Vertex Top End Piston Kit 47.45 mm for Honda CR85R/CR85RB (VTK22863B)

Restore reliable top-end performance with the Vertex VTK22863B Top End Piston Kit, designed as a cast OEM replacement for Honda CR85R and CR85RB motorcycles. This kit is engineered for riders and technicians seeking dependable fitment, consistent performance, and a practical replacement solution for worn or damaged piston components.
The piston is manufactured from gravity-cast aluminum alloy with an 18% silicone content, providing a balance of strength, durability, and controlled expansion characteristics. Unlike forged pistons, this cast Vertex piston is designed to match original-equipment replacement requirements. The piston receives a T-5 hardening and tempering cycle to support durability under demanding operating conditions.
A high-tech molybdenum disulfide coating is applied to the piston skirt to promote faster break-in and help increase piston service life. This coating supports smoother initial operation while helping reduce friction between the piston skirt and cylinder wall. The kit includes the piston, piston rings, wrist pins, circlips, top-end gaskets, and a wrist-pin bearing for a comprehensive top-end service.
Designed for compatible Honda CR85R and CR85RB applications, the Vertex VTK22863B Top End Piston Kit provides the essential components needed for a professional piston replacement. Verify the motorcycle model, year, bore specification, and application before installation to ensure proper fitment and performance.

Features:

• Application: Designed for Honda CR85R and CR85RB motorcycles

• Part Number: Vertex VTK22863B

• Piston Type: Cast OEM replacement piston

• Material: Gravity-cast aluminum alloy with 18% silicone content

• Heat Treatment: T-5 hardening and tempering cycle

• Skirt Coating: Molybdenum disulfide coating for faster break-in and increased piston life

• Kit Contents: Includes piston, rings, wrist pins, circlips, top-end gaskets, and wrist-pin bearing

Ships from Parts Unlimited.