Medium Swamp Runner™ Kit (8-14hp)

SKU: 30kt00m Category:

Product Description

Our Medium Swamp Runner™ Kit includes every part needed to build a longtail motor except for the engine.

Each kit includes:

  • Coupler Assembly
  • Tethered Kill Switch Assembly
  • Tiller Handle
  • Duckbill Throttle Assembly & Grip
  • 85″ Shaft Assembly or 100″ Shaft Assembly
  • Engine Base Mounting Bracket
  • Transom Bracket
  • All hardware required for assembly.
  • Comes standard with (2) Aluminum Surface Piercing Propellers
  • Owner’s Manual for assembly instructions and other information

Customer Performance Stats

Our Medium Swamp Runner™ kit will fit a variety of engines between 8 & 14hp.  So many in fact, there are simply too many engine makes and models to list all engines that will fit.  The following is a short list of just a few of the engines that will fit this kit:

Briggs - Vanguard8hp (305cc)
13hp (408cc)
16hp (479cc)
There are simple too many Briggs / Vanguard engines made over the years to list.
Measure your engine using the Engine Requirements listed below this table.
Carroll Stream Engines11hp (337cc)
13hp (389cc)
16hp (420cc)
Harbor Freight: Predator Engines8hp (301cc)
11hp (346cc)
13hp (420cc)
62553, 62554
60340, 60349, 69736
Home Depot: Lifan Engines13hp (389cc)
15hp (420cc)
Honda8hp GX240 (240cc)Numerous engines with a "Q" Type shaft
Identified by a "Q" in the last 4 digits of the model number
A few examples:
Honda9hp GX270 (270cc)GX270UT2QA2, GX270UTQAE2, GX270UTQXC9
Honda11hp GX340 (340cc)GX340UT2QA2, GX340UT2QNE2
Honda13hp GX390 (390cc)GX390UT2QAA2, GX390UT1QNE2, GX390UT2QXC9
Duromax ?hp (420cc)
?hp (440cc)
While they will fit our kits, we do not recommend Duromax engines.
Too many of our customers have had problems with them.

*The information in this table is provided by as a courtesy service to our customers, and should only be used as a guide to help you choose a kit and match your engine with it. We could not possibly list information that would apply to all engines that are available and will fit our kits.  While every effort has been made to provide useful information, the information may change.  So, it is your responsibility to verify engine specs with the manufacturer of your engine prior to ordering.

Without physically seeing and measuring your engine, we cannot guarantee this kit will fit your application.  If your engine is not listed above, you will need to consult the engine manufacturer, or take some measurements of your engine to ensure it meets the following requirements;

Engine Requirements

  • The engine must have a horizontal output shaft.
  • The output shaft must be 1 inch (25.4mm) diameter (non-tapered) with keyway.
  • The engine side cover bolt circle diameter must be: 5 inches (127mm).
  • Engine base bolt pattern must be: 7 11/16” X 3 ¾” (195.26mm X 95.25mm)

*Make certain you check the manufacturer’s specifications for your intended engine to ensure proper fit. The shaft size, engine base, and bolt circle patterns must match. The cost of return shipping is the responsibility of the buyer. We do our very best to provide a detailed and accurate description of our products. If you have any questions, please do not hesitate to call and ask before purchasing.

NOTE: The Carroll Stream 9hp engine, all engines with tapered or threaded PTO shafts & engines with gear reduction box options are not compatible with this kit.

 Swamp Runner®
by SPS
Beaver Dam
Heavy-duty steel Coupler Housing is zinc plated, then powder coated for superior corrosion protection.
Cast Aluminum
Coupler Housings, Coupler Shafts, and Coupler Sleeve Joints so tough they come with a LIFETIME WARRANTY against cracking or breaking to the original owner.yesnono
Coupler shafts of Small, Medium & Large Kits ride smoothly on high quality Japanese radial bearings. yesnono
Offers longtail shafts featuring premium Bayou Bushings, a low friction proprietary bushing developed by Swamp Runner, and capable of withstanding extreme high temps without melting. Over 1000 hrs in a test tank with negligible wear. This bushing just doesn’t care what you throw at it.yesnono
Longer tiller handle designed to operate while standing up or sitting down, with position holes drilled in the handle, and locking bolts that prevent the handle from twisting in the mounting rings. yesnono
Squeeze type throttle lever that has the full throttle travel of your engine.yesnono
Stainless throttle cable that resists corrosion.yesnono
High quality sealed Japanese bearings in the gimbal mount for smooth, fluent handling of the longtail mud motor.yesnono
Gobs of shaft options to choose from: 5 different longtail shafts lengths varying from a 75" to 120" in length, Along with 4 different shaft options; Standard, Extreme Duty, Saltwater Extreme Duty, and Racing shafts.yesnono
Loads more propeller options than any other mud motor company. With more than 50 different props available including standard props, weedless props, performance props, stainless props, racing props, and even props that come with a .25" bore so you can tap it yourself!yesnono
The Weedless Skeg on Small, Medium and Large kits has a longer entry angle that repels vegetation and slides over logs easier.yesnono
First & only Thai longtail company to offer a Weed Cutter option that can be bolted directly to the weedless skeg using predrilled mounting holes.yesnono
A full time mud motor company offering knowledgeable support from over two decades of experience with Thai longtails in both Thailand and the USA.
Access to an active forum where customers enjoy learning about their longtail, and interacting with other owners and people who KNOW Thai longtails.
Access to numerous parts you can't get anywhere else.

12 reviews for Medium Swamp Runner™ Kit (8-14hp)

  1. Jason (verified owner)

    Best investment for my company ever!

  2. Ron P (verified owner)

    Hunted early teal with the new motor. We’ve got some pretty high water in the marsh, but that little 13hp motor sure impresses! I couldn’t believe the stuff we went through; saw grass, mud, sand, thick cattails. I had a try pretty hard to get it stuck. With three 180lb guys, and gear we got 14mph outta my light 14′ topper. I was only getting about 16mph with an outboard and the same load, but it wasn’t half as capable. Cant wait for the start of the regular season and Lake O!

  3. Ed (verified owner)

    I just wanted to give you a follow up on the mud motor kit… IT IS AWESOME! It got us where we had to go and we got there with no problem. It normally takes us an hour and a half to walk in but we got there in less than ten minutes with the boat and kit. We also limited out on wood ducks….

  4. Donnie J (verified owner)

    I recently bought one of your Medium Series mud motor kits and it’s awesome! I took it to the Mississippi River for opening day of teal season. I put a 16 hp Duramax engine on the kit and the whole set up on a 16’ 48” flat bottom and ran 10mph in 4 inches of water and mud. I drove a 13 hp (brand name omitted) longtail when I guided in Arkansas and this kit goes through anything it would, plus the fact I could buy 3 of your kits versus 1 (brand omitted). I will take those odds any day.

  5. Darrin (verified owner)

    Assembly was easy, I had one question early on, called and they were extremely helpful, and friendly. Took it out for a test run, ran flawlessly. I did have one small issue on a grease fitting, snapped off when greasing. Easy fix! Would buy 10x over!

  6. Jesse N (verified owner)

    Man I got to tell you, ever since I put this new engine in the river near my house everyone has been crowding around and wanting one. Now I’ve seen four people running this set up around here and that’s awesome. I’ve been running mine hard and it wants more every time. I absolutely love it. Literally I can take $20 and fish all day $10.00 for the truck and $10.00 for the boat. That’s why this kit is so awesome and efficient. You can’t beat that. I hope you all are doing well and staying busy.”

  7. Richard H (verified owner)

    Hello, I just wanted to say that your kit has worked out great for me, I bought the medium kit and coupled it with a 15hp LIFAN motor and it helped me and my brother access new hunting spots, and that led to many great days of hunting last year!! On a 1436 jon w/ 2 guys 2 dozen decoys and a 70lb dog we were able to get around 15-17 mph. Do you know if there is any way I can achieve faster speeds?Anyway thank you for putting out a great product.

  8. Chance G (verified owner)

    I’m a disabled vet and this is my ultimate solution to me getting back on the water where I should be for a realistic figure without complicating things and getting into debt. I am very happy with this kit and your service. Thank you.

  9. Ronnie B (verified owner)

    This kit went together well and preformed great on my 1436 Jon boat.

  10. Justin T (verified owner)

    Hands down the best purchase I’ve made for my 1436 jon boat. Gets me up river faster then my old outboard ever could, and I don’t have to worry about getting out to pull my boat through the shallows. 10/10 would recommend this to anyone wanting to upgrade their motor

  11. Dustin B (verified owner)

    My swamp runner kit surpassed every expectation I had! I thought that for the price I may have to weld in supports or modify it some other way, I was wrong! Extremely high quality and it is easy to tell that this company takes pride in their product, even their bolt heads are custom with SPS. Thanks for making a great product.

  12. Austin F (verified owner)

    I would like to thank yall for all yalls support and kindness on helping me find and order parts for my boat and motor. Yall have the best customer service of anybody I know. Yalls product is in my opinion better then the name brand stuff like *####* and all that. My friend has a 35hp *####* that he spent over $6,000 on and I go everywhere he does, so I will say and admit that I’m a proud owner of a Swamp Runner. I do a lot of catfishing and duck hunting with people who have flat bottoms and they have outboard motors and they love my motor. I would love to sponsor yalls name along with yalls product on my boat and truck. Got any extra stickers?”

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