Retrocycle Harley Motorcycle Parts


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601824: 106 Inch Big Bore kit - Black Powdercoat by S and S. Fits 2007 and newer Harley Twin Cam (OEM: 106-3760)

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106 Inch Big Bore kit - Black Powdercoat by S and S.  Fits 2007 and newer Harley Twin Cam
106" Big Bore Kit for 2007-Up Big Twin from S&S - Black
Picture may not correctly represent this product.

See in 2011 Catalog


Despite what some say, bigger is better, and if making something bigger is easy, thats the best! A big bore kit is an easy way to achieve more displacement, and if you can install it without rebalancing flywheels or boring the crankcases, thats about as easy as it gets. Thats the idea behind the new S&S 97" big bore kits for 1999-06 big twins and the 106" big bore kits for 2007-up big twins. No need to bore or even split the cases, just do the cylinder and piston swap. In addition to the ease of installation, they look great because the cylinders are available with the same silver or black wrinkle powdercoat as stock, so they match the stock finish of your engine.

At 3.927" bore, these cylinders have the largest bore that we feel can safely be used in a cylinder with stock spigot diameter. In fact, this kit is only offered with S&S cylinders because, even though stock cylinders can physically be bored to fit the 3.927" pistons, we are not confident that the material used to make the stock cylinder liner and spigot is strong enough. The cylinder liner material in S&S cylinders is much stronger, and has proven its ability to stand up to the added power in numerous dyno pulls, street miles, and a lot of quarter mile drag strip runs. There is a trade-off for the ease of installation, which is that only one piston oversize is available for this kit. This really is as big as we are willing to go with a stock diameter cylinder spigot.

Stroke: 4 3/8", displacement 106", 10.2:1 compression with stock heads




Approximate Weight: 13.50 lbs

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CCI-601824

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