Cylinder Works Big Bore Piston Kit 23403B
Original price was: $315.95.$300.15Current price is: $300.15.
Genuine Cylinder Works engine component. VEHICLE SPECIFIC. In stock, ships 1–3 days from USA. Shop all Engine at CG ATV & UTV Parts Shop.
10 in stock
Cylinder Works Big Bore Piston Kit 23403B
Sold by CG ATV & UTV Parts Shop — authorized US distributor of Cylinder Works powersports parts.
About This Product
Cylinder Works Big Bore Piston Kit 23403B
Cylinder Works Big Bore Piston Kit 23403B
Cylinder Works Replacement Piston Kits are purpose-built for machines running Big Bore Cylinder Kits from Cylinder Works. Piston Kits include an all new – not remanufactured – forged aluminum Vertex piston(s) as originally included in all Cylinder Works Big Bore Kits. Pistons are constructed from the highest quality 2618 aluminum alloy with full molybdenum disulphite skirts. Vertex Pistons meet or exceed OEM quality to restore compression, cylinder health and performance.
Specifications:
- Includes Vertex forged aluminum piston Part # 23403B
- Compression Ratio 12.0:1
- Cylinder Diameter 98 mm
- Displacement 480 cc
- Piston Diameter 97.960 mm
- Size Over Standard: 3.00mm
Features:
- Replacement piston(s) designed for Cylinder Works Big Bore Kits
- Piston size and compression matches specs of Cylinder Works Kit
- Forged 2618 aluminum pistons for superior strength and durability
- Includes case-hardened wrist pin and piston rings (with nitride or chrome plating)
- Piston supplied and manufactured by Vertex (Italy)
- Piston skirts treated to molybdenum disulphite coating for increased piston life, quicker break-in and reduced running noise
- New, not remanufactured, hardware
- Piston profile optimized by Vertex to match compression ratio, cylinder design and ring spec for each unique Cylinder Works Cylinder Kit application
- Note: Refer to Cylinder Works Big Bore Kit to confirm replacement Vertex Piston part number. Image for reference only. Kit contents vary with application.
Part Numbers
| Product Style | RevZilla Item # | Store Sku | MFR. Product # | Availability |
|---|---|---|---|---|
| Cylinder Works Big Bore Piston Kit 23403B | 10166252 | 23403B | In Stock: Ships within 24 hours |
Specifications
| Attribute | Detail |
|---|---|
| Brand | Cylinder Works |
| Part Number / SKU | 23403B |
| Category | Engine › Big Bore Kit |
| Condition | New — Factory Sealed |
| Availability | In Stock — Ships 1–3 Business Days |
| Price (USD) | $315.95 |
| Warranty | Manufacturer’s Limited Warranty |
Fitment & Compatibility
VEHICLE SPECIFIC
Questions about fit? Reach our technical team at cgatvandutvpartsshop.com/contact.
Installation Notes
Most bolt-on components require only basic hand tools and the vehicle’s service manual. Torque all fasteners to OEM specification. For electrical components, disconnect the battery before installation. Performance parts may require additional tuning or calibration — always verify requirements before install.
For detailed torque specs and wiring diagrams, refer to the manufacturer’s documentation or an authorized service center.
Safety & Compliance
All products listed here are sourced from authorized distributors and meet applicable SAE and ANSI standards where relevant. Electrical components comply with UL requirements for powersports applications. For regulatory standards governing off-road vehicle components, refer to the SAE International standards library and the U.S. Consumer Product Safety Commission.
About Cylinder Works
Cylinder Works is a recognized name in the powersports industry, engineering products for ATV and UTV riders who demand performance and durability. As an authorized Cylinder Works retailer, CG ATV & UTV Parts Shop offers genuine products backed by full manufacturer warranty coverage.
Frequently Asked Questions
-
Is the Cylinder Works Big Bore Piston Kit 23403B compatible with my vehicle?
This product is designed for specific fitment applications. VEHICLE SPECIFIC Use the fitment guide on this page or contact our team at cgatvandutvpartsshop.com/contact for a free compatibility check before ordering.
-
What warranty does the Cylinder Works Cylinder Works Big Bore Piston Kit 23403 carry?
Cylinder Works products carry the manufacturer’s standard limited warranty covering defects in materials and workmanship. Full terms are available at our warranty page.
-
What is the shipping timeline and do you ship internationally?
In-stock orders ship within 1–3 business days from our US warehouse. We currently serve all 50 states. For international inquiries, visit our contact page.
-
What is the return policy?
Unused, uninstalled items in original packaging qualify for returns within 30 days of delivery. Full details at cgatvandutvpartsshop.com/returns.
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