Wholesale Motorcycle Engine Parts Valve Roller Rocker Arm Shaft

• Customization: Available
• After-sales Service: Contact Us
• Warranty: Contact Us
• Model NO.: SA-566888
• Type: Motorcycle Engine Assembly
• Start: Electric/Kick
• Cylinder NO.: 2 Cylinder
• Stroke: Two Stroke
• Cold Style: Air-Cooled
• Energy Transformation: Hydraulic Machine
• Certification: CCC, CE, ISO9001：2000
• Thermal Machine: External Combustion Type
• Four Stroke Principle: Compression Stroke
• Main Market: South Asia
• Item: Rocker Arm Shaft
• Casting Form Material: Metal
• Casting Metal: Cast Steel
• Casting Form Usage Count: Permanent
• Surface Treatment: Galvanized
• Surface Roughness: Ra3.2
• Machining Tolerance: +/-0.10mm
• Standard: AISI
• Name: Rocker Arm
• Technics: Casting
• Quality Certification: ISO9001:2015
• Shipping Port: Qingdao Port
• Packaging: Wood Case
• Inner Package: Carton Box/ Plastic Bag
• OEM Service: Yes
• Transport Package: Plywood Box
• Specification: 1/4-5/16, 5/16-3/8, 3/8-1/2, 1/2-5/8
• Trademark: ShengAo
• Origin: Shangdong, China
• HS Code: 87089910
• Production Capacity: 50000PCS/Month
• Package Size: 60.00cm * 45.00cm * 40.00cm
• Package Gross Weight: 45.000kg

Product Description

Wholesale Motorcycle Engine Parts Valve Roller Rocker Arm Shaft

Product Description

 

Type	motorcycle rocker arm
Material	Carbon steel, Cast Iron, OEM
MOQ	300pcs , small order also could been accepted
Delivery time	15 - 30 work days after receipt the deposit
Packing	Each pack in plastic bag and foam
remarks	1. All parts are under rigid quality control before shipment 2. High quality and reasonable price , we quote the price according to the quality and quantity . 3. We could offer your goods according to your samples and specification .

General Information
1. Compatible with motorcycle and ATV
2. Be used for motorcycle/ATV refit or after-sale maintain.
3.Many models atv clutch kits for option
4.Certificate: ISO/IS16949
5.Used for refit or after-sale maintain.
6. Steel plate material in good quality
7.High quality fibre disc
8. Product name : Motorcycle Rocker Arm/ Valve Rocker Arm/ Bearing Rocker Arm
 

Detailed Photos

Our Advantages

Advantages of Our Rocker Arm

1.Several Models For Choose
2.OEM quality standard ,Guarantee the quality
3.Long working life time
4.Positive customer feedback from overseas and domestic markets
5.Able to produce according to specifications with technical drawings
6.Sample Purpose order accepted
7.Packing according to specifications required
8.Flexible and conveninent logistic services

Installation Instructions

Our Service

1. OEM Manufacturing welcome: Product, Package...
2. Sample order
3. We will reply you for your inquiry in 24 hours.
4. After sending, we will track the products for you once every two days, until you get the products. When you got the goods, test
them, and give me a feedback. If you have any questions about the problem, contact with us, we will offer the solve way for you.

Company Profile

Packaging & Shipping

1. By Express: Usually 3-7 Days by DHL,FedEx,TNT, UPS, EMS
2. By Air line:  Usualy 7-10 days
3. By Sea-Container: Usually 20 days to asia, 30 days to Middle East and Europe, 40 days to Africa

FAQ

1. What is a Motorcycle Camshaft Rocker Arm?
A Camshaft Rocker Arm is a critical valve train component in many motorcycle engines (especially OHV - Overhead Valve and some OHC - Overhead Cam designs). It acts as a lever or follower that converts the rotational motion of the camshaft lobe into the vertical (reciprocating) motion required to open and close the engine's intake and exhaust valves. Proper rocker arm function is essential for engine timing, power, and efficiency.

2. What types of rocker arms do you manufacture?
We produce rocker arms for a wide range of motorcycle engines:

Roller Rocker Arms: Feature a needle bearing roller at the cam contact point, reducing friction and wear. Common in high-performance and modern engines.

Flat/Sliding Tappet Rocker Arms: Have a hardened pad that slides directly on the cam lobe. More traditional design.

Rocker Arms with Adjusters: Include a screw and locknut for manual valve lash (clearance) adjustment.

Complete Rocker Arm Assemblies: Including shafts, springs, and pins.

OEM Replacement & Performance Upgrades: Direct-fit replacements and enhanced versions (e.g., 1.6:1 ratio for increased valve lift).

3. What materials are your rocker arms made from?
Material selection is key for durability and performance:

Body/Base Material: Forged or Cast Steel (AISI 8620, 4140) for high strength and impact resistance. Ductile Iron is also used for some OEM applications.

Contact Surfaces: The cam lobe contact point (roller or pad) and the valve stem tip contact point are often hardened or fitted with special wear-resistant inserts.

Rocker Shaft: Hardened Chrome Molybdenum Steel.

Roller: Case-Hardened Steel with precision needle bearings.

Finish: May be heat-treated, shot peened for fatigue resistance, and/or coated (e.g., DLC - Diamond-Like Carbon for high-performance).

4. How do I identify the correct rocker arm for my motorcycle?
Exact fitment is crucial. Please provide the most accurate information:

Motorcycle Make, Model, Engine CC, and Year

Engine Type/Code
Clear photos of the old rocker arm from multiple angles (top, bottom, side, ends).

Key Measurements: Distance between shaft hole centers, roller/contact pad width, overall dimensions.

OEM Part Number (stamped on the part or from manual). This is the most reliable method.

5. Are your rocker arms direct OEM replacements?
Yes. Our standard replacement rocker arms are precision-engineered to match the original OEM specifications for dimensions, geometry, material, and heat treatment. They are designed as direct bolt-on replacements that integrate seamlessly with your existing camshaft, valves, and adjusters.

6. What are "ratio" rocker arms and their benefit?
The rocker arm ratio (e.g., 1.5:1) is the mechanical leverage it provides.

Stock Ratio: Matches OEM specification.

High-Ratio Performance Rockers (e.g., 1.6:1): Increase the valve lift for a given camshaft lobe. This can improve airflow and engine power without changing the camshaft itself. Must be compatible with piston-to-valve clearance.

7. What are common signs of a failing rocker arm?
Watch for these symptoms:

Loud Ticking/Tapping Noise from the valve cover (excessive valve lash or worn contact surfaces).

Loss of Engine Power or misfires (valves not opening fully due to wear).

Metal Debris in engine oil (from worn surfaces).

Visible Wear: Grooving, pitting, or excessive play on the contact pad, roller, or shaft bore.

8. Do you offer performance or heavy-duty rocker arms?
Yes. For racing, high-mileage, or stressed engines, we offer:

Billet Aluminum Rockers: Extremely lightweight and strong.

Chromoly Steel Rockers: For ultimate strength.

Roller Rocker Upgrades: Converting a sliding system to roller for less friction and heat.

Hardened Tips & Rollers: For extended lifespan under high-RPM use.

9. Can you customize rocker arms (OEM/ODM)?
Absolutely. As a manufacturer, we provide full OEM/ODM services:

Reverse Engineering: From your sample or broken part.

Custom Design & Prototyping: For custom engines or modifications.

Material and Heat Treatment Specification.

Private Labeling & Packaging.

10. What is your MOQ (Minimum Order Quantity)?
Standard Replacement Parts: MOQ 200 pieces (can be mix-and-match across compatible models).

Custom/Performance/OEM Projects: MOQ 500 pieces.

Samples: Available for fitment and quality testing.

11. What is the production lead time?
Samples: 15-20 working days.

Standard Parts: 25-35 working days.

Custom/OEM Production: 40-50 working days after final sample/drawing approval.

12.  How do I request a quotation or technical support?
For the fastest service, please provide:

OEM part number and/or motorcycle details (make, model, year, engine).

Photos/drawings of the required part.

Your target quantity.

Any special requirements (performance, material).

If Anyting Not Clear, Welcome to Contact Us!