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Hayden M6 Primary Chain Tensioner

(14 reviews)

Item: 345743-387649

$87.48

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Description Fitment Reviews Q&A

Hayden M6 Primary Chain Tensioner

  • Automatically adjust the tension of the primary chain
  • Provide constant and even tension, which improves gear shifting
  • Reduce shifting noise; makes for a smoother ride
  • Extend primary chain life
  • Made in the USA
Specification Details
Country of Origin USA
Engine Type Twin Cam

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FLHR Road King 2001-2006
  • FLHRCI Road King Classic 2001-2006
  • FLHRI Road King 2001-2006
  • FLHRS Road King Custom 2004-2006
  • FLHRSI Road King Custom 2004-2006
  • FLHT Electra Glide Standard 2001-2006
  • FLHTC Electra Glide Classic 2001-2005
  • FLHTCI Electra Glide Classic 2001-2006
  • FLHTCU Ultra Classic Electra Glide 2001-2006
  • FLHTCUI Ultra Classic Electra Glide 2001-2006
  • FLHTI Electra Glide Standard 2003-2006
  • FLHX Street Glide 2006
  • FLHXI Street Glide 2006
  • FLST Heritage Softail 2006
  • FLSTC Heritage Softail Classic 2001-2006
  • FLSTCI Heritage Softail Classic 2001-2006
  • FLSTF Softail Fat Boy 2001-2006
  • FLSTFI Softail Fat Boy 2001-2006
  • FLSTI Heritage Softail 2006
  • FLSTN Softail Deluxe 2005-2006
  • FLSTNI Softail Deluxe 2005-2006
  • FLSTS Heritage Springer Softail 2001-2003
  • FLSTSC Softail Springer Classic 2005-2006
  • FLSTSCI Softail Springer Classic 2005-2006
  • FLSTSI Heritage Springer Softail 2001-2003
  • FLTR Road Glide 2001-2004
  • FLTRI Road Glide 2001-2006
  • FXD Dyna Super Glide 2001-2005
  • FXDC Dyna Super Glide Custom 2005
  • FXDCI Dyna Super Glide Custom 2005
  • FXDI Dyna Super Glide 2004-2005
  • FXDL Dyna Low Rider 2001-2005
  • FXDLI Dyna Low Rider 2004-2005
  • FXDWG Dyna Wide Glide 2001-2005
  • FXDWGI Dyna Wide Glide 2004-2005
  • FXDX Dyna Super Glide Sport 2001-2005
  • FXDXI Dyna Super Glide Sport 2004-2005
  • FXDXT Dyna Super Glide T-Sport 2001-2003
  • FXST Softail Standard 2001-2006
  • FXSTB Softail Night Train 2001-2006
  • FXSTBI Softail Night Train 2001-2006
  • FXSTD Softail Deuce 2001-2006
  • FXSTDI Softail Deuce 2001-2006
  • FXSTI Softail Standard 2001-2006
  • FXSTS Springer Softail 2001-2006
  • FXSTSI Springer Softail 2001-2006

Customer Reviews

2000 softail

By Frank on  Verified Purchaser

Item fit perfectly on my softail, also already have one on my glide. Will always use them

Simple design

By David G. on  Verified Purchaser

Simple design, haven't tried my bike with it on yet, but it can't over tighten so I should get the response that you should expect.

Good performance - rough appearance

By Jon D. on  Verified Purchaser

I like the Hayden M6 tensioners and run them in several bikes. Very rough low quality machining on the parts but they are still quite functional. I would expect them to do a little nicer job though, even though the functionality of the parts does not require it.

Hayden m6 tensioner

By David P. on  Verified Purchaser

I ordered the Hayden Tensioner because of the quality over the stock one. Works great less chain noise.

USA made and affordable

By Nicholas P. on  Verified Purchaser

I bought a few tensioners that were LOUD and this one I'm telling you nice and quiet. Installed with zero effort. High quality. Don't waste your money on other tensioners like I did this one is great

Tensioner

By Manuel P. on  Verified Purchaser

Easy to install, and the quality is good.

Seems to work

By Christopher W. on  Verified Purchaser

Seems to work...checking would be an oily mess!

Excellent upgrade

By Randy S. on  Verified Purchaser

Excellent product.

Hayden M6 Tensioner

By Mike K. on  Verified Purchaser

Installation went good. Too soon to tell

Great product

By Brent R. on  Verified Purchaser

I run Hayden M6 Tensioners in all my Harleys. Smoother and quieter shifting. Easy to install. Lots of bang for the buck. Great price.

No more primary chain clatter!

By Jeff on  Verified Purchaser

Great product to replace the weak stock part that Harley makes!

Hayden M6

By P. on  Verified Purchaser

I replaced the stock Harley automatic chain tensioner with the Hayden unit on my 2012 Dyna Switchback. The stock unit only has one direction; tighter and tighter. The Hayden mounts on springs so it keeps constant tension on the primary chain. Install was easy and straight forward. I did have to file the metal portion of the unit a little because the nylon shoe was a little tight in spots on its mounting bracket. After filing, the shoe rides up and down smoothly in the mounting bracket. I also felt the price was a bit high for what you get too. But it is a big improvement over the faulty Harley stock unit. And I felt the Harley Screamin' Eagle unit wasn't a much better design. And its reviews said it was loud. The Hayden unit is quiet.

This thing is awesome

By Thomas W. on  Verified Purchaser

Easy to install and noticeable in shifting (much smoother) and getting neutral.

Hayden M6

By Michael M. on  Verified Purchaser

Easy installation. Seems to be working as advertised.

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Questions & Answers

Durability

By Sportsttttter

2003 sportster 1200 Good afternoon. My sportster is a stunt bike. Lots of wheelies and burnouts. Is this a good option or will the stress of all the hard riding be bad for it

These tensioners are rather well-made. Certainly better than stock. Yeah, I'd argue it's up for the kind of abuse you're doing!

By Tom

2019 heritage 114

By Anon.

Will it fit 2019 heritage with a 114

Yes, absolutely! Just select the 2019 Harley Davidson FLHCS Softail Heritage Classic 114 cam chain tensioner from our fit guide and you'll receive the correct components to fit your exact motorcycle.

By Tom

Why 2 springs ?

By Anon.

The smaller spring fits inside the bigger spring. Hayden chose the two-spring design to provide correct, more consistent cam chain tension under all operating conditions.

By Tom

I have a 1995 Harley 883 Hugger Sportster.Which one of the M6 adjusters will work for me ? How much is it ?

By Hal

If you were to choose the 1995 Harley Davidson XLH883HUG Sportster 883 Hugger chain tensioner from our fit guide, you'd receive the correct parts to fit your machine.

By Tom

I have a 88 xlh 1200 sportster. Will this chain tensioner work on my harley

By Anon.

Just be sure to pick the correct year/model when adding to your cart and you'll get the proper tensioner to work for that primary chain.

By Andy

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