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Eagle Inner Primary

Eagle Inner Primary

We partnered with our friends at Small Batch Parts in Australia to get their killer cast inner primary stateside—because good parts shouldn't be a world away.

This cast aluminum inner primary is ready to rip. Built to solve the headaches of the old aftermarket tin inners, this unit is stronger, cleaner, and way easier to wrench on.

Designed for all Big Twin Cone engines 1970–1999 running ratchet top and rotary top 4-speed transmissions. Full rundown below.

$435.00 USD
$435.00 USD
Sale Sold out

WHY IT RULES

  • Front-side access to every bolt (because reaching around blind is for first-timers)
  • Adjustable belt tension
  • Fully beefed-up casting for maximum durability
  • Direct upgrade over classic tin-style inners

WHAT'S iN THE BOX

  • Eagle Inner Primary Cover — Shovelhead fitment
  • Stainless mounting hardware for your outer cover
  • Stainless engine case mounting bolts

Installation

Designed for all 1970–1999 Shovelheads & Evos running a 4-speed transmission.
Early Evo motors with a 4-speed setup should work in theory, but we haven’t confirmed it in the wild yet.

  • Kickstart-only setups
  • All early tin outer primary covers
  • 1.5" belt drives — stock clutch or BDL
  • Alternator cases
  • Horseshoe oil tank with left-side mounting tab is needed

Requires: Transmission bearing support

SHIPPING

By land or by sea and sometimes by air, you'll get it!

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