S&S big bore kit: larger fins, 3.927 in bore, 4-3/8 in stroke, 10:1 compression. Bolt-on installation—no machining or rebalancing required. Coated forged pistons compatible with stock or S&S heads; enlarged valve pockets. Includes: cylinders, pistons/rings, top-end gaskets, pushrods, lifters, 585CE Easy Start cams. EFI requires recalibration. Fuel system not included. Made in the USA.
Enlarged fin surface area for optimized heat dissipation and improved thermal stability
Bore increased from 3.750" to 3.927" to increase displacement
4-3/8" stroke and 10:1 compression ratio with stock heads
Simplified installation: no machining or rebalancing required
Coated forged pistons, compatible with stock heads or S&S Super Stock 79cc and 89cc heads
Enlarged valve reliefs on S&S pistons to accept oversize valves and high-lift camshafts
11 fins and a full-coverage fin pattern on the cam side of the cylinders that faithfully reproduces the original style
Complete kit including S&S cylinders with gaskets, a set of pistons with rings, a top-end gasket kit, pushrods, lifters, chain-drive Easy Start 585CE camshafts, and installation instructions
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New
106" Hot Set Up® Engine Performance Kit
S&S big bore kit: larger fins, 3.927 in bore, 4-3/8 in stroke, 10:1 compression. Bolt-on installation—no machining or rebalancing required. Coated forged pistons compatible with stock or S&S heads; enlarged valve pockets. Includes: cylinders, pistons/rings, top-end gaskets, pushrods, lifters, 585CE Easy Start cams. EFI requires recalibration. Fuel system not included. Made in the USA.
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S&S big bore kit: larger fins, 3.927 in bore, 4-3/8 in stroke, 10:1 compression. Bolt-on installation—no machining or rebalancing required. Coated forged pistons compatible with stock or S&S heads; enlarged valve pockets. Includes: cylinders, pistons/rings, top-end gaskets, pushrods, lifters, 585CE Easy Start cams. EFI requires recalibration. Fuel system not included. Made in the USA.