88" 3 5/8" Big Bore Cylinder and Piston Kit for 1984-'99 Big Twins with Stock Heads - Natural Aluminum Finish speaker 8mm 78 x 67

8mm 78 x 67

Bolt-on kit - No machining required

or whatever else you can fit in The Stash Tube

Fits 2009-2013 Touring

88" 3 5/8" Big Bore Cylinder and Piston Kit for 1984-'99 Big Twins with Stock Heads - Natural Aluminum Finish speaker 8mm 78 x 67Installing this 3 5 8" big bore kit will increase the displacement of stock 80" HD Evolution big twin engines to 88" using the stock 4 1 4" flywheels. The kit includes S&S 3 5 8" bore cylinders, 3 5 8" bore flat topped forged pistons with rings and wristpins, head gaskets, base gaskets, exhcaust gaskets, and instructions. The cylinders are shorter than stock, so shorter pushrods, and shorter manifold will be needed to complete the engine.