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40 Series Torque Converter Kit - Bolt On, 8HP - 18HP- COMET

$475.00 $469.95
(You save $5.05)

Product Description

As Seen On Cars & Cameras YouTube Channel!



EXPENSIVE PRICE.  Aftermarket 40 series will be available end of October for $369.95.



The Ultimate Bolt On Torque Converter Kit for 8-18 hp engines. Same concept as the Comet TAV2 kits used on the smaller engines.

Bring your machine to life with this TAV setup uses aftermarket driver and driven pulleys.

Uses replacement belt #203784

Kit Includes:

  • 1- 40 series driver for 1" crankshaft or 1- Magnam 44c series driver for 3/4" crankshaft
  • 1- 40 series driven pulley 
  • 1- 40 series 7/8" wide drive belt
  • 1- 10T Sprocket for 40/41/420 chain
  • 1- jackshaft assembly
  • 1- 3/8" heavy duty steel backplate with all mounting hardware

Optional Magnum 44C Driver with 3/4" bore

      .  Used on performance engines with 3/4" crankshaft, rated up to 18hp

 Everything included in kit as shown, currently no outer cover available.

 Backplate now has tabs for future use and is not sold separately.

Product Reviews

Write Review

  1. Awesome

    Posted by Unknown on 17th Aug 2017

    Little pricy but torquey as all get out

  2. Pictures don't do justice.

    Posted by Bradchaney on 12th Aug 2017

    Looks pricey at first,The picture on the internet catalog doesn't do this 40 series torque converter kit justice, just wait till you see one in person,this thing is really beefy and heavy duty, it will handle any thing my 420 predator can throw at it.

  3. Easy to install

    Posted by Taylor Jacobs on 14th Jul 2017

    Good product. Easy to install.

  4. Best Convertor Kit

    Posted by Mc Arthur Phillips on 5th Jul 2017

    I think this is a very high quality kit. Seems to be very strong so there will not failure.

  5. Wow, talk about awesome..

    Posted by Sam from Utah on 16th May 2017

    Upgrading the Manco Go Kart with a GX390 and needed something that was all in one without needing to figure out the Jackshaft for the 40 series with the limited space (this is the only true 40 series kit I found with a back plate). Right out of the box you can tell that the part is high quality and added bonus, comes with everything you need to mount it on your engine. The freak' in thing feels bullet proof and I have no worries of torque flexing. I also love how fast this thing shipped out to me. I got a FedEx shipment notice within 20 minutes after I submitted my order. Great place, plan on using them again for future builds.

  6. This works awesome on 16hp gokart.

    Posted by craig k on 15th May 2017

    This is just what I needed for my 2 seater 16hp gokart. I but several "heavy duty clutches on and burn them right up. Found the series 40 and it bolted right up. It is amazing! There is no lag at all. Im able to go about 45mph with a 32t sprocket. Can't say enough good about it. You get what you pay for. It's heavy duty for reals!

  7. Stout

    Posted by Jason Evans on 12th May 2017

    I bought this 40 series bolt on kit to pair with a predator 420 big block, engine swap. This thing is over engineered built from 1/4" steel, there is no chance of backing plate flex.

  8. great product

    Posted by Eric on 25th Apr 2017

    Works outstanding on a repowered JD gator

  9. Torque Converter assembly

    Posted by Doug on 5th Apr 2017

    This is just the ticket. Makes adding a tourque converter system to your machine a no brainer

  10. 40 series torque converter set up

    Posted by Unknown on 13th Mar 2017

    Just watch the video of installation. Had no problems installing. Easy bolt on application.

  11. Great Kit

    Posted by Glenn M Wright on 21st Dec 2016

    This 40 Series combo kit cannot be beat nice and very heavy duty for many kart swaps for my engine will work and fits cant belive how heavy the clutch is wow my buggy will be assemble in the spring thankyou.

  12. best one yet 40 Series Torque Converter Kit

    Posted by scott on 16th Dec 2016

    Just bolt on and go. put it on a carter mini monster truck with 22/11/8 tires a 13 HP Honda having a blast with it in the snow and mud ye ha a little high on the price but you get what you pay for
    good job go power sports !!

  13. 40 Series Torque Converter Kit

    Posted by Doug Eaton on 8th Dec 2016

    What an awesome product!!! POWER TO SPARE!! I emailed them before making my purchase, super fast & very informative response!!! Kudos at it's finest!!! Many thanks & looking forward to doing business with y'all again!!! Doug Eaton... Scratchbuilder extrordinaire!!!

  14. AWESOME!!!

    Posted by Joe on 21st Sep 2016

    Had an ebay kit on my custom 16hp offroad go kart and it didn't last. This set up is badass! Beefy and can take the power and abuse!

  15. GREAT!

    Posted by Rickie Wardlaw on 16th Aug 2016

    Purchased one of there for my DuroMax 16 hp go kart and it worked wonders , very highly recommend .

  16. Great torque converter

    Posted by Gene on 4th Jul 2016

    This is one heavy duty torque converter. Just bolt on and go.

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Return Guidelines
No returns on electrical items.

  1. Click Here to request an RMA from your Completed Orders section in the My Account section.
  2. The item(s) must be returned within 30 days of the order date.
  3. Include the original receipt or a copy of receipt with the returned merchandise.
  4. The item(s) must be returned without being used or damaged in any way.
  5. Send the return items PREPAID to our warehouse at:
Returns Department

1375 S. Main St.
Keller, TX 76248

Product Videos

Upgrading to a 40 Series Torque Converter on a Manco Dingo Go-kart 20:40

How to upgrade your go kart engine to use a 40 Series Torque converter. Exclusively made by Order online at

  • Upgrading to a...
    How to upgrade your go kart engine to use a 40 Series Torque c...

icorating5.png Awesomeness
Posted by James Gagnon on 12th Jul 2016
Switched from a centrifical clutch to this torque converter clutch. What a phenomenal difference off the line. Seriously, the difference in acceleration from a centrifical clutch was like adding a turbo (interesting concept to consider) to the kart.

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