Harddrive Manual Primary Chain Adjuster - Prmry Chain ADJ FX 2006-2016 FL/FLT 2… — Harley-Davidson (2006-2016)

Harddrive manual primary chain adjuster for V-twin motorcycles, replacing the factory automatic adjuster with user-controlled tension management. Billet aluminum construction allows fine-tuning to eliminate over-tightening issues that wear bearings and seals prematurely.

Features

• Manual primary chain tension adjustment replaces automatic adjuster
• Anodized billet aluminum construction
• Lockable tension setting prevents chain free play during aggressive shifting
• Reduces bearing and seal wear from over-tightened chains
• Direct bolt-on replacement for OEM automatic adjuster

Specifications

• Brand: Harddrive
• Manufacturer Part #: 25-064
• UPC: 191361167348
• Material: Billet aluminum, anodized
• Length: 11.53 in
• Width: 4.72 in
• Height: 1.77 in
• Weight: 0.8818 lbs
• Country of Origin: China (Taiwan)

Fitment

Fits 2006-2016 Harley-Davidson Touring (FLT) and 2007-2016 Harley-Davidson Touring (FLT) models with manual primary chain adjustment compatibility.

Frequently Asked Questions

Why replace the automatic primary chain adjuster?

Automatic adjusters often over-tighten the chain, increasing wear on bearings and seals. Manual adjustment lets you dial in the correct tension and lock it in place.

Is this a direct bolt-on replacement?

Yes — it bolts directly in place of the factory automatic adjuster with no modifications needed.

How do I set the chain tension correctly?

Adjust the chain to factory spec (usually 0.5-1 inch of play at the midpoint). Lock the tension wheel in place once dialed in.

Will this affect my primary cover?

No — the manual adjuster uses the same mounting points and fits under the stock primary cover.

What motorcycles does this fit?

2006-2016 Harley-Davidson Touring (FLT) models. Verify your model year and Touring designation before ordering.