Free shipping on orders over $149
My Garage
Add your bike to check fitmentSelect bike
Product image
S&S Cycle

S&S Cycle #91-9001 - 3-5/8" Big Bore Cylinder and Piston Kit

Part #: 0931-0690
From $1,796.36
S&S Cycle #91-9001 - 3-5/8" Big Bore Cylinder and Piston Kit—
$1,796.36

Fits These Vehicles

Shipping & Returns

Description

Installing this 3-5/8" big bore kit will increase the displacement of stock 80" HD® shovelhead engines to 88" using the stock 4-1/4" flywheels. This may also be used to build an 88" engine in 74" shovelheads if a 4-1/4" stroke flywheel assemble is also installed. The kit includes S&S 3-5/8" bore cylinders, 3-5/8" bore forged pistons with rings and wristpins, S&S stainless steel head bolts, base nuts, head gaskets, base gaskets, exhcaust gaskets, and instructions. Compression is 7.5:1. The cylinders are stock length so stock length pushrods and manifold may be used.

Fitment

Year(s)MakeModel CodeModel
1966-1984Harley-Davidson—Big Twin
Related products

You might also want to check out these products.