Harddrive Premium Primary Chain - 86 Link Endless Oe# 40037-07 — Harley-Davidson Road King, Electra Glide Ultra Classic, Street Glide (2007-2017)

Harddrive premium primary chain for V-twin motorcycles, built with double-row construction and premium-grade materials in an endless design. Made in Japan and distributed by Western Power Sports for Harley-Davidson and Indian Motorcycle applications.

Features

• Double-row chain construction
• Endless design — no master link
• Premium-grade materials
• Made in Japan

Specifications

• Brand: Harddrive
• Manufacturer Part #: 89478
• UPC: 191361228537
• Length: 7.05 in
• Width: 3.5 in
• Height: 1.2 in
• Weight: 4 lbs
• Country of Origin: Japan

Fitment

Fits V-twin motorcycles. Verify OEM part number 40037-07 compatibility with your specific model before ordering.

Frequently Asked Questions

What is an endless chain?

An endless chain has no master link — it is a continuous loop. Installation requires removing the clutch basket or disassembling the primary cover.

Will this fit my Harley or Indian?

This chain is designed for V-twin applications. Confirm the OEM part number 40037-07 matches your bike's primary chain specification.

How do I know if my primary chain needs replacement?

Look for rust, wear, or slack in the chain. If it cannot be tightened within spec, replacement is needed.

Is this OEM or aftermarket?

Harddrive is a quality replacement brand trusted by riders nationwide. This is not a Harley or Indian original equipment part but meets OE specifications.