S&S Super Stock Evo Heads Pair 90-1000F 90-1000R Complete Rust Wear

Matching pair of S&S Cycle Super Stock cylinder heads for Harley-Davidson Evolution Big Twin applications. The heads are complete with valves and springs but show substantially more age and cosmetic wear than the other pair in this batch.

Part Number / Markings: 90-1000F Front / 90-1000R Rear
Condition: Used – Complete Pair with Visible Rust / Wear

DETAILS: Both heads include valves and valve springs. There is visible surface rust and oxidation on portions of the valve springs and vented valve collars / retainers, along with normal wear, staining, and cosmetic aging. These should be cleaned and professionally inspected before installation, with particular attention to the springs, retainers, guides, seats, and valves.

USED PARTS DISCLAIMER: This is a used motorcycle part and may show normal signs of age, installation, removal, storage, and previous use, including scratches, scuffs, discoloration, surface corrosion, paint loss, oxidation, or other cosmetic wear. Any known damage or defects are noted when known. Unless otherwise stated, the photos show the actual item being sold and are considered part of the description.

FITMENT NOTES: S&S Super Stock heads are designed for Evolution Big Twin applications, including 1984-1999 Harley-Davidson Big Twin engines. Because of the visible corrosion in the valvetrain, treat this set as a good rebuild / inspection candidate rather than a bolt-on-ready pair. Verify chamber configuration, piston compatibility, spring pressure, installed height, valve-to-piston clearance, and the complete engine setup.

FITMENT: Buyer is responsible for verifying fitment before purchase. Fitment information is provided as a reference based on available part numbers, casting marks, bore measurements, and published references. Engines may have been modified over time, so compare part numbers, combustion chamber, valve configuration, bore, cylinder height, base spigot, mounting points, and photos with your existing engine components.

QUESTIONS? Send us a message before purchasing if you need additional measurements, photos, condition details, or clarification on what is included.

SHIPPING: Orders are typically processed and shipped within 1–2 business days after payment. Tracking is provided once the order ships. Engine parts are packed carefully according to their size and weight.