Overview

Increasing engine power with more displacement or providing durability and ring sealing can be obtained once you move beyond an O.E. production finished bore. 

The Engine Experts at Zipper’s have over 4 decades of precision sizing and finishing honing to provide a perfect custom fit, surface finish with optimum ring seal to assure your engine will seal up for each specific application.

Zipper’s cylinder department staff has enormous experience that employs the most advance equipment including the Sunnen SV-30 CNC Honing system to provide you with the best surface finish for each specific application.

Zipper’s offers custom cylinder kits for M8, Twin Cam and Sportster Engines with a large supply of special pistons, compression ratio options with custom domes built to Zipper’s demanding specifications in stock. These are designed for maximum performance and durability. Zipper’s also stocks the most popular shelf brand pistons from CP, KB and Wiseco for precision sizing to your cylinders cores.

Sending your cylinders in for service? First, email the job sheet and email to Pr************@****************ce.com, before shipping to assure we can fill your specific need. Click on red tab, Zipper’s Job Order Form, below.