Vertex – Piston Kit (KTM)

Vertex manufactures their piston kits with help of factory race teams to ensure all of their products meet the expectations of consumers world-wide. These KTM Vertex Piston Kits are precisely manufactured by powersports enthusiasts who understand the importance of reliable engine components. All of these Vertex Piston Kits are specifically designed to meet the dimensions of your cylinder and are completed with a set of chrome plated or nitride coats piston rings, a fully cased hardened wrist pin, and circlips. With 3 different types of piston compressions to choose from, you should have no problem finding the exact piston kit you need for your KTM!

Images are a representation and not exact to your specific model

KTM Vertex Piston Kits:

• All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
• Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
• Forged Replica pistons are forged from 2618 aluminum for superior strength and durability
• Forged High Compression pistons improve power and torque across entire rpm range
• Forged Big Bore pistons increase engines displacement, torque, and peak horsepower
• Forged Replica pistons are forged OE replacements
• All pistons are heat treated with a T-5 hardening and tempering cycle
• Replica pistons and all rings are OEM replacements
• Kits include piston, rings, wrist pin and circlips
• Two stroke replacement rings are sold individually (Example if your piston has two rings you will want to order two rings)
• Four-stroke piston rings sold as a set

Installation Tips for Vertex Pistons:

After disassembling the cylinder head and the cylinder, it’s necessary to measure the actual cylinder diameter (1), using a dial bore gauge. When actual bore size is known then it is time to pick the right VERTEX piston to fit your bore size, respecting the clearance suggested with the cylinder. Attention must be paid to any markings (i.e. T) on the rings surface: always position the ring with the written part on the top side.

To assemble the rings on the piston you must start from the oil ring and introducing as first the spring (2) paying attention to not place one on the top of the other the two extremities. After setting the two foils one up and the other down at direct contact with the groove, taking care that the open tips must be at 1200 from the spring open tips.

We are now ready to assemble the compression ring(s) into the piston groove(s): first of all pay attention to not crush or damage the ring during installation, every precaution should be taken not to compromise the ring integrity with the groove and to not reduce the rings retaining pressure.

CLICK HERE FOR MORE DETAILED INSTRUCTIONS (PDF)