GY6 2 valve big valve cylinder head front view for 150cc 125cc scooter engines

GY6 150cc 125cc scooter cylinder head back view with combustion chamber

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.

Category: GY6 Cylinder Heads Brand: Ruizheng Racing

Description

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

Compatible Brand

KYMCO

Ruizheng Racing manufactures aftermarket and custom motorcycle engine parts for selected KYMCO-compatible applications. The KYMCO name is used only to identify vehicle or engine compatibility. Products shown on this page are manufactured or supplied by Ruizheng Racing unless otherwise stated.

Compatible with selected KYMCO motorcycle or engine applications. Ruizheng Racing provides aftermarket and OEM/ODM engine components including crankshafts, camshafts, connecting rods, pistons and related parts. Compatibility should be confirmed by model, engine code, year or sample before ordering.

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