Features & Benefits
- High quality cylinder replacement part
- Corrosion resistance, rustproof, and durable
- Provides reliable performance and long life service
- Easy to install
- Always available for help, offering replacement or refund if not satisfied
- Home Page /
- Automotive /
- Motorcycle Parts /
- Parts /
- Engine /
- Rebuild Kits /
- WOOSTAR 56mm Big Bore Cylinder Rebuild Kit wi...
0 ratings
Item #:
86645544
WOOSTAR 56mm Big Bore Cylinder Rebuild Kit with Piston Replacement for YinXiang 140cc Engine YX140 1P56FMJ Air Cooled Motor Dirt Pit Bike
Item #:
86645544
SHP 116
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 6 items left in stock.
Order now and get it around Thursday, August 27
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
High quality cylinder replacement part with reliable performance and long life service.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step 1 Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Performance Upgrade
The WOOSTAR 56mm Big Bore Cylinder Kit enhances engine power significantly, offering improved acceleration and efficiency, perfect for dirt bike enthusiasts looking for optimal performance from their YX140 engines.
Complete Replacement
This rebuild kit includes all necessary components such as the piston and cylinder, ensuring a hassle-free installation process that saves time and effort for mechanics and DIY enthusiasts alike.
Durable Construction
Crafted from high-quality materials, this cylinder rebuild kit is designed for longevity and reliability, making it the ideal choice for riders who demand performance and durability in challenging terrains.
Product Details
Product Technical Details
| Manufacturer | WOOSTAR |
| Brand | WOOSTAR |
| Item Weight | 3.28 pounds |
| Package Dimensions | 6.18 x 5.71 x 4.37 inches |
| Manufacturer Part Number | YL-K074-301 |
Who Should Buy?
-
Dirt Bike Enthusiasts
Ideal for riders looking to enhance their dirt bike's performance with a reliable rebuild kit.
-
Engine Rebuilders
Perfect for hobbyists or mechanics who enjoy rebuilding engines and need high-quality piston replacements.
-
Budget-Conscious Users
Cost-effective solution for those wanting to improve engine performance without buying a new bike.
-
Beginners
Not suitable for novice riders unfamiliar with engine maintenance or rebuilding processes.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is included in the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit?
Answer: The WOOSTAR 56mm Big Bore Cylinder Rebuild Kit includes a high-quality cylinder, piston, piston rings, and necessary gaskets. These components are essential for enhancing the performance and efficiency of the YinXiang 140cc Engine. By using this kit, you can achieve improved power output, better throttle response, and a smoother ride on your dirt pit bike. It’s designed specifically for the YX140 model, ensuring compatibility and optimal performance enhancements. -
Question:
How do I install the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit?
Answer: Installation of the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit requires some mechanical knowledge and basic tools. Begin by removing the existing cylinder and piston from your engine. Clean the engine block thoroughly before replacing it with the new cylinder from the kit. Ensure the piston rings are properly seated and follow the manufacturer's guidelines for torque specifications. This kit is ideal for DIY enthusiasts looking to improve their bike's performance by enhancing engine displacement and power delivery. -
Question:
Is this cylinder rebuild kit compatible with other engine models?
Answer: The WOOSTAR 56mm Big Bore Cylinder Rebuild Kit is specifically designed for the YinXiang 140cc Engine, particularly the YX140 model. While it may share similarities with other engines, it is essential to confirm compatibility before purchase. Using the kit on incompatible models might lead to performance issues or engine damage. Always consult your bike’s manual or a professional mechanic if you're unsure about compatibility, to ensure optimal performance and longevity. -
Question:
What performance improvements can I expect after installation?
Answer: Upon installing the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit, you can expect significant performance improvements, including increased horsepower and torque. The enhanced cylinder and piston design allow for better airflow and combustion efficiency, resulting in a more powerful and responsive ride. This kit is particularly beneficial for riders who enjoy off-road adventures and need an engine that can handle rough terrains with ease, making your dirt bike perfect for exciting trails. -
Question:
Can I use this kit for racing applications?
Answer: Yes, the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit is well-suited for racing applications. The increased engine displacement improves acceleration and overall performance, which can be essential in competitive settings. However, ensure that your bike meets any racing regulations regarding modifications. Using this kit can give you a competitive edge while racing on dirt tracks or during motocross events, allowing for quicker lap times and enhanced rider experience. -
Question:
What maintenance is required after installing the rebuild kit?
Answer: After installing the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit, regular maintenance is crucial to keep your engine performing optimally. This includes checking and changing the engine oil at regular intervals, inspecting the piston and rings for wear, and cleaning the air filter frequently. These maintenance tasks will help prevent engine damage and prolong the longevity of your components, ensuring a reliable performance during all your dirt biking activities. -
Question:
How does this kit improve engine cooling?
Answer: The design of the WOOSTAR 56mm Big Bore Cylinder employs improved cooling features, which enhance the heat dissipation process of the engine. With a larger bore, the cylinder provides a better surface area for airflow, leading to more effective cooling during operation. This is especially important during prolonged riding sessions, where overheating can be a concern. Riders can expect increased reliability and performance, as an efficiently cooled engine maintains better power output even in demanding conditions. -
Question:
What tools will I need to install the kit?
Answer: To install the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit effectively, you will need a set of mechanical tools, including a socket and wrench set, torque wrench, and possibly a piston ring compressor. Having a clean workspace and necessary tools will facilitate the installation process. This kit is perfect for those who are comfortable performing engine work, making it an ideal project for DIY mechanics looking to enhance their bike's performance efficiently. -
Question:
How does the quality of WOOSTAR parts compare to OEM parts?
Answer: WOOSTAR parts, including the 56mm Big Bore Cylinder Rebuild Kit, are known for their high quality and performance standards. While OEM parts are manufactured to specific specifications, WOOSTAR components often exceed those standards in durability and performance. They are designed to withstand rigorous use in off-road conditions, offering reliable performance and enhanced longevity. Many users find that WOOSTAR parts deliver exceptional value while providing excellent performance for dirt biking adventures. -
Question:
Where can I buy the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit?
Answer: You can buy the WOOSTAR 56mm Big Bore Cylinder Rebuild Kit with Piston Replacement for your YinXiang 140cc Engine at Ubuy. Ubuy offers reliable service and a wide selection of automotive parts, ensuring you receive the correct product for your needs. By purchasing through Ubuy, you can enjoy a seamless shopping experience while enhancing the performance of your dirt pit bike.
WOOSTAR Rebuild Kits Editorial Review
No editorial reviews found
Customer Reviews & Ratings
5 customers ratings
-
5 Star
46%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
54%
Review this product
Share your thoughts with other customers
Pros
- High-quality components
- Easy installation
- Improves engine performance
- Durable and reliable
- Compatible with various models
Cons
- May require basic tools for setup
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
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.
SHP 116
Order now and get it around Thursday, August 27
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 6 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
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.