Piston Kit (Forged Big Bore)

Upgrade your 4-stroke engine with a VERTEX Pro-BB forged big bore piston kit—made in an original OE form to match big-bore cylinder applications while delivering the strength and reliability demanded in high-performance riding. By increasing engine displacement, this kit helps deliver stronger torque and improved peak horsepower, making your bike feel more responsive under load.

The piston is forged from 2618 aluminum alloy for superior durability, then heat-treated using a T-5 hardening and tempering cycle to enhance strength and stability in harsh conditions. A high-tech Molybdenum Disulphite skirt coating reduces friction to support faster break-in time and longer piston life—ideal for riders who want dependable performance after a big-bore build.

Key features:

• ✅ Pro-BB forged design (OE form) for big-bore cylinder use
• ✅ T-5 heat-treated for improved strength and longevity
• ✅ Moly-coated piston skirt for reduced friction and faster break-in

Benefits of use:

• 🔹 More performance: increased displacement supports higher torque and peak horsepower
• 🔹 Longer service life: forged 2618 alloy and durable coatings handle demanding conditions
• 🔹 Convenient rebuild solution: core components included in one complete kit

Technical specifications:

• 📌 Brand: VERTEX
• 📌 Vendor part number: 24637C
• 📌 Engine type: 4-Stroke
• 📌 Material: Forged 2618 aluminum alloy
• 📌 Skirt coating: Moly coated
• 📌 Ring material: Nitride-coated steel
• 📌 Style: Forged Big Bore
• 📌 Kit contents: piston, rings, wrist pin, circlips

Why choose this product?

• ⭐ Proven forged construction for strength and durability in performance builds
• ⭐ Purpose-built big-bore design to help unlock more torque and power
• ⭐ Complete kit format helps make your rebuild faster and more straightforward