Fits: Harley Davidson Big Twin Models 2007-up
S&S® highly recommends installing a performance cam for easier starting and better engine performance.
S&S high flow cylinder heads will provide further horsepower gains and are machined for installation of manual/electric compression releases.
For an additional .2 bump in compression, order .030"" thick head gaskets #900-0216 (2 pack). Remember to check your clearances.
Cylinder w/ piston kits include fitted pistons and cylinders that require no boring or honing
""Pretty fast for a stock bike, brother!"" That’s a comment you might hear when you’re running an S&S® 97"" or 106"" big bore kit with our new, redesigned and retooled cylinders. We’ve made a host of changes to improve the strength and cooling capabilities of our big bore cylinders, but best of all we’ve made them cosmetically difficult to tell from stock Harley-Davidson® jugs. Upgrade your ride with more displacement and power, but don’t let anybody know!
FEATURES AND BENEFITS
Largest bore we feel can safely be used in a cylinder with a stock spigot O.D.
Bolt-on 9 to 10 cubic inches—cylinders do not require crankcase machining to install
Piston weight for 97"" & 106"" kits are the same as stock, requiring no flywheel rebalancing
Forged coated pistons are compatible with stock or S&S Super Stock® 89cc heads
Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams
Silver or black wrinkle powdercoat cylinder finish color matches stock Harley-Davidson® finish
- Piston set with rings
- Top end gasket kit
- S&S cylinders
- Displacement - 106""
- Stroke - 4 3/8""
- Bore - 3.927""
- Cylinder Length - 4.937""
- Piston Type - Forged
- Stock Compression Ratio - 10.0:1
- 89cc S&S Compression Ratio - 9.7:1