Increase power the right way with the VERTEX Pro-BB Forged Big Bore Piston Kit. This kit is designed in original OE form for big-bore cylinder setups, giving your 4-stroke engine a meaningful performance gain through increased displacement—delivering stronger torque and improved peak horsepower where it matters most.
To keep reliability high under demanding riding conditions, VERTEX uses 2618 forged aluminum for superior strength and durability. Every piston is heat-treated with a T-5 hardening and tempering cycle, and the skirt is finished with a high-tech molybdenum disulphide (moly) coating to reduce friction, speed up break-in time and extend piston life.
Key features:
✅ Pro-BB forged piston in original OE form for big-bore cylinders
✅ T-5 heat-treatment cycle for strength and long service life
✅ Moly-coated piston skirt for faster break-in and reduced friction
Benefits of using it:
🔹 More displacement for increased torque and peak horsepower
🔹 Forged 2618 alloy construction for high-load durability
🔹 Complete kit simplifies rebuild/upgrade with matched components
Technical specifications:
📌 Bore size: 80.00 mm
📌 Displacement: 270 cc
📌 Compression ratio: 13.8:1
📌 Engine type: 4-Stroke
📌 Piston diameter: 79.50 mm
📌 Piston size: Standard Size A
📌 Piston material: Forged aluminum alloy (2618)
📌 Ring material: Nitride-coated steel
📌 Skirt coating: Moly coated
📌 Brand: VERTEX
📌 Vendor part number: 24405A
Why choose this product?
⭐ Built for performance and durability with forged 2618 aluminum
⭐ Friction-reducing coatings and heat treatment help extend engine life under hard use
⭐ Complete kit includes piston, rings, wrist pin and circlips for a straightforward install
