Hayden Primary Chain Tensioner - BIG Twins — Harley-Davidson Super Glide, Tour Glide Classic, Electra Glide Classic (1974-1993)

Hayden primary chain tensioner for V-twin big twins, automatically maintains proper chain tension during acceleration and deceleration to eliminate slack and reduce drivetrain noise. Smoother shifting and a noticeably quieter transmission are the immediate benefits.

Features

• Automatically adjusts primary chain tension
• Reduces transmission clunk during shifts
• Smoother acceleration and deceleration
• Quieter drivetrain operation

Specifications

• Brand: Hayden
• Manufacturer Part #: M6-BT65
• Length: 4.45 in
• Width: 7 in
• Height: 2.25 in
• Weight: 2.1959 lbs

Fitment

Fits V-twin big twin motorcycles including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

Will this eliminate all transmission noise?

It reduces clunk and clicking by maintaining consistent chain tension. Some noise is normal in V-twin primaries — this minimizes slack-related sounds.

Do I need any special tools to install this?

Installation requires basic hand tools and access to the primary cover. Consult your service manual for your specific model's procedure.

Will this work on my Sportster?

This part is engineered for big twin models. Sportster primary designs are different — verify fitment before ordering.

How long does a tensioner typically last?

Hayden tensioners are built to last the life of your bike with proper maintenance. Replace if it no longer maintains tension or shows fluid leakage.