- Home Page /
- Automotive /
- Motorcycle Parts /
- Parts /
- Engine /
- Cylinder Heads /
- Cylinder Works 40004-K03 Standard Bore Cylind...
0 ratings
Item #:
221192468
Cylinder Works 40004-K03 Standard Bore Cylinder Kit (249cc) - 77.00mm Bore - 13.75:1 Compression
Item #:
221192468
€ 678
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Only 8 items left in stock.
Order now and get it around Tuesday, September 29
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the Factory cylinders.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Performance
With a 13.75:1 compression ratio, this kit significantly boosts horsepower and torque, enhancing your vehicle's performance for racing or off-road adventures.
Precision Engineering
Designed with a standard bore of 77.00mm, it ensures optimal fit and compatibility, making installation smoother and quicker compared to competitors in the market.
Durable Materials
Constructed with high-quality components, this cylinder kit offers exceptional durability and longevity, reducing maintenance costs and extending the lifespan of your engine.
Product Details
Product Technical Details
| Manufacturer | Cylinder Works |
| Brand | Cylinder Works |
| Model | Standard Bore Cylinder Kit (249cc) - 77. |
| Item Weight | 9.51 pounds |
| Product Dimensions | 14 x 10 x 8 inches |
| Manufacturer Part Number | 40004-K03 |
Who Should Buy?
-
Performance Enthusiasts
Ideal for users looking to enhance their bike's performance with higher compression and displacement.
-
Motocross Riders
Designed for off-road riders seeking more power and torque to tackle challenging terrains effectively.
-
DIY Mechanics
Perfect for hobbyists or mechanics wanting to upgrade or repair their engine with quality aftermarket parts.
-
Casual Riders
Not suitable for everyday riders seeking a smooth and unobtrusive riding experience without extreme modifications.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is included in the cylinder kit?
Answer: The kit includes gaskets, cylinder, piston, rings, pin, and clips. -
Question:
Is re-plating required for these cylinders?
Answer: No, the cylinders are ready-to-install with no re-plating required. -
Question:
Will these cylinders match my factory cylinders?
Answer: Yes, they look virtually identical to factory cylinders.
Cylinder Works Cylinder Heads Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
€ 678
Order now and get it around Tuesday, September 29
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 8 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Ready-to-install, hassle-free bolt-on design.
- No re-plating needed, saving you time and money.
- Identical appearance to factory cylinders for seamless integration.
- Includes matched Vertex pistons for enhanced longevity and performance.
- Features Nickel Silicon Carbide plating for exceptional durability.
- Complete kit comes with all necessary components for installation.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.