Cylinder Works Big Bore Cylinder Kit with Vertex Pistons, 90.00 mm (51001-K01)

Upgrade your KTM engine with the Cylinder Works 51001-K01 Big Bore Cylinder Kit, engineered to deliver dependable performance, long service life, and reduced engine noise. This complete kit includes a precision cylinder matched with Vertex pistons for reliable fitment and consistent operation. The 90.00 mm big-bore configuration provides a performance-focused replacement solution while maintaining an OEM-style appearance.
The cylinder features a nickel silicon carbide sleeve designed for durability, efficient heat transfer, and resistance to wear. Its finish and overall appearance are virtually identical to OEM cylinders, making it an excellent choice for riders and technicians seeking a high-quality replacement with a factory-style look. The cylinder is designed to install without machine work unless otherwise noted for the specific application.
Each Cylinder Works 51001-K01 kit includes the cylinder, piston, piston rings, wrist pin, retaining clips, and required gaskets. Matching components help simplify installation and support proper engine function without the need to source individual parts separately. Built in the USA, this kit is manufactured for dependable service in demanding powersports applications. Verify vehicle compatibility and application-specific requirements before installation.

Features:

• Big Bore Design: Uses a 90.00 mm cylinder configuration for performance-oriented engine upgrades.

• Matched Vertex Pistons: Includes compatible Vertex pistons to support longevity, performance, and reduced engine noise.

• Nickel Silicon Carbide Sleeve: Provides a durable cylinder surface with efficient heat transfer and wear resistance.

• OEM-Style Appearance: Designed to look virtually identical to the original equipment cylinder.

• Complete Installation Kit: Includes cylinder, pistons, rings, wrist pin, retaining clips, and gaskets.

• No Machine Work Required: Designed for installation without machining unless specifically noted for the application.

• Made in the USA: Manufactured by Cylinder Works for dependable powersports performance.

Ships from Parts Unlimited.