BAKER Drivetrain Launches Precision-Machined, Racetrack-Tested Line of Primary Chain Adjuster Shoes for Harley-Davidson Motorcycles

HASLETT, MI – February 24, 2026 – (Motor Sports NewsWire) – BAKER Drivetrain, the industry leader in American-made motorcycle drivetrain products, today announced the release of its new, high-performance Race Grade Primary Chain Adjuster Shoes for Harley-Davidson motorcycles. These components are engineered specifically for riders who demand maximum engine response from their high-performance Harley-Davidson.

Unlike stock adjuster shoes that are often molded, these new adjuster shoes are precision CNC-machined from billet Nylon 6-6. This superior manufacturing process ensures the shoes are stronger and more durable than OEM factory parts, making them ideal for demanding performance applications where reliability is non-negotiable.

These American-made components offer increased service life with reduced wear and are perfect for high output engines or vehicles that travel a substantial number of miles each year. The design has been rigorously tested and meets the highest standards of V-Twin builders and race tuners.

“From quarter mile passes to long haul touring, we design and develop our products with performance and durability in mind, “said Bert Baker, co-founder of BAKER Drivetrain. “We build parts with a purpose, and these adjuster shoes are the same. We tested them on the track, including on my own race bike, and the results were clear: they’re stronger, they last longer, and they do the job the way they’re supposed to.”

Engineered as a high-strength, low-friction wear surface, these shoes help control chain motion and reduce parasitic power loss, delivering efficient torque transfer from the engine to the transmission. This low-cost upgrade is essential for any rider looking for maximum efficiency and durability for their Harley-Davidson motorcycle.

Fitment Information

The BAKER Drivetrain Race Grade Primary Adjuster Shoes are direct replacements for H-D part numbers 39976-65B (1965–2000 Big Twin models) and 39976-01 (2001–2006 Big Twin models, excluding the 2006 Dyna), these adjuster shoes offer a high-quality solution now that OEM production has ended. MSRP for both part numbers is $45.

About Baker Drivetrain:

BAKER Drivetrain sets the standard for premium drivetrain components designed exclusively for American big-twin motorcycles. All products are engineered, manufactured, and assembled in the United States, using American materials and American labor.

At BAKER Drivetrain, innovation is driven by real-world riding experience and proven engineering methodologies. Each new product is developed through rigorous research, precise testing, and strict quality controls. Our intense attention to detail in design and manufacturing ensures reliability, durability, and peak performance.

BAKER Drivetrain stands behind every product with a guarantee and straightforward technical support, available before and after purchase. This commitment has earned the company its position as the leader in American motorcycle drivetrain engineering. Headquartered in Haslett, Michigan, BAKER Drivetrain products are used and sold around the world.

For more information, visit www.bakerdrivetrain.com

Source: BAKER Drivetrain

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