Vertex 860cc Big Bore Forged Piston Kit
Vertex 860cc Big Bore Forged Piston Kit
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Estimated delivery: Feb 04 - Feb 08
About this product
About this product
Upgrade your 4-stroke engine with the Vertex Forged Big Bore Piston Kit. This kit delivers enhanced performance and reliability, making it ideal for enthusiasts and professionals seeking to maximize their engine's potential.
Description
The Vertex 860cc Big Bore Piston Kit is engineered to significantly increase your engine's displacement, torque, and peak horsepower. The forged aluminum piston is heat-treated using a T-5 hardening and tempering cycle, ensuring exceptional strength and durability. A high-tech Molybdenum Disulphite coating on the piston skirt reduces friction, promoting faster break-in times and extending piston life. Designed as an OE stock compression big bore piston, this kit provides a straightforward yet powerful upgrade for your 4-stroke engine. This Vertex piston kit provides optimal performance and longevity for your machine.
Features & highlights
- Forged aluminum construction provides superior strength and durability.
- T-5 heat treatment enhances piston hardness and wear resistance.
- Molybdenum Disulphite coated skirt reduces friction for quicker break-in.
- Increases engine displacement to 860cc, boosting torque and horsepower.
- Designed for OE stock compression, ensuring compatibility and reliability.
- Complete kit includes piston, rings, wrist pin, and circlips for a comprehensive upgrade.
Technical specifications
- Brand: Vertex
- Piston Material: Forged Aluminum
- Engine Type: 4-Stroke
- Displacement: 860cc
- Cylinder Diameter: 91.00 mm
- Piston Diameter: 90.95 mm
- Bore - Oversize: +6.00 mm
- Compression Ratio: 9.0:1
- Skirt Coating: Molybdenum Disulphide
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
VERTEX
23910A
Piston Kit
9.0:1
860 cc
Aluminum, Forged
91.00 mm
90.95 mm
Molybdenum Disulphite
4-Stroke
Kit


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

