CFM over the factory. The flow difference provides an increased throttle response and improves intake air temperature during WOT throttle applications.
 
The USP Marine High Flow Air Intake Pipe for Verado Engines pairs well with our USP Marine Cowling High-Performance Air Dam for Verado Engines. These additions to your outboard provide a refined performance sound that many love on + off the water. Though the Mercury Verado is the quietest outboard on the market, they also are the most powerful. Boat owners nowadays are looking for that “sporty” addition to their outboard engines.
 
(1) USP Marine Tuning Boost Pipe Kit For Verado 135-300
 

Replaces factory part #'s (893307A01, 893307A01, 896259, 896271, 887938003). The factory boost pipe is constructed of plastic and is extremely narrow resulting in an airflow restriction. Being that the 135-300HP engines do not have water-cooled superchargers, the fitment is different compared to our 350-400 Boost Pipe Kit. The USP Marine pipe is constructed out of mandrel bent 2.5" aluminum tubing with 4 ply stepped silicone couplers. We also included the damage-prone factory replacement coupler, connecting the boost valve to the intake manifold. We have seen countless factory couplers damaged and causing pesky boost leaks that are very hard to diagnose. By utilizing the boost pipe kit and included coupler, the kit will allow for maximum airflow and that extra insurance policy knowing you will never have a leak. The piping is powder coated with a wrinkle black durable finish for an OEM+ look.

(1) USP Marine Tuning Billet Aluminum High-Flow Fuel Filter Kit For Verado Engines

Replaces factory part # Quicksilver 879885Q. A proper fuel filter is an important part of any fuel system. They are in place to provide a barrier for potential debris and contaminants before they reach the injectors. After carrying boxes of the plastic OEM in-line filters (Quicksilver 879885Q) for trips offshore, we decided to make a change. Made from billet aluminum, the USP Marine Billet In-Line High Flow Fuel Filters are built to withstand the harsh marine environment. Crafted with the same engineering we use in the car world, the filters also provide optimum flow for performance applications.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 69604130763

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Ms. Mac
Pawtucket, US
★★★★★ 5
Just as good as paraffin wax
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I might prefer these socks over paraffin wax. They are comfy and very moisturizing. I use these socks once a week to keep the heels and soles of my feet moisturized between pedicures. I rinse with warm, soapy water then hang to dry. They are hard to walk in, but there's a saying printed in the socks that's says something to the effect of "take a break, stay off your feet" lol I love that as a reminder to put my feet up and relax
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Reviewed in the United States on April 9, 2026
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SKI
Lowell, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
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Reviewed in the United States on April 25, 2026
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Ryan or Rachel Torkelson
Louisville, US
★★★★★ 5
So excited for results, feels like it’s working!
Size: Medium, Unit Count: 4
First time trying them right now as delivered today. Originally thought was supposed to wear all night but glad to find out 30 minutes just because my dog sleeps on my feet over my sheets! These silicone socks feel great and I trim my toe nails short enough they seem very durable and unlikely to rip like the pic review shows. I am confident my feet and heels will much smoother after first time wearing! I do have acrylic nails so I will be careful Putting the silicone socks on and off. Just as easy as the video the spread the lotion inside the socks and rub it around, mess free!!
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Reviewed in the United States on January 18, 2026
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Joey B
Pawtucket, US
★★★★★ 5
Actually, better than I expected!
Size: Medium, Unit Count: 4
These are better than what I was expecting based on the reviews. I do put them on carefully because someone said you can’t tear them so I’m careful putting them on, but they almost don’t feel like you’re wearing anything as long as you don’t put them too tight on your toes. I can put lotion on my feet and I know it has to soak in because there’s no place else for it to go like socks or my bed.
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Reviewed in the United States on April 20, 2026
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Carmen Pinto
Natrona Heights, US
★★★★★ 5
Moisturing
Size: Medium, Unit Count: 4
The silicone socks are nice, they help my dry heels. I will warn you don't walk with them I got up in the middle of the night and tore one pair.
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Reviewed in the United States on April 3, 2026

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