Crankshaft Assy

Brand: Mortch Motor
Product Code: MICF0JWA-041000-00020

Product Viewed: 210

Availability: In Stock

Weight: 6.00kg

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CFMoto Crankshaft Assembly

Part Numbers: 0JWA-041000-10010 / 0JWA-041000-10020

Product Type: Engine | Cranktrain

OEM specification crankshaft assembly, the core component of the engine. Suitable for CFMoto 800cc/850cc series ATV models (2V91W-A engine platform). Please select the correct part number based on the mark (A or B) on your crankshaft.

📋 Product Overview

This product is a genuine CFMoto crankshaft assembly, part number 0JWA-041000-10010 (Mark A) or 0JWA-041000-10020 (Mark B). The crankshaft is the core component of the engine, responsible for converting the reciprocating motion of the pistons into rotational motion and delivering power. This crankshaft is forged from high-strength alloy steel, precision-machined and heat-treated for exceptional strength and wear resistance.

⚠️ Important Note: The crankshaft itself is not interchangeable, but connecting rods and plain bearings can be swapped. Please select the correct part number based on the mark (A or B) on your crankshaft, and choose the connecting rod and bearing combination according to the following chart:

Crankshaft A (0JWA-041000-10010):
• With Connecting Rod I → Plain Bearing Black
• With Connecting Rod II → Plain Bearing Blue
Crankshaft B (0JWA-041000-10020):
• With Connecting Rod I → Plain Bearing Red
• With Connecting Rod II → Plain Bearing Black

Specifications:

Overrunning Clutch Side: 20mm / 40mm (21T)
Clutch Carrier Side: 42mm / 40mm (21T)

Product Features:

OEM Part Numbers: 0JWA-041000-10010 (A) / 0JWA-041000-10020 (B)
Product Name: Crankshaft Assembly
Applicable Engine Platform: CFMoto 2V91W-A (800cc/850cc) Series
Material: High-strength Alloy Steel
Compatibility: Direct replacement for OEM crankshaft

🔧 Genuine Quality Assurance: Manufactured strictly according to CFMoto OEM technical standards. Main journal and crankpin dimensional accuracy, surface hardness, and dynamic balance are completely consistent with original parts, ensuring smooth and reliable engine operation.

📐 Specifications

Part Number A:

0JWA-041000-10010

Mark: A

Part Number B:

0JWA-041000-10020

Mark: B

Overrunning Clutch Side:

20mm / 40mm (21T)

Clutch Carrier Side:

42mm / 40mm (21T)

🔧 Connecting Rod and Plain Bearing Selection Guide

Crankshaft Mark	Connecting Rod Type	Bearing Color
A (0JWA-041000-10010)	Connecting Rod I	Black
A (0JWA-041000-10010)	Connecting Rod II	Blue
B (0JWA-041000-10020)	Connecting Rod I	Red
B (0JWA-041000-10020)	Connecting Rod II	Black

📌 Selection Note: The crankshaft itself is not interchangeable, but connecting rods and plain bearings can be swapped. Please select the corresponding connecting rod and bearing combination based on the mark (A or B) on your crankshaft. The correct color bearing must be used to ensure proper bearing clearance during installation.

🔧 Complete Application Model List

🏍️ ATV Models - 2V91W-A Platform

ATV CF800ATR-3 CForce 850XC 2V91W-A
ATV CF800ATR-3(GD) CForce 850XC 2V91W-A
ATV CF800ATR-3(KSR) CForce 850XC 2V91W-A
ATV CF800ATR-3(SS) CForce 850XC 2V91W-A
ATV CF800AU-2A CForce 850XC 2V91W-A
ATV CF800AU-2A(AU) CForce 800XC/CForce 850XC 2V91W-A(AU)
ATV CF800AU-2A(CA) CForce 800XC/CForce 850XC 2V91W-A(CA)
ATV CF800AU-2A(KSR) CForce 800XC/CForce 850XC 2V91W-A
ATV CF800AU-2A(RU) CForce 800XC/CForce 850XC 2V91W-A
ATV CF800AU-2A(US) CForce 850XC 2V91W-A(US)

📌 Applicability Note: This crankshaft assembly is applicable to the CFMoto ATV models listed above equipped with the 2V91W-A engine. Please confirm your model is on the list before purchasing, and check the mark (A or B) on your original crankshaft to select the correct part number. If your specific model is not listed, please contact our customer service with the Vehicle Identification Number (VIN) for confirmation.

✅ Signs that crankshaft needs replacement:
• Severe knocking or abnormal noise from the engine;
• Severe wear or scoring on main journals or crankpins;
• Excessive connecting rod big end clearance, causing knocking;
• Bent or twisted crankshaft;
• During engine overhaul, crankshaft wear exceeds service limits.
If the crankshaft is found damaged or severely worn, replace it promptly to prevent engine failure.

✅ Installation Tip: Crankshaft installation is one of the most critical steps in engine overhaul. Thoroughly clean the crankcase and main bearing saddles before installation. When installing main bearings, ensure bearing cap orientation is correct and tighten main bearing bolts to the specified torque and sequence. After installation, check that the crankshaft rotates smoothly and that axial clearance meets specifications. Must be installed by experienced professional technicians following the service manual.

⚠️ Important Statement: This product is a CFMoto crankshaft assembly, available in two versions: 0JWA-041000-10010 (Mark A) and 0JWA-041000-10020 (Mark B). The crankshaft itself is not interchangeable, but connecting rods and plain bearings can be swapped. Be sure to select the correct part number based on the mark on your original crankshaft, and choose the connecting rod and bearing combination according to the compatibility chart. It is applicable to the CFMoto ATV models listed above equipped with the 2V91W-A engine. Minor differences may exist between different model years or production batches. If your specific model is not listed, please contact our customer service with the Vehicle Identification Number (VIN) to confirm compatibility. Images are for reference only; actual product may vary.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.