The Torkster 883-1200 conversion is a fantastic value in the power-per-dollar department, as it adds nearly 65% more power to the 883! The Torkster is not just a bore job to increase displacement, but a highly refined cylinder and head package that promotes big gains in power and torque.

The key is in the blueprinting of the head. After cleaning, new Step-Lock guides are hand-fit to new, high-flow stainless steel valves. Next, the bowl in the port is aligned to the center of the valve using a special form tool that promotes high velocity for optimum air to fuel atomization ratios. The result is increased fuel efficiency, and in layman’s terms, a big, fat, long torque curve!

The heads are delivered assembled with Viton® seals and a performance valve spring set; and after nearly 8 pounds of cast iron is removed from the cylinders, they are precisely fitted with lightweight, reverse-dome forged pistons. The factory carburetor is modified with our HPCV carburetor service for improved throttle response and drivability, and a complete top end gasket set is supplied.

If you enjoy the feeling of strong power that really sits you back against the seat when you twist the grip, the Torkster kit is for you!

These kits are available from any Zipper’s Performance Products dealer, or you can send your carefully packed parts directly to Zipper’s. The Torkster 1200 kit requires modification to your cylinders and heads. The Torkster kit requires modification to your cylinders, heads and carburetor. Your original 883 parts are modified and returned to you, ready for installation. In-shop time is generally 1-2 weeks. Please pack your parts carefully!

All kits can be purchased whole or in any combination of desired components, please contact our sales department at 410-579-2828 for more details and pricing.



Zipper’s Job Order Sheet


Not legal for sale or use in California on any pollution controlled motor vehicle.

Not legal for sale or use on any EPA pollution controlled motor vehicle.

Weight 1 lbs
Emissions Compliant

Country of Origin

Engine Type

Fuel / Air


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