Harley Davidson 1984-98' 88" Evolution Big Bore Cylinder Kit-Black

Harley Davidson 88" Big Bore Kit for Pre-98' Evolution Series Engines. Increase your stock Evolution engine with our 88" cylinder kit.
Our kit includes two 3-5/8" black cylinders which have been honed for final fitment with Wiseco 9.25:1 compression flat top pistons and rings.

Case boring will be required for final fitment.

Bottom of cylinder spigot is 3.875. Order top end gasket kit separately.