S&S Super Stock Evo Big Twin Cylinder Heads Pair 90-1000F 90-1000R

Matching pair of S&S Cycle Super Stock cylinder heads for Harley-Davidson Evolution Big Twin applications. This set includes the front and rear heads complete with valves and springs and is in great overall used condition.

Part Number / Markings: 90-1000F Front / 90-1000R Rear
Condition: Used – Great Condition / Complete Pair

DETAILS: Both heads are complete with valves and valve springs. From visual inspection, the fins, combustion-chamber areas, ports, and valvetrain components present very well with normal signs of previous installation and use.

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 replacement heads are designed for Harley-Davidson Evolution Big Twin engines, with S&S documentation covering 1984-1999 Evolution Big Twin applications. These heads are performance components and may be used with different bore, piston, compression, and cam combinations. Verify chamber size, valve-to-piston clearance, intake-manifold fit, rocker-box compatibility, and the complete engine combination before installation.

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.