Hayden 39-1200 Primary Chain Tensioner Big Twins

Didn't notice much shifting difference in my '99 FXDWG 88, and neutral still a challenge to find. Using 20W-50 in the primary. But I like how tight the bike feels when jockying the throttle in traffic and such. The loose feeling of the primary slacking up is gone. This was the second bike I installed a Hayden in. The first was a grand success as of this writing, so I gave it 5 stars.

Awesome Product! I highly recommend this for any Harley without a spring loaded tensioner! I have been using them in my Harley’s since they first came out in the early 90’s Hayden is a great company that stands behind their products! This one was for a friend and he is very happy with it!

Easy to fit, not ridden bike much yet to see how much difference it has made to gear changing.Thanks.

why didn't Harley come up with this. Just plain awesome. 1993 heritage and the tranny feels like new

Only 3 stars cause the clunk hasn't gone away. I will say it is better and I didn't expect it to go away completely but I'm not satisfied with the results. The price is ok but after I night a 30 dollar gasket to install this thing it doesn't feel like a cheap mod anymore. I was really hoping for better results. If it was as good as advertised I was gonna get one for my other bike. I will not be anymore

reduces noise in the primary and after 2500 miles still maintaining correct chain tension

Installed the Hayden M-6 BT-07 chain tensioner on my 07 FLHR and love it. Now going to update the manual tensioner on my 1995 FLHTP. A well designed and thought-out product!

Nice clean easy install