150cc 125cc GY6 QMJ157 61mm Performance Big Valve GY6 2 Valve Cylinder Head
Upgrade your scooter with our GY6 2 Valve Cylinder Head. Available in 58.5mm to 63mm sizes with big valve options (23/28 & 30.5/26.5). Perfect GY6 150cc racing parts for Puerto Rico riders and beyond. MOQ 100pcs.
Description
{
“@context”: “https://schema.org/”,
“@type”: “Product”,
“name”: “GY6 2 Valve Cylinder Head”,
“image”: [
“https://ruizhengracing.com/wp-content/uploads/2025/09/gy6-cylinder-head-1.jpg”,
“https://ruizhengracing.com/wp-content/uploads/2025/09/gy6-cylinder-head-4.webp”
],
“description”: “GY6 2 Valve Cylinder Head, big valve high-performance part for 150cc scooters, ATVs, and racing builds. Available in multiple sizes: 58.5mm, 60mm, 61mm, 62mm, 63mm with 23/28 and 30.5/26.5 valve options.”,
“sku”: “GY6-2V-HEAD”,
“mpn”: “GY6HEAD150”,
“brand”: {
“@type”: “Brand”,
“name”: “Ruizheng Racing”
},
“offers”: {
“@type”: “Offer”,
“url”: “https://ruizhengracing.com/product/gy6-2-valve-cylinder-head/”,
“priceCurrency”: “USD”,
“availability”: “https://schema.org/InStock”,
“priceValidUntil”: “2025-12-31”
}
}
GY6 2 Valve Cylinder Head – High Performance GY6 150cc Racing Parts

🔥 Product Overview
The GY6 2 Valve Cylinder Head is a racing upgrade engineered for
GY6 150cc scooters, ATVs, and go-karts. Designed with big valve configurations
(23/28mm and 30.5/26.5mm), this part significantly improves airflow, combustion, and horsepower.
It is one of our most demanded GY6 racing parts in Puerto Rico, where riders value
reliability + power.
MOQ: 100 pieces – ideal for wholesalers, scooter parts shops, and racing teams.
⚙️ Specifications
- Valve Sizes: 23/28mm and 30.5/26.5mm
- Available Bore Sizes: 58.5mm, 60mm, 61mm, 62mm, 63mm
- Stud Spacing: A case (54mm), B case (57mm)
- Material: High-strength aluminum alloy
- MOQ: 100pcs

⭐ Key Features
- Enhanced airflow with big valve design for higher RPM performance.
- Durable construction with heat-resistant aluminum alloy.
- Compatible with GY6 150cc engines and big bore kits up to 200cc.
- Proven choice for Puerto Rican riders demanding strong acceleration and reliability.
- Perfect fit for GY6 crankshaft upgrades.
🛠️ Compatibility
This cylinder head fits engines with the following codes: 157QMJ, 161QMK, 152QMI, 1P61QMK,
1P57QMJ, JJ157QMJ, 154FMI, and other QMJ, QMK, and QMI models.
Works with scooters, go-karts, and ATVs equipped with 150cc GY6 4-stroke engines.
❓ FAQ
Q1: Is this GY6 cylinder head suitable for racing?
✅ Yes. The big valve configuration boosts mid-to-high RPM performance, making it perfect for racing applications.
Q2: What is the MOQ for bulk orders?
✅ The minimum order quantity is 100pcs, suitable for distributors and retailers in Puerto Rico and beyond.
Q3: Does it fit both A and B case engines?
✅ Yes. Options are available for A-case (54mm spacing) and B-case (57mm spacing).
📎 Related GY6 Engine Parts
📞 Contact & Social Media
For wholesale inquiries, please contact us:
📱 Phone/WhatsApp: +8613690833592
💬 WeChat: alla_ing
Follow us for product updates and racing builds:
Brand
KYMCO
Our Kymco aftermarket performance parts are engineered for both everyday riders and racing enthusiasts, delivering improved engine response, power, and long-lasting durability.




Reviews
There are no reviews yet.