S&S CYCLE - 90-0098 - Top End Kit - 3.500” Bore - 80” Big Twin '79-'84

The S&S CYCLE 90-0098 is a top end kit - 3.500” bore - 80” big twin '79-'84 engineered for street applications where fit, function, and build quality are the baseline expectation. Includes a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders (3-7/16” for 74” engines or 3-1/2” for 80”), forged 8:1 compression pistons complete with rings and wrist pins, manifold clamps, manifold seals, all required hardware, and gaskets. Pistons are pre-fit to the cylinders, so there is no machine work to be done and very little down time, giving you a level of quality that holds up across the full service life of the component. Stroke Length: 4-1/4”. Riding Style: Street. Displacement: 80”. For riders who know the difference quality components make, the 90-0098 is the right call. Sold as a complete kit.

Features

• Includes a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders (3-7/16” for 74” engines or 3-1/2” for 80”), forged 8:1 compression pistons complete with rings and wrist pins, manifold clamps, manifold seals, all required hardware, and gaskets
• Pistons are pre-fit to the cylinders, so there is no machine work to be done and very little down time
• Made in the USA

Specs

• Stroke Length: 4-1/4”
• Riding Style: Street
• Displacement: 80”
• Bore Size: 3.500”
• Compression Ratio: 8.0:1
• Product Name: Cylinder Kit
• Units: Kit